contents · contents 1. introduction 1 2 ... detail contact information, ... sa riyadh 2 may 22,...

12012dsadasdas 2013 Annual Report

CONTENTS 1. INTRODUCTION 1

2. MISSIONS AND OBJECTIVES 1

3. PQC MEMBERS 2

4. 2013 PQC ACHIEVEMENTS 3

4.1 PQC Achievements – 1st Meeting …………………….………………………. 3

4.2 PQC Achievements – 2nd Meeting ………………….…………….………….. 5

4.3 PQC Achievements – 3rd Meeting ………………….…………………………. 7

4.4 PQC Achievements – 4th Meeting ………………….…………………………. 9

5. FOLLOW UP THE 2012 PQC RECOMMENDATIONS 12

6. 2013 BULK CUSTOMERS DISTURBANCES 13

6.1 Disturbance Records – Trend Data …………………….……………………….. 13

6.2 Disturbance Records – Causes ………………….…………….………………….. 14

6.3 Disturbance Records – Voltage Levels…………….……………………………. 16

6.4 Disturbance Records – Locations ………………….…………………………….. 17

6.5 Key Performance Indicators – KPIs………………….…………………………… 20

6.5.1 Customer Average Interruption Duration Index………………….………. 20

6.5.2 Voltage Dip ……………………….…………………………………………………… 21

7. CONCLUSIONS 22

8. 2013 PQC RECOMMENDATIONS 23

9. 2014 PQC PLAN 24

Appendix (A) 25


1

1. INTRODUCTION

The Power Quality committee (PQC) was formed according to the recommendations of 2004

PQ Workshop held in Riyadh March, 2004. The PQC is a permanent committee with

membership comprising of major industries, institutional firms and utilities such as Saudi

Electricity Company (SEC) and its subsidiaries , chaired by the representative of the hosting

organization.

One of the important recommendations of the 2004 PQ Workshop is to start establishing an

annual report dealing with the existing PQ levels across National Grid SA transmission

networks and its relative impacts upon the bulk industrial customers. The target of the desired

annual report is to:

Exchange information of PQ related topics between all PQC members.

Extract lessons learned from discussing disturbances and fault incidents reported by

SEC transmission systems and reported by bulk customers.

Develop PQ database identifying records of disturbances and their effects upon the

operation of their major industrial customers specifically Saudi Aramco and SABIC

companies.

Recommend for follow up actions so that secure supply system and high quality of

power supply can be verified.

The purpose of implementing the work is to coordinate between all PQC members,

information and experiences exchange, and to ensure secure supply electricity delivered by

National Grid SA transmission networks to the major industrial customers so that adequate

quality of power supply that meets customer's requirements and needs can be obtained.

Yearly, PQC members with the concern of the PQ issues do a comprehensive report

discussing their efforts and their feature plans. During the year of 2012, PQC members have

scheduled four meetings. The assigned meetings were useful where PQ related topics have

been discussed, recent customer or university PQ studies and projects have been

demonstrated, and follow up actions and recommendations have been reviewed.

2. MISSIONS AND OBJECTIVES

PQC will exchange information and technical data and unify procedures related to PQ issues

in the Kingdom through the year of 2013. The Committee will form a good interconnection

tool between SEC and its subsidiaries, the major bulk customers (Saudi Aramco and SABIC),

and Kingdom research institutes. Supplying system disturbances that cause bulk customer's

miss-operations or stop of production will be recorded and analyzed. Identifying and

following causes of disturbances and providing recommendations to enhance the performance

of the supplying systems will also be carried out.

The main objectives of the desired PQC- annual report are:


2

Reporting Disturbances:

The performance of the supplying system will be identified throughout reporting

disturbances that affect the operation of the bulk customers with the transmission

networks. Any event in the power systems, that results in deviation of the supplying

system voltage from the normal (±5 %) and emergency (±10%) conditions are planned

to be collected.

Identifying PQ Problems:

Analysis tools will be executed to identify disturbances, its origin and causes. This

will be useful in providing suitable remedy action to reduce the possibility of

disturbance occurrence.

Recommend Follow up actions:

Following the analysis procedures, certain recommendations might be stated for

specific remedy actions to be followed.

Enhance coordination between all parties:

Coordination between all parties is one of the PQC objectives. Coordination between

transmission supplying system capabilities and bulk customer's needs, exchange

information and experiences, and scheduled meetings between all parties will be

useful to verify the maximum secure operating conditions and decrease the possibility

of disturbance re-occurrence.

Handle PQ database:

Finally, National Grid SA is handling the PQ database (Previous 5 years of data)

required for the evaluation in the PQC annual disturbance report.

3. PQC MEMBERS

Members who are willing and able to commit or engage their organization or institution in

PQC activities consists of:

Saudi Electricity Company (SEC).

National Grid SA.

