grid code supervisory committee...engr. khalid huzaifa al-nafey engr. rasheed mohammad al-shubaili...

ANNUAL REPORT 2011

Activities and

Accomplishments

Grid Code Supervisory Committee

GCSC

ANNUAL REPORT 2011

GCSC

ANNUAL REPORT 2011

GCSC

Table of Contents

1. Message from the Chairman ..................................................................... 1

2. Establishment ............................................................................................ 3

3. A Pictorial Introduction to the GCSC Team ............................................... 4

4. GCSC Function ......................................................................................... 5

5. Highlights of Activities, Performance and Achievements ........................... 6

6. Business Meetings Over the Years ......................................................... 11

7. Salient Features of 2012 Action Plan ...................................................... 13

8. Captured Moments During this Year's Meetings ..................................... 14

9. Annexure ................................................................................................. 17

Schedule A: Record of Amendments

Schedule B: Record of Derogation

Schedule C: Recommendation sent to ECRA

Schedule D: ECRA’s Decision on the Recommendations

Schedule E: Minutes of GCSC’s Meetings

ANNUAL REPORT 2011

1

GCSC

A Message from the Chairman

Congratulations GCSC for another year well done.

It has been another fruitful year for the GCSC and it is noteworthy to mention the

excellent efforts made by our distinguished Committee Members and the Secretariat

as well. Through the detailed discussions on the proposals submitted before us, we

were able to process and recommend to ECRA the numerous derogations requested

by the existing generators as well as some amendments in the SAGC. I, therefore,

thank all the members of the GCSC for their untiring efforts in sharing their knowledge

and expertise for the betterment of the Kingdom's Electricity Industry.

Moving forward to our 5th year of efficient operation, we need to be strongly

determined to continuously face the enormous challenges ahead, welcoming new

policies, directives, and strategies coming from our competent government and

regulatory authorities. Such may include new policies and programs to encourage the

private sector to facilitate the development of new technologies and renewable

energy sources within the Kingdom. I believe that we cannot ignore the fact that these

new technologies e.g. nuclear; and the renewable energies such as solar and wind are

now being lined up to contribute to our generation mix in the near future.

I, therefore, ask all of you to constantly deliver and give your best to enhance the

operation of our humble Committee. All of us must continue to study and seek

appropriate changes to our SAGC to further improve and enhance its implementation.

SAGC is not cast in stone. As what other prominent countries have been doing with

respect to their Grid Codes, amendments must also be done to our SAGC, whenever

ANNUAL REPORT 2011

2

GCSC

necessary. Provide as much technical proof as needed to support any request for

amendment or derogation. For the last 5 years that the SAGC has been in existence,

we already have a handful of amendments that have gained approval of ECRA. With

this, I believe that it is now timely that we should work on the issuance of the first

revision of the SAGC.

Year 2012 will be a more exciting and challenging year for us. As all of you may be

aware, the preparation towards the unbundling of the Generation, Transmission, and

Distribution sectors of SEC are ongoing. The setting-up of the Kingdom's National

Control Center is also ongoing to ensure smooth flow and transfer of electricity among

the different operating areas (e.g. Central, East, South, and West). On another note,

we are also hoping that the initial set of guidelines for the monitoring of the effective

implementation of the SAGC will be completed and approved for implementation,

Insha Allah.

With the ongoing restructuring of our electricity industry, there will be more

challenges to be expected especially when the time comes that the Market Code has

been finalized, approved, and ready for implementation.

With this, I am looking forward for more active participation and support from the

members as we face more challenges this 2012. Again, thank you and more power.

Hamed A. Al-Saggaf

Chairman, GCSC

ANNUAL REPORT 2011

Establishment 3

GCSC

1. Establishment

The Grid Code Supervisory Committee (GCSC) was established as per the ECRA

Governor's decision number 12\429 dated 4\3\2008. The GCSC was established to

assist the TSP in ensuring effective implementation of the SAGC. In addition, the

GCSC will help to ensure fair, economical, and transparent connection to, and

operation of the grid, as well as to contribute in the development of a competitive

power market in the Kingdom. It is worth to note here that National Grid has already

been created within SEC to perform the transmission function of the Saudi Electricity

Company.

Table 1: Components of the Grid Code Supervisory Committee

Representation

Category

Component Stakeholder Entity

Chairman Member

Transmission

1 2

1

Regulator 1

Generation

(More than 500 MW)

1

1

Generation

(Less than 500 MW) 1

Distribution

2

1

1

Directly Connected Customers

1

ANNUAL REPORT 2011

A Pictorial Introduction to the GCSC Team 4

GCSC

2. A Pictorial Introduction to the GCSC Team

Engr. Hamed A Al-Saggaf

Engr. Fayez Gaith

Al-Jabri

Dr. Abdullah Muhammad Al-

Abbas

Chairman, SEC Regulator, ECRA Generation, SEC

Engr. Ahmed Yaqoub Al-Furaih

Dr. Mahmoud Bahi El-Din Zayan Engr. Nezar M Saeed Al-Khanaizi

Generation, SWCC Generation, ARAMCO Transmission, SEC

Engr. Mohammad Y Al-ZahraniEngr. Salman Atiya Al-Zahrani

Engr. Mohammad Y. Al-Taher

Transmission, SEC Transmission, MARAFIQ Distribution, SEC

Engr. Fouad M. Al-

AbdulqaderEngr. Saleh Al-Amri

Engr. Khalid Huzaifa

Al-Nafey

Engr. Rasheed

Mohammad Al-Shubaili

Distribution, SEC Distribution, ARAMCO Distribution, MARAFIQ DCC, SABIC

ANNUAL REPORT 2011

GCSC Function 5

GCSC

3. GCSC Function

Keep the SAGC and its working under review

Review and recommend amendments to SAGC

Guide on Code's implementation & interpretation

Consider changes to deal with unforeseen issues

Review and recommend on derogation requests

ANNUAL REPORT 2011

Highlights of Activities, Performance and Achievements 6

GCSC

4. Highlights of Activities, Performance and Achievements

1. Updating of Web Portals

The information provided in both the SAGC and the Committee Web Portals

were updated as follows: (i) recent status of Members' information; (ii) Minutes

of the Meetings; (iii) Annual Reports; (iv) GCSC's recommendations on

amendment and derogation requests; and (v) ECRA's decisions.

2. Sub-committee formed to review SEC's derogation requests

The GCSC formed a sub-committee to study the technical justifications found in

derogation requests package 09D05-09D074 submitted by SEC-Generation of

Western region. This sub-committee consisted of members from the Generation

and SEC’s Transmission Operation.

The sub-committee coordinated with the different manufacturers of generating

units to inquire about the capabilities of these units requesting for derogations

as well as to receive some technical inputs regarding the actual performance

relating to the compliance with the requirements of the Code on voltage and

frequency limits. The sub-committee also conducted a couple of meetings to

discuss the responses of manufacturers and to share the views of other

members as well.

The sub-committee informed the GCSC of the correspondences to

manufacturers and their responses regarding under frequency and overvoltage

cases. In addition, the sub-committee determined that sections 2.5.5.2 and

2.5.5.8 of the SAGC clearly stipulate that a proportionate decrease in active

power of the generating unit is allowed as a consequence of deviation of the

frequency to operate within the required frequency range. As a result, the GCSC

voted on the set of derogation requests.

ANNUAL REPORT 2011


GCSC

3. Forming of a Sub-Committee tasked to monitor Users Compliance with the

Code

The Chairman directed to form a Technical Sub-Committee composing of two

members from the Transmission Operation and one from ECRA that would be

responsible for the monitoring of the Compliance of Users with the SAGC. The

member from ECRA was designated by the Chairman to head this

subcommittee. The GCSC has then agreed to add a fix agenda item to discuss

relevant examples pertaining to users' compliance with the Code.

The Committee stated that the GCSC is required to guide the Users with respect

to the implementation of the Code. However, the TSP should monitor the

compliance with the Code as stated in the Implementing Regulations of the

Electricity Law, Condition 11.1.11.

4. Amendment Requests recommended by the Committee for approval of ECRA

On the processing of Amendment Requests, the Committee has recommended

two (2) requests for amendments pertaining to "Schedule Day" and "Alerts"

having Amendment Nos. 11A030 and 11A031, respectively, in order for the

SAGC to become consistent with the Interconnection Transmission Code of the

Gulf Cooperation Council Interconnection Authority. Please see the attached

Schedule C of the Annexure for complete details.

