Design and Fabrication of Generator Transformer Cooling System

In power transformer the probability of fault is undoubtedly more and hence automatic protection is absolutely necessary. Power transformers are used in power station to step-up or step-down voltages according to the affordable level with enormous power transfer rate. Faults that probably occur in transformers are open-circuits, overheating, winding short circuits .Hence it is very important to check the present temperature condition of transformer and to provide cooling system into service in time .At present generator transformers are being monitored by traditional relay logic system .To make the system compact we have made an attempt in introducing software solution with the help of PIC based Protection and cooling system control design. This system enables us to control and monitor the cooling system in an efficient manner PIC Microcontrollers (PIC) are being introduced to overcome the old system that is computer connectivity, on line edition of program and it also reduces the trouble shooting time. PIC is used to control cooling fans (forced air cooling), oil pump series (forced oil cooling) and to monitor oil flow and oil level and also to detect the faults. This has made the system to be very compact and efficient in operation.