Single terminal traveling wave fault location based on fault location algorithm integrating MMG with correlation function

Abstract

To remedy such defects as low reliability and unsatisfied accuracy of fault location by traveling wave correlation algorithm (TWCA), a single terminal traveling wave fault location based on fault location algorithm integrating MMG with correlation function is proposed. The surges caused by traveling wave are separated by a new type of MMG transform. Traveling wave surges are held to possess accurate length by means of a variable structuring element in the new MMG transform. By the next, the multi-layer correlation analysis is performed to implement fault location using the traveling wave surges of transmission line. The initial time-window length of multiple time-window TWCA and the initial length of structuring element are set to be the same, and they vary in the same way of binary-diminishing. Simulation results by ATP show that the proposed algorithm is suitable to various fault distances and can offer higher fault location reliability and accuracy.