5. Granting a set of derogations submitted by SEC Generation‎ - Western

Operating Area- regarding frequency variation of generating unit

The Committee has granted approval on a set of Derogation for Alstom (ABB)

units as follow: Units are to be derogated for the lower limit 57.5 Hz for 30

minutes and the lower limit 57.0 Hz for 30 seconds, pertaining to clause 2.4.2. of

the SAGC. The details of the approval were as follows:

ANNUAL REPORT 2011


GCSC

No. Particular SAGC Requirement Derogation granted

1 Frequency Variations

57.5 to 58.7 Hz. for a period of 30 minutes

57.6 to 58.7 Hz. for a period of 30 minutes

2 57 to 57.4 Hz. for a

period of 30 seconds 57 to 57.5 Hz. for a period

of 5 seconds

The detailed proposal with the corresponding approval is provided in Schedule C

of the Annexure for complete details.

6. Derogation Requests approved by the Committee pertaining to Voltage

Variations

On the processing of derogation requests regarding Voltage Variations, three (3)

requests have been approved for ABB GT Units and two (2) for GE Gas Turbine

units. Said units are to be derogated for 15 years for operating on the upper

limit +10% on 30 minutes as follows: (i) 09D041 for Makkah Power Plant - Type

11D5 GT Nos. 8 to 12; (ii) 09D053 for Madinah PP1, Type 9C GT No. 3; (iii)

09D056 for Madinah PP2, Type 9D GT Nos. 1, 2 & 5; (iv) 09D045 Makkah Power

Plant - GE Gas Turbines, Frame 7B GT Nos. 4 to 7; and (v) 09D049 for Makkah

Power Plant - GE Gas Turbines, Frame 7E GT Nos. 13 to 18. Please see the

attached Schedule C of the Annexure for complete details.

7. ECRA's Approval on the Proposed Amendments to the SAGC

The GCSC has received the approval of the Board of ECRA pertaining to the

various amendments to be included in the new publication of the Code. The

GCSC has discussed in its 12’th meeting, the mechanism of the inclusions of the

approved amendments, since 5 years has already passed after the issuance of

the Grid Code. The committee then decided to issue the subsequent revisions of

the code every 5 years. Hence, the next version is expected to be issued on July

2012. Details of said approvals are attached under Schedule D of the Annexure.

ANNUAL REPORT 2011


GCSC

8. Updating the Registry of Amendment and Derogation requests

The committee discussed and processed twenty-four requests for amendment

to the SAGC, and sixty derogation requests from the SAGC during its regular

meetings since 2008. The committee clarified among its members the difference

between the amendment requests and derogation requests, and the conditions

when to ask for such request. Shown in the figure below are the steps for

processing amendments and derogation requests.

Figure 1: Steps for processing amendments and derogation requests

As shown in the above diagram, the GCSC will consider the amendment or

derogation request, and submit its recommendations to ECRA for a ‎final

decision. ECRA will take decision after considering the proposal and

‎recommendation from the GCSC and will inform the GCSC about its decision.

The ‎GCSC will then inform the initiator whether his request has been accepted

or not. ‎For amendment proposals, the GCSC will keep a record of all approved

amendments ‎to be incorporated in the next revision of the SAGC. While for

Proposal Prepared

Submitted to GCSC

GCSC consults experts

GCSC finalizes its review

GCSC recommends to

ECRA

ECRA condisers and decides

ECRA informs GCSC

GCSC informs the initiator

GCSC takes action

ANNUAL REPORT 2011


GCSC

derogation ‎proposals, if a user’s proposal is rejected, he shall comply with the

existing ‎provisions of the Code. If his proposal is accepted or modified then this

user ‎will not be required to comply with the relevant provision(s) of the SAGC

but will ‎instead comply with any alternate provision(s) mentioned in the

derogation.

Chart 1: Statistics of the status of Amendment and Derogation Requests

So far, the GCSC has received 44 Amendments Requests classified as follows:

Requests discussed: 24

Withdrawn and re-submitted as derogation requests: 4

Clarification sought for: 1

Suspended as per proposer's request: 20

Agreed and recommended to ECRA: 8

Refuted with appropriate justifications: 11

Approved by ECRA: 5

In addition, the GCSC has received 74 requests for derogation, from provisions of

the SAGC, classified as follows:

44

74

24

68

8

18

58

0

10

20

30

40

50

60

70

80

Amendments Derogations

Received

Discussed

Recommended

Approved

ANNUAL REPORT 2011

Business Meetings Over the Years 11

GCSC

Requests discussed: 68

Withdrawn by the proposer: 45

Agreed and recommended to ECRA: 18

Granted by ECRA: 8

5. Business Meetings Over the Years

Statistics of GCSC Meetings

Event Date Attendees Venue Sponsor

1st Meeting 23/03/2008

Members:12

Guests:1

Absent:1

Riyadh -

ECRA office

2nd Meeting 05/05\2008

Members:10

Alternates:2

Guest:1

Absents:3

Riyadh -

Sheraton

Hotel

3rd Meeting 21/10/2008

Members:12

Guests:5

Absent:1

Riyadh -

Sabic HQ.

4th Meeting 19/01/2009

Members:11

Alternates:2

Guests:3

Absents:2

Dhahran -

Aramco R&D

Center


Members:11

Alternates:2

Guests:2

Absents:2

Yanbu -

Holiday Inn

Hotel


Members:13

Alternate1:1

Guests:4

Absent:1

Al-Khobar -

Golden Tulip


Members:12

Alternates:2

Guests:2

Absents:2

Riyadh -

Marriot Hotel


Members:10

Alternates:3

Guests:2

Absents:4

Jeddah -

Hilton Hotel


Members:12

Alternate:1

Guests:4

Absents:2

Al- Khobar -

Holiday Inn

Hotel

ANNUAL REPORT 2011

Business Meetings Over the Years 12

GCSC

Event Date Attendees Venue Sponsor

10th

Meeting 30/10/2010

Members:11

Alternates:2

Guest:1

Absents2:

Al- Khobar -

Holiday Inn

Hotel

11th

Meeting 16/2/2011

Members:13

Alternates:

Guest:5

Absents:

Madinah –

Movenpick Hotel

12th

Meeting 24/5/2011

Members:10

Alternates:3

Guest:2

Absents:

Al- Khobar -

Coral

International

Hotel

13th

Meeting 21/9/2011

Members:6

Alternates:6

Guest:1

Absents:7

Riyadh –

Madareem

Crown Hotel

ANNUAL REPORT 2011

Salient Features of 2012 Action Plan 13

GCSC

6. Salient Features of 2012 Action Plan

SALIENT FEATURES OF 2012 ACTION PLAN

ecommend proposals to amend SAGC for the handlingand treatment of New Technologies and RenewableEnergy Sources in the Grid.

xplore the possible amendments that must be included in the SAGC with regard to the functions and obligations of the Single Buyer.

acilitate improvement, by providing necessary recommendations, on the performance of the Grid Users pertaining to their compliance with the pertinent provisions of the SAGC.

rganize workshops for the industry stakeholders with regard to the important technical aspects of the Code as well as on the amendments recently approved by the Board of ECRA.

equire the entities that have been granted derogations by ECRA to prepare and submit reports, as may be necessary, with respect to its continued need and the details of actions being done to restore compliance with the SAGC.

onitor and quickly respond to any important and relevant issues pertaining to the restructuring of the Kingdom's Electricity Industry including matters such as on the developments with respect to the crafting of the Market Code.

ANNUAL REPORT 2011

Captured Moments During this Year's Meetings 14

GCSC

7. Captured Moments During this Year's Meetings

11th GCSC Meeting at Movenpick Hotel, Madinah on February 16, 2011

ANNUAL REPORT 2011


GCSC

12th GCSC Meeting at Coral International Hotel, Al-Khobar on May 24, 2011

ANNUAL REPORT 2011


GCSC

13th GCSC Meeting held at Madareem Crown Hotel, Riyadh on September 21, 2011

ANNUAL REPORT 2011

Annexure 17

GCSC

8. Annexure


Schedule B: Record of Derogations ‎

Schedule C: Recommendations sent to ECRA

Schedule D: ECRA’s Decisions on the Recommendations

Schedule E: Minutes of ‎GCSC's Meetings

ANNUAL REPORT 2011

GCSC


ANNUAL REPORT 2011


GCSCSr. No.

Amendment Registration

No.

Date of Submission

Submitted by SAGC Clause(s)

No. Summary of the

Request GCSC

Recommendation(s)

Date Submitted

to ECRA

ECRA's Decision

Action Taken /

Required Status

1 08A001 25-Aug-08 Aramco-

Distribution

1 Include definition of captive cogeneration as defined by ECRA

Not recommended __ __ None Completed at the 3

rd GCSC

Meeting

1.16.1

Revise to state that in the event of conflict

between the Grid Code and agreements

between a User and the TSP or ECRA, the

agreement shall govern.

