Differential protection method for EHV transmission line based on current traveling wave prediction

Zhaohui Chen; Xiaobing Ding; Mingjun Xue; Hao Zhang

doi:10.1117/12.2680594

31 May 2023 Differential protection method for EHV transmission line based on current traveling wave prediction

Zhaohui Chen, Xiaobing Ding, Mingjun Xue, Hao Zhang

Proceedings Volume 12704, Eighth International Symposium on Advances in Electrical, Electronics, and Computer Engineering (ISAEECE 2023); 127041K (2023) https://doi.org/10.1117/12.2680594
Event: 8th International Symposium on Advances in Electrical, Electronics and Computer Engineering (ISAEECE 2023), 2023, Hangzhou, China

Abstract

At present, the EHV transmission system in China has entered a new stage of large-scale construction, which is different from the general EHV transmission lines. The distributed current in the EHV transmission lines has increased substantially. To realize the overall balance of long-distance transmission in the power grid, a differential protection method for EHV transmission lines based on current traveling wave prediction is proposed. The fault current traveling wave of the EHV transmission line is predicted. The fault current traveling wave section is distinguished, and different schemes are selected to realize the traveling wave differential protection for internal and external faults. The simulation results show that the proposed method is reliable and sensitive for the protection of UHV transmission lines, and has certain practical value for ensuring the stable operation of the smart grid.

Citation Download Citation

Zhaohui Chen, Xiaobing Ding, Mingjun Xue, and Hao Zhang "Differential protection method for EHV transmission line based on current traveling wave prediction", Proc. SPIE 12704, Eighth International Symposium on Advances in Electrical, Electronics, and Computer Engineering (ISAEECE 2023), 127041K (31 May 2023); https://doi.org/10.1117/12.2680594

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