﻿ 线路故障测距的人工智能算法研究

线路故障测距的人工智能算法研究A Fault Locator for Transmission Line Based on Artificial Intelligent Algorithm

Abstract: Considering the transmission line with multi-branch, a dynamic fault location algorithm based on intelligent algorithm is presented in this paper. Based on the measured voltage and current at two terminals, a discrimination index is proposed by which the faulted section can be located first. After that the equivalent voltage and current at the branch node is obtained by the equivalent calculation of the healthy branches. It corrects the results of fault location method based on genetic algorithm by the way of neural network algorithm, with the ranging accuracy improved when there are faults at two terminals of transmission line. The proposed algorithm only demands the measured voltage and current on the two terminals, and inherits the advantages of fault location method based on genetic algorithm, which is independent of fault type, fault resistance at fault point, etc., the influence on ranging accuracy by line parameters deviation is greatly reduced. The proposed method is simulated by PSCAD, and the results verified the correctness and high precision of the algorithm.

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