Not recommended __ __ None

Discussed and withdrawn by proposer at the 3

rd GCSC

Meeting

3.3.1.2

Revise to give the users the right to review the requirements for users

to modify or install new plants or

apparatus

Not recommended __ __ None

Discussed and withdrawn by proposer at the 3

rd GCSC

Meeting

2 08A002 15-Sep-08 SEC - Generation 2.4.2 Frequency

Variations

The frequency shall be revised and minimum

frequency for all generators shall not go

below 58.2 Hz

To be discussed later __ __ __ Postponed

3 08A003 15-Sep-08 SEC - Generation 2.4.3 Voltage

Variations

The voltage settings shall be revised to +8%

for all the GT generators in power

plants.

To be discussed later __ __ __ Postponed

4 08A004 15-Sep-08 SEC - Generation 2.5.1.1 and

2.5.2.9

Remove contradiction for specifying

connection points Not recommended __ __ None

Completed at the 3

rd GCSC

Meeting

5 08A005 15-Sep-08 SEC - Generation 2.5.2.14 (i)

The TSP should not be the final deciding

authority in case of disputes


th GCSC

Meeting

ANNUAL REPORT 2011


GCSCSr. No.


No.

Date of Submission


No. Summary of the

Request GCSC

Recommendation(s)

Date Submitted

to ECRA

ECRA's Decision

Action Taken /

Required Status

6 08A006 15-Sep-08 SEC - Generation 2.7.7.1 The TSP shall follow

the user safety rules in all cases.


th GCSC

Meeting

7 08A007 15-Sep-08 Aramco-

Generation

2.3.1.10 (proposed new

section)

Establishing a queue system for

interconnection requests


th GCSC

Meeting

8 08A008 15-Sep-08 Aramco-

Generation 2.3.2

TSP should have separate and standardized

documents to deal with interconnection

requests


th GCSC

Meeting

9 08A009 15-Sep-08 Aramco-

Generation 2.3.2.6

Delete whole paragraph and replace with the suggested text


th GCSC

Meeting

10 08A010 15-Sep-08 Aramco-

Generation 2.3.4.2 Delete item (i) Not recommended __ __ None

Completed at the 4

th GCSC

Meeting

11 08A011 15-Sep-08 Aramco-

Generation 2.3.4.3 Delete item (ii) Not recommended __ __ None

Completed at the 4

th GCSC

Meeting

12 08A012 15-Sep-08 SEC- Generation 4.9.7.10

Modify the period required to

synchronize fast start capability of the units


th GCSC

Meeting

13 08A013 15-Sep-08 SEC- Generation 7.7

Flexibility shall be made in the codes for metering data storage

requirements

For withdrawal since it should be

submitted as derogation request

__ __ None

To be withdrawn as agreed during

5th

GCSC Meeting

14 08A014 15-Sep-08 SEC- Generation 7.9 Flexibility shall be

made in the codes for testing of metering



__ __ None


5th

GCSC

ANNUAL REPORT 2011


GCSCSr. No.


No.

Date of Submission


No. Summary of the

Request GCSC

Recommendation(s)

Date Submitted

to ECRA

ECRA's Decision

Action Taken /

Required Status

Meeting


Flexibility shall be made in the codes for

main and check metering



__ __ None


5th

GCSC Meeting


Flexibility shall be made in the codes for

time keeping requirements till the installation of new

digital meters



__ __ None


5th

GCSC Meeting

17 08A017 15-Sep-08 Aramco-

Generation 2.3

This section should detail the steps and

procedures for requesting

interconnections‎‎

For postponement by the proposer

__ __ __

Postponed as agreed during

5th

GCSC Meeting

18 08A018 15-Sep-08 Aramco-

Generation 2.3.1.2

Suggested rephrasing is proposed :‎“The User

has to specify in the appropriate application

form the date of intended

Interconnection to the ‎grid. The TSP may

specify in the Connection Agreement a minimum timeframe from the date of User’s ‎application before the User can be connected

to the grid.”‎


__ __ __


5th

GCSC Meeting

ANNUAL REPORT 2011


GCSCSr. No.


No.

Date of Submission


No. Summary of the

Request GCSC

Recommendation(s)

Date Submitted

to ECRA

ECRA's Decision

Action Taken /

Required Status

19 08A019 15-Sep-08 Aramco-

Generation 2.3.1.3

Add following phrase at the end of the

second sentence: “, and other subsequent studies, if warranted.”


__ __ __


5th

GCSC Meeting

20 08A020 15-Sep-08 Aramco-

Generation 2.3.1.7 Delete entire section


__ __ __


5th

GCSC Meeting

21 08A021 15-Sep-08 Aramco-

Generation 2.3.2.3

Should specify those conditions that require more detailed studies.


__ __ __


5th

GCSC Meeting

22 09A022 29-Apr-09 GCSC Members 1.10.5

The Regulator shall provide administrative and logistic support to

the GCSC

For recommendation to ECRA as agreed

during 6th

GCSC Meeting

12-Jul-09 Not

approved None

Settled at the 7

th GCSC

Meeting

23 09A023 16-May-09 Aramco-

Distribution 5.3.6

Adding a new clause after the clause 5.3.6.2 to state that the TSP

will give priority in dispatch for

cogeneration plants


during 6th

GCSC Meeting

12-Jul-09 Approved

To be added in the next

revision of the Code

Ongoing inclusion in

the first revision of the

SAGC

24 09A024 16-May-09 Aramco-

Distribution 7.7.5

Specify the confidential data and the data to be disclosed to the public


during 6th

GCSC Meeting

__ __ __ Discussed at the 6

th GCSC

Meeting

25 09A025 4-Nov-09 SEC- Transmission 3.3.5 Update status of

developing Planning Criteria


during 7th

GCSC Meeting

13-Dec-09 Approved





SAGC

ANNUAL REPORT 2011


GCSCSr. No.


No.

Date of Submission


No. Summary of the

Request GCSC

Recommendation(s)

Date Submitted

to ECRA

ECRA's Decision

Action Taken /

Required Status

26 09A026 26-Oct-09 SEC- Transmission 7.12 Four suggested

modifications to be added to the section


during 7th

GCSC Meeting

__ __ __

Modified as shown in request 09A027-

09A029 as discussed at the 7

th GCSC

Meeting

27 09A027 4-Nov-09 SEC- Transmission 7.12

Modify sub-clause 7.12.2 to refer to the

TSP standard 01-TMSS-01


during 7th

GCSC Meeting

13-Dec-09 Approved





SAGC


Add new clauses under 7.12 to provide general description of metering

equipment seals


during 7th

GCSC Meeting

13-Dec-09 Approved





SAGC


Inserting a new section to specify how to deal

with damaging or tampering with

metering equipment


during 7th

GCSC Meeting

13-Dec-09 Approved





SAGC

30 11A030 10-Sep-11 SEC- Transmission 5.3.1.2 changing the start of

the Schedule Day from 06:00 hrs to 00:00 hrs

For recommendation to ECRA as agreed during 13

th GCSC

Meeting

28 Dec-11 - Awaiting for ECRA approval

Submitted to ECRA

31 11A031 10-Sep-11 SEC- Transmission 4.5.5; 4.5.5.1-

4.5.5.3;and 4.7.4.1

Changing colors of alerts/ warning system to match the one for

the GCC Code

For recommendation to ECRA as agreed during 13

th GCSC

Meeting

28 Dec-11 - Awaiting for ECRA approval

Submitted to ECRA

ANNUAL REPORT 2011

GCSC

Schedule B: Record of Derogation

ANNUAL REPORT 2011

GCSC

Sr. No.

Derogation Registration

No.

Date of Submission

Submitted by

SAGC Clause(s) No.

Summary of the Request

GCSC Recommendation(s) Date

Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status

1 08D001 25-Aug-08 Saudi

Aramco - Distribution

4.9.7 and 4.3.4.12

Various subsections out of Chapter 4 ( Operating

Code) hinder Saudi Aramco from operating

and maintaining its cogeneration units

including the 3rd party in ‎the most optimal way

ECRA granted these derogations and others as annexed with the Captive

Co-generation Licence granted for Saudi Aramco.

So that, no need to recommend it to ECRA.

__ __ __ Settled at the

3rd

GCSC Meeting

2 08D002 15-Sep-08 SEC - West Generation

2.4.2 Frequency Variations

Frequency variations requirements is not

applicable to the most of generating units

The request needs to be modified by specifying the units to be derogated. The request should specify the

frequencies those could not be complied, and include the support documents

from manufacturer.

__ __ __

Proposer prepared the

detailed requests for the required units

as shown in received

derogation package

09D005-09D074


2.4.3 Voltage Variations

10% Over-Voltage limits not possible for most of

the GE Units

The request is to be modified by specifying the units to be derogated, and

include the support documents from

manufacturer.

