Research on EHV line protection based on innovation graph

Huaiyu Guo; Mingyu Xu; Xiaoguang Chen; Jiapeng Cui; Dan Li; Baiyue Song; Ying Gao; Chao You

doi:10.1117/12.2640133

1 August 2022 Research on EHV line protection based on innovation graph

Huaiyu Guo, Mingyu Xu, Xiaoguang Chen, Jiapeng Cui, Dan Li, Baiyue Song, Ying Gao, Chao You

Proceedings Volume 12257, 4th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2022); 122572S (2022) https://doi.org/10.1117/12.2640133
Event: 4th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2022), 2022, Guangzhou, China

Abstract

Due to the large distributed capacitance of EHV transmission line, its relay protection scheme is obviously different from the traditional method, and the existing method cannot realize the whole line speed. This paper analyzes the basic method of zero sequence current differential protection, discusses the influence of capacitor current on the current protection of EHV transmission line, and puts forward the zero sequence current innovation protection method. When the zero sequence current innovation exceeds the threshold, the starting criterion locates the fault line. This method is not affected by fault location and fault type, and improves the reliability of protection algorithm. The feasibility of the protection algorithm is verified by PSCAD simulation.

Citation Download Citation

Huaiyu Guo, Mingyu Xu, Xiaoguang Chen, Jiapeng Cui, Dan Li, Baiyue Song, Ying Gao, and Chao You "Research on EHV line protection based on innovation graph", Proc. SPIE 12257, 4th International Conference on Information Science, Electrical, and Automation Engineering (ISEAE 2022), 122572S (1 August 2022); https://doi.org/10.1117/12.2640133

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