1. Dharmesh Sisara &
Rakesh Sisara

2. LOAD
DISPATCH
CENTER

3.  WHAT IS LOAD DISPATCH CENTER?
THE LOAD CENTER IS THE CENTER WHICH PERFORMS
DISPATCH AND CONTROL FUNCTIONS TO ENSURE
CONTINUTIY AND QUALITY OF POWER SUPPLY TO THE
CONSUMERS. ALL THE MODERN LOAD DISPATCH CENTER
USE THE SCADA SYSTEM (SUPERVISORY CONTROL AND
DATA ACQUISITION SYSTEM) FOR MONITORING AND
COLLECTING THE SYSTEM DATA. THE FUNCTIONS OF THE
LOAD DISAPTCH CENTERS INCLUDE THE SUPERVISORY OF
THE SYSTEM ELEMENTS LIKE GENERAOTR, TRANSFORMER,
TRANSMISSION LINE ETC. OF THE INTERCONNECTED
SYSTEM.
THE LOAD DISPATCH CENTER ALSO PERFORMS THE
SECURITY AND ECONOMIC OPERATION OF THE POWER
SYSTEM. IT IS ALSO USED TO RESTORE THE NORMAL
FUNCTIONIG OF THE POWER LINE AS EARLY AS POSSIBLE
AFTER THE OCCURRENCE OF THE FAULT.

4. GENERALIZED BLOCK DIAGRAM OF LOAD DISPATCH CENTER:

5.  FUNCTION OF LOAD DISPATCH CENTER:
1. DATA PROCESSING AND SYSTEM STUDIES.
2. LOAD FORECASTING FOR A WORKING DAY & HOLIDAY AND ANALYSIS
OF SYSTEM BEHAVIOUR.
3. CHECKING STATION WISE OUTAGE POSITION EVERY MORNING AT 6
A.M. TO ASSESS THE GENERATION AVAILABITIY.
4. QUALITY MAINTAINANCE OF SUPPLY TO THE CONSUMER BY WAY OF
IMPROVED VOLTAGE REGULATION.
5. LOAD SCHEDULING AND ECONOMIC OPERATION.
6. INTEGRATION WITH REGIONAL LOAD DISPATCH CENTERS.
7. CO-ORDINATION WITH NEIGHBOR GRIDS.
8. MAINTAINANCE OF GRID DISCIPLINE.
9. SYSTEM SECURITY, SCADA MANAGEMENT AND COMMUNICATION.
10. CONSUMER INTERACTION AND PUBLIC RELATION.

6. 11. RECORDING FREQUENCY CONTINIOSLY.
12. MONITORING OF SETTING OF UNDER FREQUENCY RELAYS AND THEIR
OPERATION.
13. RECORDING TIE FLOWS AT EVERY HALF HOUR.
14. ASSESING SURPLUS POWER IN REGION AND MAKING IT AVAILABLE TO
OTHER AREAS.
15. MONITORING OF STATION WISE GENERATION, STATION, WISE PEAK
DEMAND.
16. RECORDING OF TRIPPING OF TRANSMISSION LINES.

7.  EQUIPMENT USED IN LOAD DISPATCH CENTER:
1. COMPUTER SYSTEM
2. CONTROL DESK
3. ANNUNCIATION PANELS
4. MIMIC DIAGRAM
5. COMMUNICATION
6. TELEMETRY
OTHER EQUIPMENT USED IN THE LDC ARE:
I. DIESEL GENERATOR SET
II. HEATING, VENTILATION AND AIR-CONDITIONING SYSTEM
III. DC BATTERY ROOM
IV. HARMONIC FREE AC SUPPLY
V. UPS

8. THANK
YOU