Abstrakt

Closed loop control of Generator Transformer temperature by using plc

V.Hamsapriya,P.Rokesh,G.Sathish kumar,T.Sathish kumar,K.Sathiyasekar

electro-mechanical relays and associated timers for required delay timings are being adopted in the control circuit of existing generator transformer’s forced-oil-air cooling control system, with low reliability, little protection function, uneasily extended and no communication interface. There should be no compromise in its cooling activities otherwise it may lead to a major shut-down of the power distribution or revenue loss. The way that Master- Slave Logic Controller with high reliability and versatility replaces partial unreliable contact ants and relays to modify older system is presented, and a new transformer’s forced-oil-air cooling control system is designed. Its site operation shows that the device is of high operation reliability and control accuracy, has perfect functions and notable effect of power saving. It is to be noted that revenue loss is also prevented.