Electricity and Co-Generation Regulatory Authority (ECRA).

King Abdulaziz City for Science and Technology (KACST).

King Fahd University of Petroleum & Minerals (KFUPM).

Saudi Aramco.

SABIC. King Abdullah City for Atomic and Renewable Energy (K.A.CARE)

Detail contact information, name, affiliation, contact phone and e-mail of all the PQC

members are listed in appendix (A)


3

4. 2013 PQC ACHIEVEMENTS

PQC has been verifying certain achievements throughout definite schedule meeting during the

year of 2013. Dates, hosts, locations, and PQC discussion points of the assigned meetings are

explained in the following sub-sections.

2013 MEETING SCHEDULE

Meeting # Meeting Date Host Location

1 Feb 27, 2013 National Grid SA Riyadh

2 May 22, 2013 SABIC Eastern Province

3 Sep 19, 2013 Saudi Aramco Eastern Province

4 Dec 19, 2013 ECRA Riyadh

4.1 PQC Achievements – 1st Meeting

Meeting Discussion Points

The meeting started at 09:30, Mr. Abdulrahman Al-Shabnan, started the meeting by

welcoming all attendees and thanking them for attending the First Power Quality Committee

(PQC) meeting, 2013. Then, PQC members reviewed the meeting agenda and the following

were discussed:

I. Review Last Minutes of Meeting

The last minutes of Meeting were reviewed and action items were discussed as follow:

o PQC members shall review the tentative outline of the PQ Training Course:

Already done by the PQC members before the meeting. Opinions and

comments have been sent to Dr. Mahmoud Kassas to be considered in the

revising of the outline of the PQ Training course.

o Topics for all technical papers for 2013 PQ Workshop should be sent to Dr.

Mahmoud Kassas:

All participants have sent the topics they are going to present in thee

intended PQ workshop.

o Registration in the PQ training course according to the commitment from

each party of PQC:

Dr. Mahmoud Kassas confirmed the completion of the registration from

most of the entities of PQC as per their commitment. The remaining ones

Date : Wednesday, 27-02-2013

Time : 09:30 AM - 01:00 PM

Venue : Riyadh


4

have been requested to expedite the registration process in the PQ

training course.

o Invitations and Outline of the 2013 PQ Workshop:

Dr. Mahmoud Kasass already sent thee invitations along with the outline

of the PQ workshop to PQC members.

o Invitation to non PQC members shall be sent by KFUPM for participation in

the 2013 PQ workshop:

Dr. Mahmoud Kasass already sent thee invitations along with the outline

of the PQ workshop to Marafiq and SWCC.

o Registration in the 2013 PQ Workshop:

The registration in the PQ workshop is going on and all entities shall

complete thee registration process by 03 March 2013.

o Resend invitation to SWCC for sending representatives to PQC meetings:

Mr. Abdulrahman Al-Shabnan will resend the invitation to SWCC after

getting the contact person information.

o Resend invitation to Marafiq for sending representatives to PQC meetings:

Mr. Hussein Al-Abbad already sent again the invitation to Marafiq.

II. Presentations.

o " SEC and National Grid SA preparation for next summer "

A brief presentation was presented by Mr. Abdullah Al-Shehri, National

Grid SA, followed by group discussion.

o “S. Aramco & SABIC Disturbances List”

A brief presentation was presented by Mr. Abdulrahman Al-Shabnan,

National Grid SA, followed by group discussion.

III. 2013 Power Quality Workshop

o The attendance discussed the preparations by the organizing committee and

agreed on the overall program off the PQ workshop.

IV. Next PQC Meeting Location

o The next meeting will be on 22th

May 2013, at Eastern Province.


5

4.2 PQC Achievements – 2nd Meeting


The meeting started at 09:30, Mr. Hussein Al-Abbad, PQC Vice Chairman - SABIC, started

the meeting by welcoming all attendees and thanking them for attending the Second Power

Quality Committee (PQC) meeting, 2013. Then, PQC members reviewed the meeting agenda

and the following were discussed:



o Re-send invitation to SWCC for sending representatives to PQC meetings:

Mr. Abdulrahman Al-Shabnan confirmed that the invitation to SWCC to

join the PQC has been re-sent by the PQC chairman.

