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2011

ANFIS based flux-current differential protection scheme for power transformer protection

Author:M.Geethanjali and G.Sundari

Abstract:
This paper presents a new approach to differential protection for power transformer by using ANFIS approach. The proposed method was trained and tested with data obtained from PSCAD simulation of a power system under different operating conditions. The simulation results show that this algorithm is very good to recognize the various fault types in power transformers. Using the ANFIS approach, the accuracy and speed of operation of flux-current differential relaying scheme is significantly improved while compared with conventional current differential relaying scheme. The proposed method has an outstanding advantage that it can eliminate the load tap changer error meanwhile in operation and there by sensitivity of the relay is improved.