Consultancy by :Consultancy by :Power Grid Corporation of India Ltd

POWERGRID AT A GLANCE• Central Transmission Utility of India & Operator

of RLDCs. (TSO) • One of the largest transmission utility in the world • Operating

– 47,500 ckms of EHV transmission lines – 82 EHVAC & HVDC sub-stations – 46,500 MVA transformation capacity

• Emerged as leading consultancy Organisation in Power Sector

• Catalytic Role in Power Sector Reforms • Diversified in Telecom, APDRP, Rural

Electrification

POWERGRID FUNCTIONS

TSORLDCs

CTU FUNCTIONS

Inter-stateTransmission

Services

P O W E R G R I D

LICENSEES

NON-CTU FUNCTIONS

Telecom,Consultancy,Distribution

Consultancy by POWERGRID• Rendering consultancy services to utilities like

GEB, MPSEB, Goa, CSEB, D&D, DNH, Tata Power, BSES ,WBPDCL, UPPCL, UPCL,BSEB, RRVPNL, KPTCL,GRIDCO, Malana Power, Chandigarh, ASEB, Pondicherry, MeSEB, Afghanistan, Bhutan Telecom, THPA, MOP.

• Areas of Consultancy– Transmission Lines/Sub-stations – SCADA/EMS– O&M of EHV Transmission System– APDRP,REC– Telecom– Intra-State ABT & Metering

• Consultancy for project cost of about Rs. 5000 Crores.

POWERGRID’s Expertise

• Construction and O&M of EHV Transmission System

• Grid Management• SCADA/EMS• ABT• Metering• Telecom

Development of ABT Mechanism• On site administrator for the Tariff Study in

Feb.,94 by International Consultant M/s ECC Inc., USA

• Co-ordinated the study and mooted the idea of frequency linked tariff to ECC

• Basic frame work developed• Lead role in RTFs/ NTF deliberations • ABT is a commercial mechanism linked to

frequency specially designed for Indian Grid condition

• CERC hearings with utilities• Clarifications on issues • CERC issued Order on 04.01.2000

ABT implementation– POWERGRID’s Expertise

• More than 150 presentations to– SEBs– Generators– Central / State Government– Other Utilities

• In-house development of software for – Scheduling– Energy Accounting– Time tested and proven software

• Legal issues resolved

POWERGRID’S Expertise in ABT • Only Utility having proven capability in

– Development of ABT– Implementation of ABT– Actual Operating experience

• Pioneers and leaders in ABT mechanism• Expertise to train the personnel• Experience in development and implementation of

– Scheduling Procedure– Energy Accounting

• Development of Special Energy Meters• Development of Metering Scheme• Experience in Operation of Pool Accounts for UI and

reactive Charges

Development of Energy Meters by POWERGRID

• Foreseen the requirement of a New Meter for ABT• Tailor made meter specifications for ABT tariff • Prototype development followed by field trials• Vendor Development• Main features of SEMs

– Tamper proof and low cost – Developed and manufactured indigenously– Accuracy of class 0.2– Static Meters to record energy transmittals in 15

min. time block– Reactive power measurement in pre-specified

voltage conditions• Establishment of Data Collection and Data transfer

infrastructure

WR took lead for ABT implementation

01.01.2003

Other Regions followed

01.07.200201.04.2003

01.11.200301.12.2002

ABT implemented in All Five Regions.

POWERGRID co-ordinated and

provided all infrastructure for

ABT implementation.

Pool Accounts Operated by RLDCs.

Experience in intra-State ABT implementation

• Relying on our expertise, consultancy for intra-State ABT awarded by GEB.

• Consultancy being awarded by PSEB shortly

• Other States are approaching for consultancy

Expertise in Operation of Pool Account

• RLDCs have collected and disbursed – UI Pool account : Rs. 4500 Crores– Reactive Pool Account : Rs. 53 Crores

• No discrepancies, disputes raised

• Amount disbursed within 3 days

• e-banking facilities available

Similarities between ABT at Regional Level and intra-State

level Regional ABT•Regulator- CERC•Central Sector Generators•IPPs•SEBs•SEMs •Day Ahead Scheduling by RLDCs•Weekly Settlement of regional UI•UI Pool Account•Reactive Pool A/c

Intra-State ABT•Regulator- SERC•State Sector Generators•embedded generators•Discoms•SEMs•Day Ahead Scheduling by SLDCs• Weekly Settlement of State UI•UI Pool Account•Reactive Pool A/c