II. Last Power Quality Workshop & Training Evaluation and Improvement Ideas

o The committee members expressed deep thanks to Dr. Mahmoud Kassas on

the excellent works of the organization and the arrangement and the exerted

efforts that led to successful workshop and training.

o Dr. Mahmoud Kassas presented the evaluation of the conducted PQ training

course and PQ workshop based on the feedback by the participants on the

collected questionnaires.

o The attendance discussed the improvement needs and ideas.

o The members emphasized to keep up the same level of excellence or go

beyond when the future events of training and workshop are planned.

o The group agreed to conduct one PQ training course yearly and it shall

contains basic as well as advanced parts relevant to the Power Quality

discipline.

o PQC members will decide in the 3rd

meeting the date and venue for the 2014

PQ training course. Proposals and ideas about 2014 PQ training course shall

be collected by Saad Al-Aamri from the members. Dr. Mahmoud Kassas will

present in the 3rd

meeting the study of such proposals and ideas.

o The members agreed for one theme in the yearly PQ workshop and the PQ

workshop shall be one day.

o The members recommend that two committees shall be constituted in the 3rd

meeting and to be effective as following: 1) Organizing committee to do all

Date : Wednesday, 22-05-2013

Time : 09:30 AM - 01:00 PM

Venue : Al-Khobar


6

necessary organize, arrangement and coordination of the workshop activities.

2) Technical committee to review early the technical papers and the topics in

the workshop and elevate their level.

o The attendance recommended that the manufacturers and vendors shall be

invited to attend and participate in workshop.

III. Presentations

o “Voltage Dips Impact and Mitigation to Petrochemical Industries-Case

study”

A brief presentation was presented by Mr. Majdi Al-Faraj, SABIC,

followed by group discussion.

o " S. Aramco & SABIC Disturbances List”

A brief presentation was presented by Mr. Saad Al-Aamri, National Grid

SA, followed by group discussion.

IV. Power Quality Incidents Record and Discussion

o The group recommended that the PQC members should share experience and

present in each meeting case study or records of PQ incidents.

V. Other Issues

o Review of PQC Charter.

The members decided to review the PQC charter and make assessment

and gap analysis in the 4th meeting.

Points for discussion and proposals and ideas shall be sent to the PQC

secretary before the 4th meeting.

The attendance recommended to invite K.A.CARE (King Abdullah City

for Atomic and Renewable Energy) to join the PQC and participate in the

meetings and the PQC activities.

VI. Next PQC Meeting Location

o The members agreed on changing the date of the 3rd

PQC meeting to be 19th

September 2013, at Eastern Province.


7

4.3 PQC Achievements – 3rd Meeting


The meeting started at 09:30, Mr. Hussein Al-Abbad, PQC Vice Chairman - SABIC, started

the meeting by welcoming all attendees and thanking them for attending the Third Power

Quality Committee (PQC) meeting, 2013. Then, PQC members reviewed the meeting agenda

and the following were discussed:



o Send invitation to KA-CARE for sending representatives to PQC meetings:

Invitation to KA-CARE has been sent by the VP of Planning, National

Grid SA, and awaiting the reply to join PQC.

o Proposals and ideas by the members about 2014 PQ training course:

Mr. Saad Al-Aamri compiled the proposals and ideas by the PQC

members about 2014 PQ training course and forwarded them to Dr.

Mahmoud Kassas for study.

o Present the study of the proposals and ideas about 2014 PQ training course:

Dr. Mahmoud Kassas studied the received proposals and ideas and

briefed the attendees with the study result.

o Decide the date and venue of 2014 PQ training course and workshop:

The group discussed in this meeting the appropriate date and place to

conduct 2014 PQ training courses and workshop.

o Constitute the organizing committee and the technical committee for 2014

PQ workshop:

The attendance agreed in the meeting to assign one committee,

designated to undertake the overall organizing and technical preparation

for conducting 2014 PQ training courses and workshop.

o Distribute existing PQC charter and list up points for discussion and

proposals and ideas for the 4th meeting:

Mr. Saad Al-Aamri already sent the PQC charter to the members.

Mr. Saad Al-Aamri shall prepare main points, extracted from the charter,

and send them to the PQC members to get respective opinions and ideas

for discussion in the next meeting.

Date : Thursday, 19-09-2013

Time : 09:30 AM - 01:00 PM

Venue : Khobar


8

II. Discuss the Organization and the Preparation for 2014 PQ Training Course and 2014 Annual Workshop

o The members agreed on the theme of intended 2014 Power Quality

Workshop to be: “Impact of Integrating Renewable Energy Sources on the

Power Quality”.

o PQC agreed to conduct two PQ training courses, Basics & Advanced, instead

of one course during 2014.

o Attendance agreed preliminary on the targeted date for PQ Workshop and

Advanced PQ Training Course to be in the week 16-20, March 2014.

o Dr. Mahmoud Kassas contacted with some experts and specialists to

introduce PQ training course and to be as speaker in the PQ workshop.

o During the meeting, the attendance discussed some suggested names of

international experts in PQ. However, the members may suggest names of

international experts or specialists in PQ and to be sent to Dr. Mahmoud

Kassas soon.

o The attendance agreed in the meeting to assign one committee, designated to

undertake the overall organizing and technical preparation for conducting

2014 PQ training courses and PQ workshop. Names of the committee

members as following:

Dr. Mahmoud Kassas (Leader).

Dr. Aymen Al-Abduljabbar.

