Automatic load sharing of Transformers using Fuzzy Logic in a distributed generation environment

Abstract

The transformer is very expensive and large equipment of power system. It operates for 24 hours of a day and feeds the load. Sometimes the situation may occur when the load on the transformer is suddenly increased above its rated capacity because of the growing demands of energy. When this situation occurs, the transformer will be overloaded and overheated and may damage the insulation of transformer resulting in interruption of supply. The best solution to avoid the overloading is to operate the number of transformers in parallel. In the suggested approach auxiliary transformer will share the load when the load on the main transformer will rise above its rated capacity. The main aim of the work is also to provide an un-interrupted power supply to the energy consumers (priority based). Fuzzy logic is used for parallel operation of transformers. The problem of interruption of supply due to transformer overloading or overheating can be avoided.