WORK PLAN TIME SCHEDULE

Sl. No. Item \ Week 1st 2nd 3rd 4th 5th 6th

1 Kick off Meeting

2 Furnishing of preliminary data by MSEB

3 Report Drafting

4. Submission of draft Report

5. Discussion on Draft Report

6. Preparation of Final Report

7. Submission of Final Report

Work Plan

Providing Alternatives on Issues – Discussion of

Rationale- Choosing best Options for Maharashtra

Discussions & Presentations

To State Utilities

Kick-off Meeting

Write-ups and Comments

Study of Experiences at inter-

Regional level

Preliminary DataBy MSEB

Review of existIng commercial

arrangements among Utilities

Embedded generators etc.

Work Plan……..contd.

Preparation of Draft Report

Discussions & Presentations

To State Utilities

Comments from State Utilities

Submission of Final Report

ABT Balancing Market

• UI mechanism takes care of the deviations in an inherent way

• Price based on frequency reflecting load generation balance in the grid

• No negotiations, no bidding.

Flexible-anybody can inject or draw.

• ISO purchases balancing power and despatches

• Price of balancing power based on bids which reflect notional market conditions

• Requires Exchanges, complicated procedure and involves cost in setting up of computerised systems

• Inadvertent exch-anges priced based on frequency & price is known to all

• No gaming

• UI Pool allows frequency variation between 49.0 and 50.5 Hz.

• Complex mechanism for pricing inadvertent exchanges

• Gaming is possible

• Suitable in systems where frequency has to be maintained close to nominal

ABT Balancing Market

NORTHERN REGION

SOUTHERN REGION

EASTERN REGION

NORTH

EASTERN REGION

OPERATIONAL OPERATIONAL

TO BE COMMISSIONED BY JUNE 2005

SCADA/EMS System -ULDC

NLDC TO BE COMMISSIONED

BY DEC 2007

WESTERN REGION

TO BE COMMISSIONED BY MARCH 2006

EXISTING MSEB SLDC – KALWA TO BE INTEGRATED WITH

RSCC,MAROL USING ICCP UNDER WR ULDC

Establishment of large sized ULDC projects worth Rs.2200 Crores

Multi-vendor RTU integration Usages of variety of communication mediums Type testing, FAT/SAT Establishing system for remote operation of

EHV s/s Separate engineering department

POWERGRID EXPERTISE IN SCADA

Continuous association with leading consultants : KEMA-ECC INC, KEMA-Macro, IVO – Finland, EDF –France

Signed MOU with KEMA ECC INC ,USA Establishment of large sized ULDC projects

Complete project life cycle experience Preparation of Feasibility report Preparation of tender specifications Tender evaluation and award Design & Engineering, testing & commissioning

POWERGRID EXPERTISE IN SCADA

NEED OF SCADA FOR ABT To monitor & control the load & generation in

real time

Special energy meters provide energy & average frequency for every 15 minutes time block

Data of energy meters is generally downloaded weekly

SCADA system for energy meters telemetry

Power flows in real time

Monitor schedule & actual drawals

Provides information on generation

Reactive power management using capacitor / reactors.

Management of voltage by transformer tap adjustment

SCADA APPLICATIONS

1015Nos. RTU RTU RTU

SUB LDC SUB LDC SUB LDC

SLDC SLDC SLDC

ERLDC

WRLDC NRLDC SRLDC

NERLDC

NLDC

29 Nos.

51 Nos.

Unified Grid OperationUnified Grid Operation

5 Nos.

NationalLevel

RegionalLevel

State HQLevel

Group / Distt Level

Plant / Sub-Station Level

POWERGRID AND ABT

• Pioneers of ABT• Synonymous to each other• Only Utility with time proven track record• Capabilities in all associated systems• Expertise recognised internationally• Aware of the needs /areas of the power

utilities in the country• MSEB would be in experienced hands

Observations of FERC

– “Very impressive Load Dispatch Centre. First of its kind in the world. Quite sophisticated with data and technology in real time. You Should be proud.””

Linda k. Breathitt,

Commissioner,

FERC, Washington DC.

Observations of World Bank

– “The new tariff regime has provided significant benefits to the states, Generators and the consumers. It has helped in implementing grid discipline and its optimal and safe operation.”

– “POWERGRID has achieved a unique landmark in Northern and Southern Regions, having three hierarchical levels as against two levels being implemented worldwide.”