__ __ __




derogation package

09D005-09D074

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status


2.5.2 Protection

Equipment/ Schemes (2.5.2.7, 2.5.2.11)

Backup protection and Pole Slip protection are

not available for most of the generators

The proposer should specify units to be derogated, and prepare a plan to comply with backup protection requirement. Pole Slip

protection is not required from all units as mentioned in the Code. TSP will decide whenever it is required in the relevant Connection

Agreement

__ __ __




derogation package

09D005-09D074

5 09D005 21-Apr-09 SEC - West Generation


Rabigh Power Plant- MHI Steam turbine, Stage1

Steam# 1-4 can achieve 10% over-voltage limits

for2 minutes only. Derogation is asked for

15 years

Discussed at the 8th

GCSC Meeting. GCSC to consider

applying derogation granted in the letter 020/11

__ __ __ To be discussed

in the next meeting


2.5.2 Protection

Equipment/ Schemes (2.5.2.7)

Backup protection is not available at Rabigh

Power Plant- MHI Steam turbine, Stage1Steam#

1-4, and need to be installed in all the power

plants. Derogations sought for 5years.

No need for derogation, since the user's system

fulfill the SAGC requirement as discussed at the 8

th GCSC

Meeting. The request is withdrawn by the proposer.

__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status



Rabigh Power Plant- MHI Steam turbine, Stage III Steam# 5-6 can achieve 10% over-voltage limits

for2 minutes only. Derogation is asked for

15 years





in the next meeting


2.5.2 Protection



Power Plant- MHI Steam turbine, Stage III Steam#

5-6, and need to be installed in all the power

plants. Derogations sought for 5years.


fulfill the SAGC requirement as discussed in the 8th MoM. The request is

withdrawn by the proposer.

__ __ __ Withdrawn



Rabigh Power Plant- ABB Gas-turbine, Type-11D5

GT#1-8 can not withstand the dielectric

and thermal stresses due to 10% over-voltage for

long period. The generation can con

guarantee the operation of the units on 10% over-voltage for 30 minutes.

Derogation





in the next meeting

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status


2.5.2 Protection



Power Plant- ABB Gas-turbine, Type-11D5

GT#1-8, and need to be installed in all the power

plants. Derogation is sought for 5years.



th GCSC


__ __ __ Withdrawn


2.5.5.12 On Load Tap changer

Rabigh Power Plant- ABB Gas-turbine, Type-11D5

GT#1-8, step up transformers as installed

have off load tap changer. Derogation is required for 15 years

Committee accepted the derogation after modifying

‎the period required for derogation from 15 years to

the ‎date of transformer's replacement.‎

The Acceptance is concurred by a majority of votes (12 ‎out of 13 votes).

Against (G2).‎

Letter # 016\10 dated

23/8/2010

Approved

Proposer informed by letter #017\10

Derogation Granted



Rabigh Power Plant- ABB Combined Cycle units, Stage II CC1-2 can not

withstand the dielectric and thermal stresses due to 10% over-voltage for long period. Derogation

is asked for 15 years from the operation of the units on 10% over-

voltage.


GCSC Meeting. GCSC is to consider applying

derogation granted in the letter 020/11


in the next meeting

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status


2.5.2 Protection


Backup protection is not available at Rabigh Power Plant- ABB

Combined Cycle units, Stage II CC1-2, and need to be installed in all the

power plants. Derogation is sought for

5years.



th GCSC


__ __ __ Withdrawn



Rabigh Power Plant- ABB Combined Cycle units, Stage II CC1-2, step up

transformers as installed have off load tap

changer. Derogation is required for 15 years





Against (G2).‎


23/8/2010

Approved


Derogation Granted



Rabigh Power Plant- GE Gas Turbines, Frame 7EA GT#9-12, is designed to operate under 57-60.6

Hz. Derogation is required for 15 years from operating under

60.6-62.5 Hz.

No need for derogation from over frequency.

Request is withdrawn by the Committee as discussed

at the 8th and 9th

GCSC Meeting since there is no protection in the unit for

over frequency

__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status



Rabigh Power Plant- GE Gas Turbines, Frame 7EA

GT#9-12 can not withstand the operation under 10% over-voltage

for 30 minute. Derogation is asked for

15 years.





in the next meeting


2.5.2 Protection



Power Plant- GE Combined Cycle-unit,

Stage-IV CC3, and need to be installed in all the

power plants. Derogation is sought for

5years.



th GCSC


__ __ __ Withdrawn



Rabigh Power Plant- GE Combined Cycle-unit, Stage-IV CC3 can not

withstand the operation under 10% over-voltage

for 30 minute. Derogation is asked for

15 years.

Discussed in the 8th




in the next meeting


2.5.2 Protection



Power Plant- GE Gas Turbines, Frame 7EA

GT#9-12, and need to be installed in all the power

plants. Derogation is sought for 5years.



th GCSC


__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status



Jeddah PP3 - GE Gas Turbines, Model 7B

GT#1-11, is designed to operate under 57-60.6


60.6-62.5 Hz.



at the 9th

GCSC Meeting since there is no protection

in the unit for over frequency

__ __ __ Withdrawn




GT#1-11, can not withstand 10% over

voltage. Derogation is required for 15 years.

The request is to be withdrawn as

recommended at the 13th

GCSC Meeting, since all units under the request

have On-Load Tap Changer

__ __ __ Withdrawn


2.5.2 Protection



GT#1-11, do not have backup protection which is needed to be installled in all the power plants. Derogation is required

for 5 years.



th GCSC


__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status



Jeddah PP3 - ABB Gas Turbines, Type 11D5-

GT#12-27, is designed to operate over 57.6 Hz. Derogation is required

for 15 years from operating under 57.6 Hz.

Recommended at the 12th

GCSC Meeting to grant

derogation for Alstom (ABB) units as follow: Units are to be derogated from under

frequency limits of the range 30 minutes to be

57.6Hz instead of 57.5 Hz; the frequencies above

57.1Hz to 57.6Hz will be required for 30 seconds as

stated in the SAGC; the lower limit 57.0 Hz will be

required for 5 seconds period instead of 30

seconds.

__ __ to be

submitted to ECRA

Ongoing preparation of the documents for submission

to ECRA



Jeddah PP3 - ABB Gas Turbines, Type 11D5 GT#12 to 27, can not withstand 10% over






__ __ __ Withdrawn


2.5.2 Protection


Jeddah PP3 - ABB Gas Turbines, Type 11D5

GT#12 to27, do not have backup protection which is needed to be installed in all the power plants. Derogation is required

for 5 years.



th GCSC


__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status



Jeddah PP3 - GE Gas Turbines, Frame 7EA

GT#28-35, require derogation is for 15

years from operating on 57 Hz for 30sec.

Awaiting proposer clarification since there is no need for derogation from over frequency.

__ __ __

Discussed at the 13

th GCSC

Meeting. Awaiting proposer

clarification



Jeddah PP3 - GE Gas Turbines, Frame 7EA




recommended in the 13th



__ __ __ Withdrawn



Jeddah PP2 - GE Gas Turbines, Frame 5 GT#4, is designed to operate

under 57-60.6 Hz. Derogation is required

for 15 years from operating under 60.6-

62.5 Hz.



at the 9th



__ __ __ Withdrawn



Jeddah PP2 - GE Gas Turbines, Frame 5 GT#4, can not withstand 10%

over voltage. Derogation is required for 15 years.


recommended in the 13th meeting, since all units

under the request have On-Load Tap Changer

__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status


2.5.2 Protection


Jeddah PP2 - GE Gas Turbines, Model 5 GT#4,

do not have backup protection which is

needed to be installed in all the power plants.

Derogation is required for 5 years.


fulfill the SAGC requirement as discussed in the 9th MoM. The request is

withdrawn by the proposer.

__ __ __ Withdrawn



Jeddah PP2 - ABB Gas Turbines, Type 11B

GT#7,8 &10, require derogation from

operating under 57.6 Hz. Derogation is required

for 15 years



derogation for Alstom (ABB) units as follows: Units are to be derogated for the lower limit 57.5 Hz for 30 minutes

to be 57.6Hz for 30 minutes; Units are to be derogated for only the

lower limit 57.0 Hz to be for 5 seconds period instead of 30 seconds, the frequencies above 57.1Hz to 57.6Hz will be for 30 seconds as stated

in the SAGC.

__ __ to be

submitted to ECRA


to ECRA




GT#7,8 &10, can not withstand 10% over






__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status


2.5.2 Protection



GT#7,8 &10, do not have backup protection which is needed to be installed in all the power plants. Derogation is required

for 5 years.



th GCSC


__ __ __ Withdrawn



Makkah Power Plant - ABB Gas Turbines, Type 9C GT#7.8 &10, require

derogation from operating under 57.6 Hz.

Derogation is required for 15 years






in the SAGC.

__ __ to be

submitted to ECRA


to ECRA



Makkah Power Plant - ABB Gas Turbines, Type

9C GT#1, can not withstand 10% over






__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status


2.5.2 Protection


Makkah PP - ABB Gas Turbines, Type 9C GT#1,






th GCSC


__ __ __ Withdrawn




9D GT#2 & 3, require derogation from

operating under 57.6 Hz. Derogation is required

for 15 years






in the SAGC.