Mr. Abdulaziz Al-Zahrani.

Mr. Hashim Al-Zahrani.

Mr. Saad Al-Aamri.

III. Presentations

o “Islanding Scheme Enhancement: Technology and Methodology “

A brief presentation was presented by Mr. Miguel Aguiar, Saudi Aramco,


o " Power Quality Incidents Record and Discussion"

A brief presentation about the incident records of “Dammam Area Partial

Blackout during 26 June 2013” was presented by Mr. Abdullah Al-

Shehri, National Grid SA, followed by group discussion

o "S. Aramco & SABIC Disturbances List"

A brief presentation was presented Mr. Saad Al-Aamri, National Grid

SA, followed by group discussion

IV. Next PQC Meeting Location

o The next meeting will be on 19th

December 2013, at Makkah.

o ECRA and KACST shall decide the host for the next meeting and the

meeting venue


9

4.4 PQC Achievements – 4th Meeting


The meeting started at 09:30, PQC Vice Chairman Mr. Hussain Al-Abbad, SABIC, the

meeting chairman, started the meeting by welcoming all attendees and thanking them for

attending the Fourth Power Quality Committee (PQC) meeting, 2013. Then, PQC members

reviewed the meeting agenda and the following were discussed:



o Suggest names of international experts as speakers in coming 2014 PQ

workshop as well as to introduce advanced PQ training course:

Dr. Aymen Al-Abduljabbar and Dr. Mahmoud Kassas are searching and

talked with a group of experts in the Power Quality discipline to

participate in 2014 PQ workshop as well as to deliver advanced training

course before that.

Dr. Aymen Al-Abduljabbar and Dr. Mahmoud Kassas informed the

group about the negotiations with South African and Belgium Power

Quality engineers who are experts in the field of PQ standardizations &

regulation and impact of renewable energy resources on PQ.

Mr. Bander Mutwali, KACARE, informed the group that they can

capitalize on KACARE’s ongoing project “studying the impact of

introducing Sustainable Energy to the Saudi Grid” to serve the need

regarding the PQ training course and workshop. Hosting and sponsoring

the event, is based on management approval.

Mr. Bander Mutwali shall coordinate with Dr. Aymen Al-Abduljabbar

and Dr. Mahmoud Kassas to meet KACARE’s consultant or discuss the

requirements of PQC for 2014 PQ workshop and training course.

Dr. Aymen Al-Abduljabbar and Dr. Mahmoud Kassas shall select PQ

experts or candidates’ speakers who meet PQC requirements to

participate in 2014 PQ workshop and deliver advanced training course

before that.

o Prepare draft for the structure and the outline of 2014 PQ Training Courses

and 2014 PQ Workshop, and distribute among the PQC members for

review:

Dr. Mahmoud Kassas distributed among the attendance the outline of

2014 PQ workshop proposed for discussion during the meeting.

Date : Thursday, 19-12-2013

Time : 09:30 AM - 01:00 PM

Venue : Makkah


10

The group agreed that to put NO specific theme for 2014 PQ workshop

however Impact of Integrating Renewable Energy Sources on the Power

Quality and Solutions shall be the main topic in the intended workshop.

PQC agreed that, the date of 2014 PQ workshop is 20 March 2014 and

timing is 08:00 – 13:00. The training course will be conducted for three

days from 17-19, March 2014.

KACARE shall present during 2014 PQ workshop Introduction about

KACARE.

PQC recommended that topic about European/USA experience and

practices about the integration of renewable energy resources and their

impact on PQ & the solutions to be presented in 2014 PQ workshop by

the selected speakers.

PQC recommended that the Distribution Code Review Panel shall

introduce short presentation in 2014 PQ workshop about the Power

Quality standards and regulation contained in the Distribution Code.

All Members of PQC shall propose and provide topics related to Power

Quality for presenting in 2014 PQ Workshop and the topics should be

according to the functions of their Organization.

The organizing committee designated for 2014 PQ workshop will decide

and chose the appropriate topics for 2014 PQ workshop after receiving

all proposed topics from PQC members.

Based on the topics that will be selected, the presentation shall be

prepared and submitted to the organizing committee timely by the main

members of PQC and the Quality Assurance of the presentation content

and result will be their responsibility.

PQC recommended that SEC and National Grid SA shall present in 2014

PQ workshop about Benefits on PQ that will be realized from changing

the voltage from 220/127 Volts to 230/400 Volts.

o Prepare main points, extracted from the PQC charter, and send them to the

PQC members to get respective opinions and ideas for discussion in the

next meeting:

Mr. Saad Al-Aamri has prepared before the meeting the requested main

points that depicting the PQC charter and sent to the members for

review and perusal.

II. Discuss the revising of PQC Charter/Manual

o Discuss the revising of the PQC charter postponed to next year, 2014, ahead

the 2nd meeting by one day, fully dedicated to revise the PQC charter.

