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Energies
Volume 18
Issue 9
10.3390/en18092269
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This is an early access version, the complete PDF, HTML, and XML versions will be available soon.
Article

Detection of Cross-Line Successive Faults in Non-Effective Neutral Grounding Distribution Networks

by
Yuxuan Jin
1,
Bin Wang
1,*,
Mingming Xu
2,
Ruirui Xie
2,
Zhi Li
3 and
Xuan Dong
2
1
National Key Laboratory of New Power System Operation and Control, Department of Electrical Engineering Tsinghua University, Haidian District, Beijing 100084, China
2
Electric Power Science Research Institute of State Grid Henan Electric Power Company, Zhengzhou 450052, China
3
Zhejiang Huadian Equipment Testing and Research Institute Co., Ltd., Hangzhou 310015, China
*
Author to whom correspondence should be addressed.
Energies 2025, 18(9), 2269; https://doi.org/10.3390/en18092269 (registering DOI)
Submission received: 27 February 2025 / Revised: 13 April 2025 / Accepted: 27 April 2025 / Published: 29 April 2025
(This article belongs to the Section F: Electrical Engineering)
Versions Notes

Abstract

In a non-effectively grounded neutral point distribution network, prolonged feeder operation reduces the insulation level, thereby increasing the likelihood of single-phase grounding faults that can generate over-voltages and eventually lead to successive two-point grounding faults. Existing detection methods for single-phase grounding faults fail to identify the second grounding fault in such scenarios. This paper derives the steady-state analytical expressions for the electrical quantities during faults and examines the characteristic differences at various stages of successive grounding faults under different fault phase sequences. Based on these distinctive features, the paper proposes a detection method for successive cross-line grounding faults with varying fault phases. The effectiveness of the proposed algorithm is verified through both simulation and field data.
Keywords: cross-line fault; successive grounding fault; distribution system; single-phase-to-ground fault cross-line fault; successive grounding fault; distribution system; single-phase-to-ground fault

Share and Cite

MDPI and ACS Style

Jin, Y.; Wang, B.; Xu, M.; Xie, R.; Li, Z.; Dong, X. Detection of Cross-Line Successive Faults in Non-Effective Neutral Grounding Distribution Networks. Energies 2025, 18, 2269. https://doi.org/10.3390/en18092269

AMA Style

Jin Y, Wang B, Xu M, Xie R, Li Z, Dong X. Detection of Cross-Line Successive Faults in Non-Effective Neutral Grounding Distribution Networks. Energies. 2025; 18(9):2269. https://doi.org/10.3390/en18092269

Chicago/Turabian Style

Jin, Yuxuan, Bin Wang, Mingming Xu, Ruirui Xie, Zhi Li, and Xuan Dong. 2025. "Detection of Cross-Line Successive Faults in Non-Effective Neutral Grounding Distribution Networks" Energies 18, no. 9: 2269. https://doi.org/10.3390/en18092269

APA Style

Jin, Y., Wang, B., Xu, M., Xie, R., Li, Z., & Dong, X. (2025). Detection of Cross-Line Successive Faults in Non-Effective Neutral Grounding Distribution Networks. Energies, 18(9), 2269. https://doi.org/10.3390/en18092269

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