__ __ to be

submitted to ECRA


to ECRA




9D GT#2 &3, can not withstand 10% over






__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status


2.5.2 Protection


Makkah PP - ABB Gas Turbines, Type 9D GT#2-

3, do not have backup protection which is





th GCSC


__ __ __ Withdrawn




11D5 GT#8 to 12, require derogation from operating under 57.6 Hz.

Derogation is required for 15 years






in the SAGC.

__ __ to be

submitted to ECRA


to ECRA




11D5 GT#8 to 12, cannot withstand 10% over


As per manufacturer feedback, Committee


GCSC Meeting to grant the requested derogation since the units have off load tap

changer

__ __ to be

submitted to ECRA


to ECRA

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status


2.5.2 Protection


Makkah PP - ABB Gas Turbines, Type 11D5


for 5 years.



th GCSC


__ __ __ Withdrawn



Makkah PP - ABB Gas turbine, 11D5, GT#8 to

12 step up transformers as installed have off load tap changer. Derogation is required for 15 years





Against (G2).‎


23/8/2010

Approved


Derogation Granted



Makkah PP - GE Gas Turbines, Frame 7B GT#4

to7, is designed to operate under 57-60.6


60.6-62.5 Hz.



at the 9th



__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status



Makkah Power Plant - GE Gas Turbines, Frame

7B GT#4 to 7, can not withstand 10% over


Committee recommended at the 13

th GCSC Meeting to

grant the requested derogation since the units have off load tap changer

__ __ to be

submitted to ECRA


to ECRA


2.5.2 Protection


Makkah PP - GE Gas Turbines, Frame 7B


for 15 years.



th GCSC


__ __ __ Withdrawn



Makkah PP - GE Gas turbine, Frame 7B, GT#4

to7 step up transformers as installed






Against (G2).‎


23/8/2010

Approved


Derogation Granted

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status



Makkah PP - GE Gas Turbines, Frame 7E

GT#13 to18, is designed to operate under 57-

60.6 Hz. Derogation is required for 15 years from operating under

60.6-62.5 Hz.



at the 9th



__ __ __ Withdrawn



Makkah Power Plant - GE Gas Turbines, Frame 7E GT#13 to 18, can not

withstand 10% over voltage. Derogation is required for 15 years.

Committee recommended in the 13th meeting to grant

the requested derogation since the units have off load

tap changer

__ __ to be

submitted to ECRA


to ECRA


2.5.2 Protection


Makkah PP - GE Gas Turbines, Frame 7E


for 5 years.



th GCSC


__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status



Makkah PP - GE Gas turbine, Frame 7E,

GT#13 to16 step up transformers as installed






Against (G2).‎


23/8/2010

Approved


Derogation Granted



Makkah PP - GE Gas turbine, Frame 7E,

GT#17 &18 step up transformers as installed






Against (G2).‎


23/8/2010

Approved


Derogation Granted



Madinah PP1 - ABB Gas Turbines, Type 9C GT#3, can not withstand 10%

over voltage. Derogation is required for 15 years.




changer

__ __ to be

submitted to ECRA


to ECRA

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status


2.5.2 Protection


Madinah PP1 - ABB Gas Turbines, Type 9C GT#3,






th GCSC


__ __ __ Withdrawn



Madinah PP1 - ABB Gas turbine, Type 9C, GT#3 step up transformers as installed have off load

tap changer. Derogation is required for 15 years





Against (G2).‎


23/8/2010

Approved


Derogation Granted



Madinah PP2 - ABB Gas Turbines, Type 9D

GT#1,2 &5, can not withstand 10% over





changer

__ __ to be

submitted to ECRA


to ECRA

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status


2.5.2 Protection


Madinah PP2 - ABB Gas Turbines, Type 9D


for 5 years.



th GCSC


__ __ __ Withdrawn



Madinah PP2 - ABB Gas turbine, Type 9D, GT#1,2

&5 step up transformers as installed






Against (G2).‎


23/8/2010

Approved


Derogation Granted



Madinah PP2 - ABB Gas Turbines, Type 11D5







__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status


2.5.2 Protection


Madinah PP2 - ABB Gas Turbines, Type 11D5 GT#6-7, do not have

backup protection which is needed to be installed in all the power plants. Derogation is required

for 5 years.



th GCSC


__ __ __ Withdrawn



Madinah PP2 - GE Gas Turbines, Frame 7EA

GT#8-9, is designed to operate under 57-60.6


60.6-62.5 Hz.



at the 9th



__ __ __ Withdrawn



Madinah PP2 - GE Gas Turbines, Frame 7EA







__ __ __ Withdrawn


2.5.2 Protection


Madinah PP2 - GE Gas Turbines, Frame 7EA GT#8-9, do not have

backup protection which is needed to be installed in all the power plants. Derogation is required

for 5 years.



th

GCSC Meeting. The request is withdrawn by the

proposer.

__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status



Yanbu PP - GE Gas Turbines, Frame 5 GT#1

to3, is designed to operate under 57-60.6


60.6-62.5 Hz.



at the 9th

GCSC Meeting since there is since there is

no protection in the unit for over frequency

__ __ __ Withdrawn



Yanbu PP - GE Gas Turbines, Frame 5 GT#1 to 3, can not withstand

10% over voltage. Derogation is required

for 15 years.





__ __ __ Withdrawn


2.5.2 Protection


Yanbu PP - GE Gas Turbines, Frame 5 GT#1 to 3, do not have backup

protection which is needed to be installed in

all the power plants. Derogation is required

for 5 years.



th GCSC


__ __ __ Withdrawn



Taif PP - ABB Gas Turbines, Type 9D1 GT#4

to6, is not recommended to

operate continuously above 60.6 Hz.

Derogation is required for 15 years from

operating under 60.6-62.5 Hz.



at the 9th



__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status



Makkah PP - ABB Gas Turbines, Type 9D1




recommended in the 13th meeting, since all units

under the request have On-Load Tap Changer

__ __ __ Withdrawn


2.5.2 Protection


Taif PP - ABB Gas Turbines, Type 9D1 GT#4 to6, do not have backup

protection which is needed to be installed in

all the power plants. Derogation is required

for 5 years.



th GCSC


__ __ __ Withdrawn



Taif PP - ABB Gas Turbines, Type 9D2

GT#1-2, is not recommended to





Request is withdrawn by the Committee as discussed in the 9th MoM since there

is since there is no protection in the unit for

over frequency

__ __ __ Withdrawn










__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Sr. No.


No.

Date of Submission

Submitted by

SAGC Clause(s) No.



Submitted to ECRA

ECRA's Decision

Action Taken /

Required Status


2.5.2 Protection



GT#1-2, do not have backup protection which is needed to be installed in all the power plants. Derogation is required

for 5 years.



th GCSC


__ __ __ Withdrawn



Taif PP - AEG Gas Turbine designed by GE,

Frame 5 GT#3, is not recommended to






at the 9th



__ __ __ Withdrawn


2.5.2 Protection


Taif PP - AEG Gas Turbine designed by GE,

Frame5 GT#3, do not have backup protection which is needed to be

installed in all the power plants. Derogation is required for 5 years.



th GCSC


__ __ __ Withdrawn

ANNUAL REPORT 2011

GCSC

Schedule C: Recommendations sent to ECRA

ANNUAL REPORT 2011

GCSC

ANNUAL REPORT 2011

GCSC

Schedule D: ECRA’s Decision on the Recommendations

ANNUAL REPORT 2011

GCSC

ANNUAL REPORT 2011

GCSC

Schedule E: Minutes of GCSC’s Meetings

ANNUAL REPORT 2011

GCSC

Minutes of 11th Meeting 16\2\2011

Meeting Period

From 10:00 a.m. to 2:00 p.m.