III. Presentations

o "Power Quality of Smart Grid for Power Distribution Network "

A brief presentation was presented by Dr. Mohamed Smiai, KASCT,



11

o " Network Reliability Improvement Plan"

A brief presentation was presented by Mr. Shareef Al-Barrak, ECRA,


IV. Other Issues.

o The attendance agreed on the commitment from each entity that is member

of PQC on the number of the engineers who will register in 2014 PQ training

course. The targeted number of participants is 20 - 25.

V. Next PQC Meetings Location

o The program of PQC meetings during 2014 shall be prepared by Mr. Saad

Al-Aamri as agreed during the meeting and be sent to PQC members.

o The next meeting will be as following:

Meeting # Meeting Date Host Location

1 Mar 06, 2014 National Grid SA Riyadh




5 Nov 27, 2014 To be Identified in

the 3rd

meeting Makkah


12

5. FOLLOW UP THE 2012 PQC RECOMMENDATIONS

One of the main PQC objectives is to follow recommendations that already assigned in the

previous PQC meetings by the committee members (PQC 2012 Recommendations).

Following are the 2012 PQC recommendations and their implementation status:

No. Recommendation Statement Action Taken

1 PQC shall undertake all efforts to conduct the PQ Training Course and

Workshop each year. Done

2 Sending invitations to SWCC and MARAFIQ for sending

representatives to PQC meetings. Done

3 Presentation on power quality related topics shall be done by the host

of each meeting. Done

4 Presenting a quarterly presentation during the meetings about the

disturbances that affected S. Armco and SABIC. Done

5

S. Aramco & SABIC shall select some disturbance incidents before a

meeting and inform National Grid SA PQC members. And then

National Grid SA members will invite the concerned departments for

discussion within that PQC meeting accordingly.

-

6 Add analysis & statistics to each presentation of the disturbances list

that affected S. Aramco & SABIC. Done

7 Inviting speakers to the coming PQ workshops from non PQC

members. Done

8

Inviting international experts from overseas countries to provide

training sessions before the day of the PQ workshop and as speakers

in the PQ workshop. Done

9

Higher studies students from the universities shall be invited to

present PQ relevant topics in the PQC meetings and the PQ

workshops. Done

10

Sending invitations to entities that are non-Power Quality Committee

members for participation in the coming 2013 PQ Workshop by

technical papers and attendance. Done

11 PQC members shall discuss during the 4

th meeting of each year the

contents and the formatting of the annual report. Done


13

6. 2013 BULK CUSTOMERS DISTURBANCES

6.1 Disturbance Records – Trend Data

During the year of 2013, PQC reported (51) fault incidents that having major effects upon

the operation of Saudi Aramco & SABIC industrial bulk customers. The major effects

were recorded in Saudi Aramco where 98.0 % of the total disturbances introduce

significant effects on Saudi Aramco operating systems.

Figure (6.1) shows numbers of disturbance records reported by each of the two industrial

customers (Saudi Aramco and SABIC) while, for comparison, Figure (6.2) shows number

of disturbances that have been recorded within last three years.

Figure 6.1: 2013 Total Number of Disturbances Affected Saudi Aramco & SABIC

Figure 6.2: Number of Disturbances Affected Saudi Aramco & SABIC 2010-2013

S.ARAMCO

SABIC

42 41

50 50

15

8 7

2

0

10

20

30

40

50

60

2010 2011 2012 2013

No

. of

Dis

urb

ance

s

ARAMCO SABIC

%Parties

to

Transmission

Incidents

Total

Transmission

Dist.

No. of

Dist. Affected

Customer

3.00 %

1636

50 ARAMCO

0.12 % 02 SABIC

52 Total


14

6.2 Disturbance Records – Causes

The potential of disturbances could be resulted from number of basic causes that may

include Weather Related Conditions, Equipment Failure, Human Errors, Mal-Operation,

System or/and Equipment Deficiency (weakness of the supplying system), and

Miscellaneous. Figures 6.3 and 6.4 show the distribution of disturbances causes and their

percentage parties that effected each of the industrial companies (Saudi Aramco and

SABIC). Figures 6.5 and 6.6 show the monthly distribution of disturbances causes that

effected Saudi Aramco and SABC respectively.

Results obtained from cause of disturbances representing figures indicate that, among the

different cause of interruption classes, the Weather Related class is the major cause which

has significant effects upon system operation of Saudi Aramco and Equipment Failure

class is the major cause upon system operation of SABIC. The obtained results showed

that 84.0% of the total Saudi Aramco disturbances are due to Weather Related where

SABIC related disturbances were just two interruptions, the first caused by Equipment

failure class and the other one by Public and Other impacts. The highest number of

incidents that effected Saudi Aramco occurred during April.

