On Load Transformer Tap Changer System.

Abstract

Abstract

After considering the environmental hazards and recent developments in the renewable energy sector. The penetration of Distributed Generation and varying load at the consumer side has its own demerits of maintaining the constant output voltage at the consumer side. Since voltage is one of the most important parameters for the control of electric power system, hence it needs to be maintained at least near to its constant value. The method involves in maintaining the output voltage within the acceptable limit at the consumer side is by Tap Changing mechanism associated with the distributing transformer. This project work deals with the replacement of conventional Elector - mechanical way of On Load Tap changers with the Solid-State Tap Changers for voltage regulation. With fully electronic control of tap changing the problems associated with the mechanical On Load tap changing which includes excessive conduction losses, slow operation and arcing in the diverter switch have been properly rectified. It also explains the sequential switching of the Thyristor to regulate the voltage, based on the voltage feedback taken from the output side. By adopting Solid State tap changers in the distribution transformers fast and reliable operation is ensured and also encourages the proliferation of Distribution Generation.