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.”
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