On the other hand, the Equipment Failure class is the second major cause in Saudi

Aramco. The obtained results showed that 6.0% of the total Saudi Aramco disturbances

are due to Equipment Failure.

Also, Miscellaneous as a third cause of disturbance upon Saudi Aramco where it records

8% of the total Saudi Aramco disturbances.

Figure 6.3: 2013 Causes of Disturbances affected Saudi Aramco

6%

0%

4%

0%

0% 2%

2% 2%

84%

Equipment Failure Human Error

Miscellaneous Mal Operation

System Deficiency Protection Problem Related

Bulk Customer Impact Public & Others Impact

Weather Related


15

Figure 6.4: 2013 Causes of Disturbance affected SABIC

Figure 6.5: 2013 Monthly trend of Disturbances and their Causes –Saudi Aramco

50%

0%

0% 0% 0% 0%

50%

0% 0%

Equipment Failure Human Error(National Grid) SAMiscellaneous Mal OperationProtection Problem Related Bulk Customer ImpactPublic & Others Impact System DeficiencyWeather Related

0

2

4

6

8

10

12

14

16

18

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

EF HE Mis MO SD BCI PPR POI WR 2013 Total


16

Figure 6.6: 2013 Monthly trend of Disturbances and their Causes –SABIC

6.3 Disturbance Records – Voltage Levels

The reliability / Availability of the supplying system provided by National Grid SA should

also be taken in considerations when evaluating National Grid SA – Customers nature of

disturbances. Means of supplying systems provided by National Grid SA to the major bulk

customers (Saudi Aramco and SABIC) include different kV transmission levels (380, 230,

132, and 115 kV levels).

Table 6.1 shows the 2013 records of disturbances and the related voltage levels. As it can

be seen from the table, the majority of the fault incidents that affect the operation system

in Saudi Aramco are due to disturbances within the 115 kV supplying transmission

systems (96% of the interruptions are due to 115 kV faults). On the other hand, all of the

SABIC disturbances are due to faults within the 230 kV transmission systems (100 % of

the interruptions are due to 230 kV faults). See the below table 6.1 and figures (6.7 and

6.8). Table 6.1: 2013 Disturbance Records – Related Voltage Levels

Bulk Customers Supplying

kV Levels

Number of

Interruptions Total Interruptions

SAUDI ARAMCO

230 kV 02 (4.0%) 50

115 kV 48 (96.0%)

SABIC 230 kV 2 (100.0%) 02

0

0.2

0.4

0.6

0.8

1

1.2

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

EF HE Mis MO SD WR 2013 Total


17

Figure 6.7: 2013 Percentage Parties of Voltage Levels Interruptions Affected Saudi Aramco

Figure 6.8: 2013 Percentage Parties of Voltage Levels Interruptions Affected SABIC

6.4 Disturbance Records – Locations

Defining locations that disturbances were originate is another aspect to be taken in

consideration when analyzing disturbance records. This may help in building predictive or

defense actions such as increasing maintenance processes and inspection tests at the

interrupted locations that may result in decreasing the possibility of disturbances re-

occurrences.

0% 4%

0%

96%

380 kV Transmission Interruptions 230 kV Transmission Interruptions

132 kV Transmission Interruptions 115 kV Transmission Interruptions

0%

100%

0% 0%

380kV Transmission Interruptions 230kV Transmission Interruptions

132kV Transmission Interruptions 115kV Transmission Interruptions


18

Among the different disturbance locations, the highest interruption frequency of

occurrence that effect Saudi Aramco was reported by EOA-South S/Ss (Shedgum, Ain

Dar, Uthmaniyah, Hawiyah and Mahasen) where 76% of the total effected disturbances

were originated from these EOA- South Area S/Ss. Moreover, significant 24% of the

total effected disturbances were originated from these EOA- North Area S/Ss (Safaniyah,

Khursaniyah, Berri, Juaymah, Qatif, Ghunan and Abu Ali). On the other hand, Jubail

Area S/Ss, and Ghunan S/Ss are the main severe disturbance locations affected SABIC

where 50 % of the total disturbances were originated from each.

Tables (6.2 and 6.3) show lists of disturbances locations that affect Saudi Aramco as well

as SABIC facilities while figures 6.9 and 6.10 indicate for the distribution of the

percentage parties.