Venue Sponsor

Madinah- Movenpick Hotel Marafiq

Members Attendance

1- Engr. Hamed ‎Al-Saggaf Saudi Electricity Company Chairman

2- Engr. Fayez Al-Jabri Electricity & Co-generation

Regulatory Authority Regulator

3- Dr. Abdullah Al-Abbas Saudi Electricity Company Generation

4- Engr. Ahmed Al-Furaih Saline Water Conversion

Corporation

Generation

5- Dr. Mahmoud Zayan ARAMCO Generation

6- Engr. Nezar M. Al-Khanaizi Saudi Electricity Company Transmission

7- Engr. Mohammad Al-Zahrani Saudi Electricity Company Transmission

8- Engr. Salman A. Al-Zahrani MARAFIQ Transmission

9- Engr. Mohammad Al-Taher Saudi Electricity Company Distribution

10- Engr. Fouad Al-Abdulqader Saudi Electricity Company Distribution

11- Engr. Shafi Zeitoun ARAMCO Distribution

12- Engr. Khalid Al-Nafey MARAFIQ Distribution

13- Engr. Rasheed Al-Shubaili SABIC Directly-connected

Customers

Guests Attendance

1- Engr. Ramzi Kamfar Saudi Electricity Company Generation

2- Engr. Sheikh Nazemuddin Saudi Electricity Company Generation

3- Engr. Jamal Buqshan ARAMCO Generation

4- Engr. Faisal Al-Yemni ARAMCO Distribution

5- Engr. Khalid Al-Omrani SABIC Directly-connected

Customers

Secretariat

1- Engr. Yousef Al-Zahrani Saudi Electricity Company Secretariat

2- Mr. Sultan Al-Amri Electricity & Co-generation

Regulatory Authority Secretariat

ANNUAL REPORT 2011

GCSC

SN Clause Responsibilities

1- Review of previous MoM, and action plan

Committee concurred the last action plan Committee noted that the Secretariat is to update GCSC page as

per the SAGC page. Dr. Zayan noted to add links in GCSC webpage to Amendment and

Derogation Record for the original request and the decision taken.

Secretariat

Secretariat

2- Presentation of the 3rd Annual Report, and get it agreed.‎

Al-Saggaf introduced the annual report to the committee.

Dr. Al-Abbas requested the committee to publish printed copy of

the report to different stakeholder.

Al-Saggaf‎ informed that the Company usually published the report

electronically through the web, and send a printed copy to ECRA.

Committee requested ECRA to published at least 50 copies of the

report.

Committee agreed to modify Chart 5 of the report by including the

attendance of Alternates.

Fayez suggested adding a sentence at the end of clause b and c at

page 12, to brief the results of the studies.

Khalid pointed that Aramco Derogations attached in its license was

not included in the record

Al-Saggaf‎ stated that the record include only the requests

submitted to the committee.

Shafi mentioned that Captive cogeneration can be added to the

code so, all companies having similar technical conditions will be

dealt with as captive-Cogen. Moreover, Saudi Aramco generation is

used for industrial purposes and not as the case of Utility

companies.

Fayez clarified that any company having similar technical

conditions will be granted similar derogations.

Al-Saggaf‎ requested the Members to send and finalize their

comment on the report within two weeks.

3- Discuss the progress for the sub-committee of reviewing SEC

derogation requests

Dr. Al-Abbas presented a summary of the existing units as per

different manufacturers. He informed the committee of the

correspondences to manufacturers and their responses regarding

underfrequency and overvoltage cases as mentioned in the sub-

committee minute of meeting at 12\1\2011.

Ahmad pointed that according to clauses 4.4.4.4 (iv), and 4.4.3.2

(v) the generator are allowed to not comply with specified limits

for voltage and frequency in certain conditions to protect its

ANNUAL REPORT 2011

GCSC


plants. Thus, no need to request derogation in those conditions.

Al-Saggaf‎ clarified that clause 4.4.4.4 (iv), and 4.4.3.2 (v) is made

for unexpected operational conditions and not applicable to these

cases which known in advance that can be complied with the

SAGC.

Ahmad and Dr. Al-Abbas added that the manufacturer response is

based on maximum continuous rating (MCR).

Al-Saggaf‎ clarified that MCR is required for 5% as specified in

clause 2.5.5.6 of SAGC, and +10% voltage limits are for the system

not on generation terminals.

Dr. Zayan pointed out that clause 2.5.5.14 page26 of SAGC stated

that generator to comply with voltage limit referred in clause 2.4.3

Ahmad added that the limit specified in clause 2.5.5.14 is required

for transient condition not for normal condition.

The sub-committee was directed to clarify from manufacturers

about +10% voltage capabilities with compensation of output

power.

Dr. Al-Abbas added that the manufacturers have shown their

responses very clearly as well as the corresponding references so

there is no need to contact the manufacturers again and such issue

should be resolved by either the sub-committee or the committee.

Committee insisted that the sub-committee should finalize voltage

limit study.

Sub-committee

Sub-committee

4- Voting on a set of derogations submitted by SEC ‎Generation-

Western Operating Area- ‎regarding voltage ‎variation of generating

unit:‎

‎09D021,‎09D024,‎09D027,09D029,‎09D032,‎09D035,‎09D038,‎

‎09D041,‎09D045,09D049,‎09D053,‎09D056,09D059,‎09D062,‎

09D065, 09D068, 09D071.‎

The committee decided to defer voting until the sub-committee

complete voltage limit study.

5- Voting on a set of derogations submitted by SEC Generation‎ -

Western Operating Area- regarding frequency variation of

generating unit:

09D023,‎09D026,09D031,09D034,‎ 09D037,‎09D040.‎‎

It is postponed to the next meeting, due to shortage of time.

6- Discussion of a suitable mechanism to sort all approved

‎recommendations to be ‎included ‎in the new publication of ‎the

Code.‎


ANNUAL REPORT 2011

GCSC


7- Proposing a mechanism to insure a proper implementation ‎of the

Code.‎


8- Communication Channel over the internet.‎


9- Determining the date and venue of the next meeting

The next meeting will be conducted on Tuesday 24 May 2011, the

venue will be in Khobar and it will be hosted by SWCC.

Ahmad, and

Secretariat

10- Any other business

Nil.

11- Acknowledgement of Engr. Shafi Zeitoun, the previous GCSC

member

The committee appreciated and acknowledged Engr. Shafi Zeitoun

for his participation and efforts during his membership in the

GCSC.

Acknowledgement of Marafiq

The committee thanked and appreciated Marafiq for the generous

hosting for the meeting, and the warm welcome and hospitality.

Hamed Abdallah Al- Saggaf

Grid Code Supervisory

Committee, Chairman

cc: Electricity & Co-generation ‎Regulatory Authority; and

All Members and participants

ANNUAL REPORT 2011

GCSC


Meeting Period

From 10:00 a.m. to 2:00 p.m.

Venue Sponsor

Al-Khobar, Coral International Hotel

Saline Water Conversion

Corporation (SWCC)

Members Attendance


2- Engr. Fayez Al-Jabri Electricity & Co-generation Regulatory Authority

Regulator


4- Engr. Ahmed Al-Furaih Saline Water Conversion Corporation

Generation

5- Dr. Mahmoud Zayan ARAMCO Generation

6- Engr. Nezar M. Al-Khonaizi Saudi Electricity Company Transmission





Absentee(s) with Alternate(s)


2- Engr. Saleh Al-Amri ARAMCO Distribution

3- Engr. Rasheed Al-Shubaili SABIC Directly-connected

Customers

Alternates Attendance


2- Engr. Khaled Al-Ghadban ARAMCO Distribution

3- Engr. Khalid Al-Omrani SABIC Directly-connected Customers

Guests Attendance



Secretariat


2- Mr. Sultan Al-Amri Electricity & Co-generation

Regulatory Authority Secretariat

ANNUAL REPORT 2011

GCSC


1- Review of previous MoM, and action plan

Committee reviewed the previous MoM. Committee approved the agenda items to be discussed. The action plan was discussed and updated. Dr. Al-Abbas asked about the necessity of appointing Alternates. Chairman clarified that, as stated in the GCSC Constitution, it is a

privilege for each member to appoint his Alternate as he decides. Al-Jabri commented that any member replacement shall be

officially notified to ECRA. Dr. Zayan noted to add FAQ (frequently asked questions) in the

GCSC site to include all inquiries raised by other parties with their answers.

Secretariat

2- Discuss the progress for the sub-committee of reviewing SEC

derogation requests

Dr. Al-Abbas explained the summary of the recommendations on

the study.

Dr. Zayan presented the outcome and the results of the sub-

committee's recommendations.

Sub-committee proposed to accept the small difference (0.1 Hz) in

frequency limits of the ALSTOM unts, given that the ‎ALSTOM units

fulfill the requirements of section 2.4.2.2 of the SAGC with a slight

‎variation (57.6Hz instead of 57.5Hz) in the ‎lower limit of the “30

minute” frequency ‎operating range. The subcommittee

determined ‎that this 0.1Hz difference is acceptable and ‎hence,

ALSTOM units should be considered as ‎in compliance with the

SAGC's frequency ‎variation requirements.‎

Chairman clarified that any deviation from the limits specified in

the SAGC is considered as violation and noncompliance with its

requirements.

Sub-committee determined that sections 2.5.5.2 and 2.5.5.8 of the

SAGC clearly stipulate that a proportionate decrease in active

power of the generating units is ‎allowed as a consequence of

deviation of the frequency to operate within the underfrequency

‎range of 57.0 to 59.5‎Hz. Since this frequency range is covered

‎under the exceptional circumstances tabulated in section 2.4.2.2 of

the SAGC, and the ‎equipment manufacturers (including ALSTOM)

are in compliance, then the subcommittee does ‎not see a need for

SEC Western region to seek derogation from section 2.4.2 of the

SAGC.‎

Al-Furaih added that the SAGC is more flexible than manufacturers'

conditions since it allow compensation from 59.5Hz while the

manufacturers permitted that from 58Hz.

