A Study on Estimation Technique for Fault Location using Quadratic Interpolation in a Parallel Feeding AC Traction System

Abstract

-Nowadays reactance method is being used as a technique for fault location in parallel feeding AC traction power system. However, implementation of this method requires a large number of field tests(ground fault) which is a huge burden on the operators. This paper presents a new estimation technique using quadratic interpolation to reduce number of times for field test and improves the accuracy of fault location. To verify a new technique, we solve AT feeding circuit and model it using PSCAD/EMTDC. Finally this paper conducts a comparative analysis of usefulness between a new technique and real field data. 리액턴스방식을 운영하기 위해서 기본적으로 전차선로 임피던