Single-phase grounding fault location method based on iteration thought for double circuit transmission lines

YiMing Zhu; Huan Zhou; Xuan Gao

doi:10.1117/12.2679314

18 July 2023 Single-phase grounding fault location method based on iteration thought for double circuit transmission lines

YiMing Zhu, Huan Zhou, Xuan Gao

Author Affiliations +

Proceedings Volume 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023); 1272216 (2023) https://doi.org/10.1117/12.2679314
Event: International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 2023, Hangzhou, China

Abstract

There is strong electromagnetic coupling in DCTL (double circuit transmission lines on the same tower), especially strong zero-sequence mutual inductance, which leads to the fact that the fault location error of the single-ended single-circuit line configuration for distance protection is large. The existing method, which cannot fundamentally eliminate the influence of zero-sequence mutual inductance of adjacent lines, estimates the zero-sequence current of adjacent lines instead of collecting voltage and current of adjacent lines directly. Therefore, a single-phase grounding fault location method for DCTL that based on Newton iteration thought is proposed. This method uses Newton iteration method to improve the zero-sequence current estimation accuracy of adjacent lines, and the location of single-phase grounding fault can be calculated accurately only by using the electric quantities of single circuit line. The PSCAD/EMTDC simulation verifies the effectiveness of the method.

Citation Download Citation

YiMing Zhu, Huan Zhou, and Xuan Gao "Single-phase grounding fault location method based on iteration thought for double circuit transmission lines", Proc. SPIE 12722, Third International Conference on Mechanical, Electronics, and Electrical and Automation Control (METMS 2023), 1272216 (18 July 2023); https://doi.org/10.1117/12.2679314

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