18-04-2012, 04:58 PM
ENERGY MANAGEMENT SYSTEMS (EMS)
CP0168_04-Oct-2011_RM01.pptx (Size: 65.7 KB / Downloads: 42)
INTRODUCTION
Energy management – A process of monitoring, coordinating and controlling the generation, transmission and distribution of electrical energy.
Energy management system – A computer system which is used at ‘system control centres’ for energy management. It communicates with generating, transmission and distribution systems through SCADA systems.
ENERGY CONTROL CENTRE
A control centre where Energy Management is performed.
Monitors the information of the total system when the size of the power system increases.
Main advantages of energy contol centre are:
increases system reliability.
increases economic feasability.
FUNCTIONS
POWER SYSTEM PLANNING
for generation
for transmission and distribution.
( should aim at excess capacity than load )
UNIT COMMITMENT
constraints – spinning reserve, minimum up time, minimum down time, hydro constraints and fuel constraints.
STATE ESTIMATION
Estimates the state and based on the system monitoring data, produces best estimates of the power system state.
ECONOMIC DISPATCH
The load is distributed among the different generating units so that the total cost of the system is minimised.