Disturbanc

e Location

No. of

Disturbances %

Jubail 1 50%

Ghunan 1 50%

Total 2 100%

Disturbance

Location

No. of

Disturbances %

Safaniyah 1 2%

Khursaniyah 1 2%

Berri 1 2%

Juaymah 6 12%

Abu Ali 1 2%

Shedgum 4 8%

Ain Dar 12 24%

Uthmaniyah 16 32%

Hawiyah 5 10%

Mahasen 1 2%

Ghunan 1 2%

Qatif 1 2%

Total 50 100%

Table 6.3: 2013 Disturbance Locations

Affected SABIC

Table 6.2: 2013 Disturbance Locations

Affected Saudi Aramco


19

Figure 6.9: 2013 Percentage Parties of Disturbance Locations – Saudi Aramco

Figure 6.10: 2013 Percentage Parties of Disturbance Locations – SABIC

8%

24%

32%

10%

2%

0%

5%

10%

15%

20%

25%

30%

35%%

Of

Dis

turb

an

ce

Re

co

rds

Disturbance Locations EOA - North Area

EOA - South Area

50% 50%

0%

10%

20%

30%

40%

50%

60%

Jubail Ghunan

% O

f D

sit

urb

an

ce

Rec

ord

s

Disturbance Locations


20

6.5 Key Performance Indicators – KPIs

The Key Performance indices (KPIs) are universally used to evaluate the performance of a

power system and its component units. They are the basic management tools serving to

identify potential system weaknesses and improvement needs.

The performance indices empower the concerned organizations for active participation in

the planning process and undertaking timely corrective measures for necessary

rectifications and system improvement actions, eventually leading to accomplishing a

better customer service target.

Customer Average Interruption Duration Index (CAIDI) and Voltage Dip (V.D), KPIs are

considered and analyzed for Saudi Aramco and SABIC for the year 2013.

6.5.1 Customer Average Interruption Duration Index

The Customer Average Interruption Duration Index (CAIDI) is a reliability index used

by electric power utilities. It is related to the duration of the interruptions when the

supply is off and the number of the experienced interruption incidents. CAIDI is

measured in minutes according to the following formula.

𝑪𝑨𝑰𝑫𝑰 =𝑺𝒖𝒎 𝒐𝒇 𝒂𝒍𝒍 𝒊𝒏𝒕𝒆𝒓𝒓𝒖𝒑𝒕𝒊𝒐𝒏 𝒅𝒖𝒓𝒂𝒕𝒊𝒐𝒏𝒔

𝑻𝒐𝒕𝒂𝒍 𝒏𝒖𝒎𝒃𝒆𝒓 𝒐𝒇 𝒊𝒏𝒕𝒆𝒓𝒓𝒖𝒑𝒕𝒊𝒐𝒏 𝒊𝒏𝒄𝒊𝒅𝒆𝒏𝒕𝒔

Customer Average Interruption Duration Index for the Saudi Aramco and SABIC is

presented in figure 6.13 for 2010-2013.

Figure 6.13: 2013 Percentage of CAIDI for S. Aramco & SABIC

113.24

100.44

62.26 59.34

7.13 15.13

31.14

3

0

20

40

60

80

100

120

2010 2011 2012 2013

S. Aramco SABIC


21

6.5.2 Voltage Dip - V.D

Voltage dip is reduction in voltage, 10% to 99% of nominal, typical lasting from cycles

to seconds. Voltage dips are caused by abrupt increase in loads such as faults, motor

starting, the furnaces turning on, or they are caused by abrupt increase in source

impedance caused by interruption elements.

Number of voltage dips that effected Saudi Aramco and SABIC are shown in figure 6.14,

2010-2013.

Figure 6.14: 2013 Voltage Dip interruptions for S. Aramco and SABIC

1

4

2

3

2

1

4

1

0

1

2

3

4

5

2010 2011 2012 2013

Saudi Aramco SABIC


22

7. CONCLUSIONS

During the 2013 four meetings have been assigned by the PQC, the following conclusions

have been drawn:

Official invitations to SWCC & MARAFIQ are sent to send representatives to

PQC meeting.

Valuable information, technical data, and unified procedures related to PQ issues

have been exchanged between all PQC members.

PQC members discussed during the 4th

meeting of each year the contents and the

formatting of the annual report.

Saudi Aramco and SABIC selected the most affected disturbance incidents for

presenting and discussion during the meetings.

A quarterly disturbances report was done periodically for discussion by PQC

members during the meetings.

The group set the year agenda during the last meeting each year.

During 2013, PQC conducted 2013 PQ workshop and has prepared for 2014 PQ

workshop.

PQ related experiences have been demonstrated throughout successful

presentations as following:

a- "National Grid SA and SEC preparation for next summer", by National

Grid SA.

b- "S. Aramco & SABIC Disturbances List", by National Grid SA.

c- " Voltage Dips Impact and Mitigation to Petrochemical Industries-Case

study”, by SABIC.

d- “Islanding Scheme Enhancement: Technology and Methodology”, by

Saudi Aramco.

e- " Power Quality Incidents Record and Discussion ", by National Grid SA.

f- "Power Quality of Smart Grid for Power Distribution Network ", by

KASCT.

g- "Network Reliability Improvement Plan ", by ECRA.

Recommendations that already assigned in the last PQC report (2012 – PQC

report) have been followed by the PQC. The most significant actions taken are:

a. Presentation on power quality related topics shall be done by the host of

each meeting.

b. Inviting speakers to the coming PQ workshops from non PQC members.

c. Conducting presentations by PQC members at the universities for the

students to enhance PQ awareness.


