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UNIFIED LOAD DESPATCH SCHEME IN THE SOUTHERN REGION

Published byBarrie Benson Modified over 6 years ago

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Presentation on theme: "UNIFIED LOAD DESPATCH SCHEME IN THE SOUTHERN REGION"— Presentation transcript:

1 UNIFIED LOAD DESPATCH SCHEME IN THE SOUTHERN REGION
AN OVERVIEW

2 Unified Grid Operation
National Level NLDC Regional Level ERLDC WRLDC NRLDC SRLDC NERLDC 5 Nos. State HQ Level 32 Nos. SLDC Group / Distt Level 51 Nos. SUB LDC Plant / Sub- Station Level 1160 Nos. RTU

3 Hierarchy of The ULDC Scheme in Southern Region
DIRECTLY REPORTING 24 RTUs RLDC,Bangalore 14 RTUs SCC, Pondy CPCC 30 RTUs 87 RTUs 101 RTUs 64RTUs Hyderabad Kalamassery Chennai Bangalore Andhra Kerala Tamilnadu Karnataka Bangalore Hyderabad Kalam’erry Chennai Lingusugur Cuddapah Kannur Erode Warangal Trivandrum Madurai Hubli UNIFIEDUNIFIED Vijayawada

4 Karnataka Andhra Pradesh UT of Pondy Kerala Tamilnadu
Information Flow to Control Centres Ramagundam Karnataka Warangal Satellite Ghanapur HYDERABAD Vijayawada Andhra Pradesh Hubli Davangeree MW Link Chinkampalli Bangalore FO Link State owneed Link CHENNAI Sub-LDC SLDC Pondy Kannur-B Erode RCLDC UT of Pondy Kerala KALAMASSERY Tamilnadu Madurai Vydyuthi Bhavanam

5 Communication Channel for Information flow
RLDC Wide Band Commn SLDC SLDC Wide Band Commn (MW / FO) Sub-LDC Sub-LDC Wide Band / PLCC Commn RTU RTU RTU

6 EXISTING MICROWAVE LINK
HINDUPUR EXISTING MICROWAVE LINK

7 COMPLEXITY OF MONITORING Annual Inter-Regional
Integrated Opn of Ten Power Utilities Annual Inter-Regional Energy Transfer ≈10,000MU Generators –Hydro, Thermal,Gas/IPP 422 nos. 30,000 POINTS Active Power, Reactive Power, Voltage, Frequency, Transformer Tap Position, Circuit Breaker Position, Isolator Position etc Transmission Network 400/220kV ≈ Ckm Installed Capacity ≈32800 MW Transformation Capacity ≈ 45000 MVA Transformers (220kV and above) 480 nos. Dynamic Grid Conditions

8 Scan Cycles All the analog data are scanned every 10/12 seconds
Status information are reported by exception All status information are scanned for integrity check every 10 minutes The SOE datas are time stamped at 1 ms resolution Time synchronisation is done every 10 minutes

9 SRLDC ARCHITECTURE SLDC
WORK STATION1 WORK STATION2 WORK STATION3 WORK STATION4 WORK STATION5 LAN 2 LAN 1 SLDC FEP1 FEP2 ROUTER ROUTER SCADA/ AGC SERVER DATA SERVER BACKUP SERVER EMS SERVER A EMS SERVER B BACK UP EMS RAID

10 RSCC, BANGALORE CONTROL CENTRE
WS01 WS02 WS03 WS04 WS05 WORK STATIONS DUAL LAN FRONT END PROCESSORS Switch WS06 WS07 DTS SYSTEM AP-07 AP-08 FEP-1 FEP-2 DTS SERVER DTS SERVER AP-03 BACKUP SERVER APPLICATION PROCESSOR RAID PNA:POWER NETWORK ANALYSIS COPS: COMPREHENSIVE OPERATION PLANNING AND SCHEDULING ICCP: INTER CONTROL CENTRE COMMUNICATION PROTOCOL RAID:- REDUNDANT ARRAY OF INDEPENDENT DISKS AP-01 AP-02 AP-04 AP-05 AP-06 SCADA AGC DATA SERVER PNA/ICCP SERVER COPS SERVER BACKUP SERVER

11 FUNCTIONS OF SCADA DATA ACQUISITION. PROCESSING OF ACQUIRED DATA.
LIMIT / STATUS MONITORING & ALARMING. NETWORK STATUS PROCESSOR. SEQUENCE OF EVENT RECORDING. INFORMATION STORAGE & RETRIEVAL. DATA EXCHANGE SUPERVISORY CONTROL.

12 Energy Management Systems / (EMS)
Supervisory Control And Data Acquisition Systems (SCADA) HIERARCHICAL LEVEL Regional LDC EMS/SCADA State LDC EMS/SCADA Sub-LDC SCADA Remote Terminal Units RTU RTU RTU RTU RTU

13 EMS FUNCTIONS PRE DISPATCH FUNCTIONS REAL TIME DISPATCH FUNCTIONS
REAL TIME NETWORK ANALYSIS POST DISPATCH FUNCTIONS

14 THANK YOU

15 Implementation through – Unified Approach
Achieved co-ordinated and phased implementation Established the facilities within same time frame Compatibility of equipment system Standardisation of Hardware and software with resulting economy in cost Optimisation of maintenance/spares of equipments

16 PRE-DISPATCH FUNCTIONS
LOAD FORECASTING HYDRO-THERMAL COORDINATION HYDRO SCHEDULING UNIT COMMITMENT INTERCHANGE SCHEDULING INTERCHANGE TRANSACTION EVALUATION INFLOW FORECASTING CURRENT OPERATING PLAN

17 REAL TIME DISPATCH FUNCTIONS
OPERATION MONITOR AUTOMATIC GENERATION CONTROL ECONOMIC DISPATCH RESERVE MONITOR LOAD SHEDDING SUPPORT PRODUCTION COST MONITORING

18 REAL-TIME NETWORK ANALYSIS FUNCTIONS
NETWORK TOPOLOGY BUS-LOAD FORECAST STATE ESTIMATION EXTERNAL MODEL LOSS SENSITIVITY REAL-TIME CONTINGENCY ANALYSIS OPTIMUM POWER FLOW

19 POST-DISPATCH FUNCTIONS
POST DISTURBANCE ANALYSIS --DISTURBANCE DATA COLLECTION --SEQUENCE OF EVENTS DATA

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