Fault Location Algorithm for Incomplete Double-Circuit Transmission Lines Based on Line Segment Parameters
Wang Shoupeng1,2, Zhao Dongmei1, Shang Liqun2, Zhao Xiangzheng1
1. School of Electrical and Electronic Engineering North China Electric Power University Beijing 102206 China; 2. School of Electrical and Control Engineering Xi’an University of Science & Technology Xi’an 710054 China
Abstract：The aspects of fault location for incomplete double-circuit transmission lines have been studied in this paper. Firstly, the characteristics of the incomplete lines are analyzed. Since the traditional pseudo root identification method cannot be applied in fault location for incomplete lines, a new pseudo root identification algorithm is presented based on analyzing the existence of pseudo root. This algorithm can effectively identify pseudo roots of both fault branch and non-fault branch. Then, a fault location algorithm for incomplete double-circuit lines based on line segment parameters is proposed. The method combines fault location with fault branch identification, which can be realized within the entire line. The algorithm is featured by each terminal data without synchronization, and immune to the types of fault, fault resistance and other factors. The simulation results have verified the proposed algorithm.
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2017, Vol. 32 