23

d. Sending invitations to entities that are non-Power Quality Committee

members for participation in the coming 2013 PQ Workshop by technical

papers and attendance.

Records of the 2013 bulk customers' disturbances have been discussed and

analyzed by the PQC. The analysis of the records reveal that:

a- PQC reported (51) fault incidents that having major effects upon the

operation of Saudi Aramco & SABIC industrial bulk customers. The

major effects were recorded in Saudi Aramco where (96.2%) of the total

disturbances introduce significant effects on Saudi Aramco operating

systems.

b- Weather Related class is the main cause of Saudi Aramco Disturbances

(84.0%) while SABIC related disturbances were just two interruptions,

the first caused by Equipment failure class and the other one by Public

and Other impacts.

c- Majority of the fault incidents that affect the operation process in Saudi

Aramco are due to disturbances within the 115 kV supplying

transmission systems, 96.0% of the total disturbances. While 100.0% of

the disturbances that affect SABIC are due to faults with the 230kV

supplying transmission system.

8. 2013 PQC RECOMMENDATIONS

Following are the 2013 PQC recommendations:

1. PQC shall undertake all efforts to conduct the PQ workshop each year.

2. PQC shall conduct two Power Quality Training Courses: Basics & Advanced.

3. Sending invitations to SWCC, Marafiq and KA-CARE for sending representatives

to PQC meetings.

4. Presentation on power quality related topics shall be done by the host of each

meeting.

5. PQC members should share experience and present in each meeting case study or

records of PQ incidents.

6. Presenting a quarterly presentation during the meetings about the disturbances that

affected S. Aramco and SABIC.

7. Constitute committee from PQC members responsible for organizational and

technical aspects for preparation and organizing of the annual Power Quality

workshop and training courses.

8. Members shall revise the PQC charter/manual and make assessment and gap

analysis.

9. Inviting international experts from overseas countries to provide training sessions

before the day of the PQ workshop and as speakers in the PQ workshop.

10. The manufacturers and vendors shall be invited to attend and participate in the PQ

annual workshop.


24

11. Inviting speakers to the coming PQ workshops from non PQC members.

12. Higher studies students from the universities shall be invited to present PQ

relevant topics in the PQC meetings and the PQ workshops.

13. Sending invitations to entities that are non-Power Quality Committee members for

participation in the coming the PQ Workshop by technical papers or attendance.

14. PQC recommended that topic about European/USA experience and practices about

the integration of renewable energy resources and their impact on PQ & the solutions

to be presented in 2014 PQ workshop by the selected speakers.

15. PQC recommended that the Distribution Code Review Panel shall introduce short

presentation in 2014 PQ workshop about the Power Quality standards and regulation

contained in the Distribution Code.

16. PQC members shall discuss during the 4th meeting of each year the contents and

the formatting of the annual report.

9. 2014 PQC PLAN

Promote ideas of P.Q.

Maintain and activate the link between industry and Academia.

Follow up the 2013 PQC recommendations.

Prepare for the 2014 PQC annual report of achievement and shortcoming.

Conducting PQ Workshop on 2014.

Continue exchanging Power Quality data and information between PQC members.

Following represent the 2014 PQC scheduled meeting:

Meeting No. Date Host Location

1 Mar 06, 2014 National Grid SA Riyadh




5 Nov 27, 2014 To be Identified in

the 3rd

meeting Makkah


25

Appendix (A)


26

PQC Members

Name Affiliate

Laith A. Al-Bassam National Grid SA

(Chairman)

Hussain AL-Abbad SABIC

(Vice Chairman)

Saad Al-Aamri National Grid SA

(Secretary)

Abdulrahman Al-Shabnan National Grid SA

(Main member)

Abdulaziz Al-Zahrani SABIC

(Main member)

Abdullah Al-Shehri National Grid SA

(Main member)

Ali Al-Qahtani Saudi Aramco

(Main Member)

Bander Mutwali KACARE

(Main member)

Fayez Al-AJabri ECRA

(Main member)

Hamed Al-Saggaf SEC

(Main member)

Hashim Al-Zahrani Saudi Aramco

(Main member)

Khaled Al-Ghamdi SEC

(Main member)

Dr. Abdullah Al-Abbas SEC

(Main member)

Dr. Ayman Al-Abduljabbar KACST

(Main member)

Dr. Fahad Abu-Mouti KACARE

(Main member)

Dr. Mohamed Smiai KACST

(Main member)

Dr. Mahmoud Kassas KFUPM

(Main member)

Dr. Othman Al-Natheer KACST

(Main member)

Mazen Al-Qurtas SEC

(Main member)

Sameer Sonbol National Grid SA (Main member)

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