ANNUAL REPORT 2011

GCSC


Ramzi noted that all units can withstand 57Hz for about 5 seconds

and not for 30 seconds. Hence, units need to be derogated.

Dr. Zayan noted that the 30 seconds limit is for a span of

frequencies starting at 57.4Hz continuing down to 57Hz. That is,

the 30-second timer starts once the frequency reaches 57.4Hz (as it

continues dropping toward 57Hz), and it does not start at 57Hz.

Meaning, the 30-second period is for 57.4Hz, 57.3Hz, 57.2Hz,

57.1Hz, 57.0Hz, and all fractions in between. For a spiraling system

if it stays 5 seconds (out of these 30 seconds) at 57Hz then you

might as well trip. Of course, if frequency drops below 57.0Hz for

any duration, then the unit is allowed to trip. If SEC’s 5-second

timer only starts counting once the frequency drops to 57Hz, it

means that these units had plenty of time prior to reaching 57Hz.

Furthermore, if the SEC units do not have any other frequency

timer/relay settings, then they have infinite time prior to reaching

57Hz, but that has to do with individual User’s implementation,

while the Code speaks to design and manufacturer’s specifications.

3- Voting on a set of derogations submitted by SEC Generation‎ -


generating unit: 09D023,‎09D026,09D031,09D034,‎ 09D037,‎09D040.‎‎

The committee recommended to grant derogation for Alstom

(ABB) units as follow: Units are to be derogated for the lower limit

57.5 Hz for 30 minutes to be 57.6Hz for 30 minutes (11 votes out of

13)

Al-Furaih and Al-Zahrani disagreed, they noted that the units have

no setting on 57.5Hz or 57.6Hz.

The committee also recommended to grant derogation for Alstom

(ABB) units as follow: Units are to be derogated for only the lower

limit 57.0 Hz to be for 5 seconds period instead of 30 seconds, the

frequencies above 57.1Hz to 57.6Hz will be for 30 seconds as

stated in the SAGC. (12 votes out of 13)

Al-Furaih disagreed. He stated that "The sub-committee in its

report have reached the conclusion that SEC ‎‎Western Region Unit

are complying “based on ALSTOM (ABB) Document # ‎‎HTCZ656910

Rev. A” to SAGC requirements of Section 2.4.2.2 upto almost a

‎frequency ‎of 57.5Hz.with slight and insignificant difference This is

also ‎corresponding to IEC ‎‎60034-3. Now neither SAGC nor any

other relevant reference ‎requires that generators ‎should remain

connected and synchronized to TSP for 30 ‎second duration at any

specific ‎frequency level. What section 2.4.2.2 calls for is that the

ANNUAL REPORT 2011

GCSC


‎TSP frequency could reach 57 ‎Hz under exceptional circumstances,

which according ‎to SEC Western Unit could be ‎tolerated for 5

second based on existing setting. This ‎even without manipulating

with active ‎power output of the generators which SAGC ‎permits

(Section 2.5.5.2.) under such ‎conditions.‎" ‎For all above reasons; he

saw no justifications whatsoever to entertain the request of ‎SEC

‎Western Unit for seeking derogation from Section 2.4.2.2.

4- Voting on a set of derogations submitted by SEC ‎Generation-

Western Operating Area- ‎regarding voltage ‎variation of generating

unit:‎

‎09D021,‎09D024,‎09D027,09D029,‎09D032,‎09D035,‎09D038,‎

‎09D041,‎09D045,09D049,‎09D053,‎09D056,09D059,‎09D062,‎

09D065, 09D068, 09D071.‎

All units are compliant with 5%, however, they are not compliant

with +10% for 30 minutes.

Al-Furaih noted that clause 2.5.5.14 is required for faults and

transient condition and not for steady state condition.

Chairman clarified that clause 2.5.5.14 of SAGC is for continuous

uninterrupted operation for the voltage variation specified in

(2.4.3), while the second part of the clause elaborated the fault

conditions.

Dr. Zayan noted that clause 2.5.5.14 is to be modified to remove

misunderstanding.

Committee asked Al-Furaih and Dr. Zayan to prepare the required

amendments to the clause 2.5.5.14.

Ramzi noted that the units are able to withstand up to almost 10

seconds on +10% before these units were disconnected.

Subcommittee pointed that the impact on units from changing

Voltage and frequency is a dynamic effect not relating to the time

only.

Committee noted that units with On-Load Tap Changer (OLTC ) can

comply with voltage limits, while those with off-load tap changer

may not.

Al-Zahrani noted that OLTC has no effect on unit's capability to

withstand +10%, since it depends on thermal effect.

Committee proposed to grant derogation for +10% for 10 minutes

instead of 30 minutes, and for units with off-load tap changer only.

Voting was postponed to the next meeting since the issue need

further discussion.

Committee asked Ramzi to list all the requests with ‎off-load tap

Al-Furaih and

Dr. Zayan

Ramzi

ANNUAL REPORT 2011

GCSC


changer to be studied further.‎

5- Discussion of a suitable mechanism to sort all approved

‎recommendations to be ‎included ‎in the new publication of ‎the

Code.‎

Al-Jabri clarified that after 3 years of GCSC functioning, it is

necessary to make a mechanism to include all approved

recommendations for amendments in the Code, and to establish a

subcommittee to review the Code. The period of issuing the new

version of the Code should be decided to be each 3 years.

Al-Nafey recommended that 3-5 years is suitable for issuing the

new version. It is recommended also to make new workshops for

the SAGC.

Chairman noted that it may be preferred to form a subcommittee

for reviewing the SAGC based on the specialized groups:

generation, transmission, and distribution.

Chairman noted also that the proposal of making new SAGC

workshops will be planned to enforce the proper implementation

of the Code.

Committee decided to re-issue new revisions of the Code every 5

years, hence the next version is expected to be issued in July 2012.

Dr. Zayan highlighted that SAGC contained several typographical

errors and technical discrepancies in the few sections he visited

while working on the frequency and voltage derogations, and

noted if we found multiple errors in a small part of the code, then

there are probably large number of errors in the rest of the Code.

He pointed out the following:

Section 2.5.5.14: Committee already agreed that this section

needs rework to separate between generators running in

continuous operation and under fault conditions.

Section 2.5.5.14: Fix the voltage levels and durations under

transient fault conditions, and clarify the insertion of 90%

voltage.

Section 2.4.3: Fix the language addressing the +10% over

voltage limit which states: “maximum over voltage limits

stated below should not be exceeded for more than thirty (30)

minutes”. The way it is written could imply that voltage can go

above 110% (no telling by how much) as long as it is not more

than 30-minutes!

Section 2.5.5.5: The section language needs revising, as the

phrase starting with “also….” is not clear:

ANNUAL REPORT 2011

GCSC


“2.5.5.5 The Generating Unit shall be capable of absorbing

Power (under Excitation operation) defined by the capability

Generating Unit also at maximum voltages (380, 230, of the

Grid) assuming that Stability is maintained.”

Hence, he recommended hiring a consultant to review the Code,

and form a subcommittee to work with the consultant to make the

required changes. He offered to be part of this team.

Chairman clarified that the Code was reviewed by two consultants

from ECRA, and also it was reviewed by many grid's stakeholders

including ARAMCO, WEC, and IPPs. All appreciated the work done

and the development team responded to all comments officially.

The next step is to open the floor for any person to raise his

amendment requests to the committee.

6- Proposing a mechanism to insure a proper implementation ‎of the

Code.‎

Al-Jabri asked to build ‎a mechanism to insure a full implementation

‎of the Code. He asked all Members to bring case studies from their

representative companies regarding voltage drops, frequency

variations, and other cases related to the Code requirements to be

discussed in the GCSC meetings. The GCSC should discuss these

issues to recommend the proper procedures to enforce the Code's

implementation.

Al-Jabri noted that many entities did not submit any derogation.

Does it mean that they are fully compliant with the Code?

Al-Furaih stated that SWCC prepared many derogation requests

regarding requirements from generating units, but it is dependent

on the interpretation of the Code's clauses. He emphasized that

each Member is responsible to follow-up compliance with the Code

of its representative company.

Chairman noted that SEC is preparing monitoring guidelines of the

SAGC, and it will be shared with the committee when it is

completed.

Al-Nafey said that Marafiq had prepared a list of all provisions of

the Code, including whether they are in compliant or not, and also

includes the necessary or required actions.

