Power Transformer Protection Based on Fuzzy Logic System

Abstract

AbstractThe power transformer requires continuous monitoring along with fast protection, as it is important, essential, and even expensive equipment for the power system. Various methods are being used to protection of this electrical equipment. The most commonly used technique for the protection of the transformer is percentage differential logic, as it can easily provide discrimination between its operating conditions and different internal faults. Unfortunately, few operating conditions of power transformer significantly influence the differential logic behavior, so the stability of power system is also affected. Here, it has been proposed to develop an algorithm which enhances the protection of power transformer by using fuzzy logic system and Clarke’s transformation. Using MATLAB software, a modeling of electrical system was done to simulate the fault situations along with operational conditions required to test the algorithm being developed.KeywordsDifferential protectionClarke’s transformEnergizationFuzzy logic