Open Access

ARTICLE

T-Shaped Transmission Line Fault Location Based on Phase-Angle Jump Checking

by Jia’an Xie^1,*, Yurong Wang², Guobin Jin³, Mucheng Wu¹

1 Foshan Power Supply Bureau, Guangdong Power Grid Co., Ltd., Foshan, 528000, China
2 School of Electrical Engineering, Southeast University, Nanjing, 210018, China
3 School of Electrical Engineering, Northeast Electric Power University, Jilin, 132012, China

* Corresponding Author: Jia’an Xie. Email:

Energy Engineering 2022, 119(5), 1797-1809. https://doi.org/10.32604/ee.2022.020344

Received 17 November 2021; Accepted 08 April 2022; Issue published 21 July 2022

Abstract

In order to effectively solve the dead-zone and low-precision of T-shaped transmission line fault location, a new T-shaped transmission line fault location algorithm based on phase-angle jump checking is proposed in this paper. Firstly, the 3-terminal synchronous fundamental positive sequence voltage and current phasors are extracted and substituted into the fault branch distance function to realize the selection of fault branch when the fault occurs; Secondly, use the condition of the fundamental positive sequence voltage phasor at the fault point is equal to calculate all roots (including real root and virtual roots); Finally, the phase-angle jump check function is used for checking calculation, and then the only real root can be determined as the actual fault distance, thereby achieving the purpose of high-precision fault location. MATLAB simulation results show that the proposed new algorithm is feasible and effective with high fault location accuracy and good versatility.

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Keywords

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