Al-Jabri requested that the representatives from the Transmission

operation bring to the next meeting examples of incidents of

voltage or frequency variations and the status of the connected

generators whether in compliance or not. He also requested that

this becomes a fixed agenda item in the next regular meetings of

M. Al-Zahrani,

and Salman

ANNUAL REPORT 2011

GCSC


the GCSC committee.

Chairman noted that the national control center will have

responsibilities in this regard and there will be a technical audit in

the new setup of the Company to report the technical

performance.

7- Communication Channel over the internet.‎

Salman introduced a presentation on how to build interactive

communication channel for the GCSC to facilitate sharing of

information through internet and to seek the insight of GCSC

members during the implementation of the Code.

The committee welcomed the idea, and recommended to build a

site in Facebook or Twitter channel.

Chairman proposed to add also a photo gallery for the meetings.

Salman, and

Secretariat


The next meeting will be conducted on Wednesday 21 September

2011, in Riyadh and it will be hosted by SEC.

Al-Saggaf, and

Secretariat

Acknowledgement of SWCC

The committee thanked and appreciated SWCC for the generous hosting

of the meeting, and the warm welcome and hospitality.



Committee, Chairman



ANNUAL REPORT 2011

GCSC


Meeting Period

From 10:00 a.m. to 2:00 p.m.

Venue Sponsor

Riyadh, Madareem Crown Hotel Saudi Electricity Company (SEC)

Members Attendance



3- Dr. Mahmoud Zayan Saudi Aramco Generation




Absentee(s) with Alternate(s)

1- Engr. Fayez Al-Jabri Electricity & Co-generation Regulatory Authority

Regulator




5- Engr. Saleh Al-Amri Saudi Aramco Distribution

6- Engr. Rasheed Al-Shubaili SABIC Directly-connected Customers

Absentee(s) without Alternate(s)

1- Engr. Ahmed Al-Furaih Saline Water Conversion

Corporation

Generation

Alternates Attendance

1- Engr. Fahad A. Al-Ajlan Electricity & Co-generation

Regulatory Authority Regulator


3- Engr. Mohammad Mazhar Saudi Electricity Company Distribution

4- Engr. Saleh A. Al-Obysi Saudi Electricity Company Distribution

5- Engr. Khaled Al-Ghadhban Saudi Aramco Distribution

6- Engr. Khalid Al-Omrani SABIC Directly-connected

Customers

Guests Attendance


ANNUAL REPORT 2011

GCSC


1- Review of previous MoM

Committee reviewed the previous MoM. Committee approved the agenda items to be discussed.

2- Follow up on action plan items

The action plan was discussed and the opened items are updated.

GCSC recommended that all new generation projects should

comply with the Code.

For Item 29 of the action plan, Secretariat clarified that any

derogation request should include the requirements under clause

1.11.4 (i) up to (vi) of the Code. Ramzi notified that it is not possible

to have a plan to mitigate the expected risks and restoring

compliance in this case.

For Item 28, Dr. Zayan proposed an amendment request for clause

2.5.5.14 of the Code, and it will be discussed when Al-Furaih

comes.

For item 26, it is discussed under clause 6 below.

For item 25, Salman mentioned that he is collecting the

information which is applicable to be posted in the proposed site.

3- Voting on a set of derogations submitted by SEC Generation-

Western Operating Area- regarding voltage variation of generating

unit:

09D021,‎09D024,‎09D027,09D029,‎09D032,‎09D035,‎09D038,‎

09D041,‎09D045,09D049,‎09D053,‎09D056,09D059,‎09D062,‎

09D065, 09D068, 09D071.‎‎‎

Ramzi pointed that requests 09D021,‎09D024,‎09D027,09D029,‎‎

09D032,‎09D035,‎09D038,‎09D059,‎09D062,‎09D065,09D068,09D071

are withdrawn as recommended in the last meeting, since all units

under these request have On-Load Tap Changer (OLTC).

Committee Voted on the remaining 5 requests 09D041,‎09D045,

09D049,‎09D053,‎09D056 which have off load tap changer.

Committee recommended to grant derogation for Alstom (ABB)

units (09D041,‎ 09D053,‎‎09D056)as follow: Units are to be

derogated for 15 years for operating on +10% for 10 minutes only

instead of 30 minutes (12 votes out of 12), G2 absent.


3- Engr. Mohammad Sajid Saudi Electricity Company Transmission

Secretariat


ANNUAL REPORT 2011

GCSC


Committee recommended to grant derogation for other units

(09D045, 09D049) as follow: Units are to be derogated for 15 years

from operating on +10% limit. (8 votes out of 12) against R1, T1,

T2,T3. G2 absent.

4- Voting on a set of derogations submitted by SEC Generation-


generating unit: ‎09D026.‎‎

Committee asked Ramzi to provide technical reason for seeking

derogation on over frequency.

Chairman asked about recommendation of subcommittee.

Ramzi

Subcommittee

5- Discussion of 2 new Amendment Requests regarding harmonizing

between GCC Interconnection Transmission Code and the Saudi

Arabian Grid Code.

Sajid gave a presentation on the requests 11A031, 11A031 to

remove inconsistency between the SAGC and ITC.

Committee recommended to accept the amendment request

11A030 (12 votes out of 12), G2 absent.

Committee recommended to accept the amendment request

11A031 (12 votes out of 12), G2 absent.

Some Members suggested notifying such approved changes to

Users and giving them grace time for compliance.

Ghadhban suggested to define how much time should be given for

the users to comply with the new amendments.

Chairman highlighted that any amendment or derogation will

follow same process as in clause 1.11.14 of the SAGC.

6- Presentation on compliance of users with the Grid Code

requirements.

Upon request from Al-Jabri, GCSC decided to add a fix agenda item

to discuss examples for user compliance with the Code.

Salman argued that the scope of user’s compliance is not clear.

Chairman clarifies that compliance is not related to the KPI of the

grid, but is mainly related to voltage and frequency limits and other

standards specified in Chapter 2 and other Chapters of the Code.

Dr. Zayan suggested that compliance is to be monitored for the

users and the TSP as well.

Committee stated that the GCSC is required to guide

implementation of the Code, but not asked to conduct monitoring

ANNUAL REPORT 2011

GCSC


compliance itself since it is beyond its function and ability; however

the TSP should monitor the compliance with the Code as stated in

the Implementing Regulations of the Electricity Law- Condition

11.1.11.

Chairman suggested to form a sub-committee from M. Al-Zahrani,

Salman, and headed by Al-Jabri to follow up the issue and report its

results to GCSC.

Al-Jabri,

M. Al-Zahrani,

and Salman

7- Discuss the merits of having the OLTC on the GSU Transformer.

Ghadhban informed that he is conducting a study that evaluate the

feasibility of establishing the new generation units’ transformers

with off load tap changer to avoid OLTC malfunction problem. Also

during the meeting, Ghadhban highlighted that the main purpose

of raising this topic is to discuss and share experience with other

companies operating their GSU Transformers with and without

OLTC. Ghadhban highlighted that more research is required on this

topic before we can go forward and decide to amend the grid code

or leave it for each user to ask for derogation for their future

plants.

Nezar informed to committee that the problem happened in

Qurayyah PP was not resulted from OLTC. OLTC may cause up to

only 9% of generating unit (step up transformers) problem. OLTC is

considered a good tool to regulate the voltage in addition to other

components such as SVCs, capacitors, etc.

Dr. Zayan informed that sometimes AVR and OLTC seem

overlapping operation of each other.

Dr. Abbas informed that a group from Generation Technical Service

Department in Dammam wanted to share their experience

regarding OLTC in the next meeting.

The topic will be further discussed in the next meeting.

Al-Abbas

Ghadhban


The next meeting will be conducted on Monday 9 January 2012, in

Riyadh and it will be hosted by ECRA.

Fayez, and

Secretariat

9- Any other business

Dr. Zayan argued that the Standards and procedures mentioned in

SAGC Chapter 2 are not available.

Chairman notified the argument and informed that SEC -

Transmission has been working on collecting and unifying those

documents mentioned in the Code from SEC’s departments.

Committee suggested to upgrade the GCSC website by mentioning

the new changes and decision of the GCSC.

Secretariat

ANNUAL REPORT 2011

GCSC


Acknowledgement of SWCC

The committee thanked and appreciated SEC for the generous hosting of

the meeting, and the warm welcome and hospitality.



Committee, Chairman



ANNUAL REPORT 2011

GCSC

Please contact for your comments and suggestions at:

Grid Code Supervisory Committee

Al-Riyadh, Kingdom of Saudi Arabia

http://www.se.com.sa/SEC/English/Menu/PowerTransmissionNetwok/

[email protected]

http://www.se.com.sa/SEC/English/Menu/PowerTransmissionNetwok/

mailto:[email protected]

grid code supervisory committee...engr. khalid huzaifa al-nafey engr. rasheed mohammad al-shubaili...

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