Optimal Co-ordination of Directional overcurrent Relay Co-Ordination
Keywords:
DOCR- Directional Over-current Relay,GA- Genetic Algorithm, CGA-Continuous Genetic Algorithm, TDSTime Dial Setting, TMS- Time Multiplier SettingAbstract
Relay Coordination in main purpose is to make the network more stable and secure. The Function of
(DOCRs) is to minimize the Damage in duration of the Service interruption When Faults occur in the System. The OCR
time coordination in used ring fed distribution networks is a highly constrained optimization problem. The purpose is to
find an optimum relay setting to minimize the time of operation of relays and at the same time, to avoid the mal-operation
of relays.This paper presents continuous genetic algorithm (CGA) technique for optimum coordination of OCR in a ring
fed distribution system. Constraints are incorporated in the fitness function making use of the penalty method.Computer
programs(using MATLAB)have been developed for optimum coordination of OC relays using GA technique.