Arc suppression method for grounding fault based on additional energy loop

Authors

• Ming LI, Electric Power Research Institute, China Southern Power Grid, Guangzhou 510080, China
• Chengzhi WEI, Electric Power Research Institute, China Southern Power Grid, Guangzhou 510080, China
• Yang LIU, Electric Power Research Institute, China Southern Power Grid, Guangzhou 510080, China
• Runhong HUANG, Electric Power Research Institute, China Southern Power Grid, Guangzhou 510080, China
• Ruifeng ZHAO, Electric Power Dispatching and Control Center of Guangdong Power Grid Co., Ltd., Guangzhou 510000, China
• Jiangang LU, Electric Power Dispatching and Control Center of Guangdong Power Grid Co., Ltd., Guangzhou 510000, China
• Yizhe CHEN, Zhaoqing Power Supply Bureau, Guangdong Power Grid Co., Ltd., Zhaoqing 526060, China
• Zejun HUANG, National Electric Power Conversion and Control Engineering Technology Research Center, Hunan University, Changsha 410082, ChinaFollow

Keywords

single line-to-ground fault; grounding fault control; multi-function arc suppression device; additional energy loop

Abstract

The problems of low utilization and high cost of traditional arc suppression devices can be effectively solved by a multi-function arc suppression device (MF-ASD). However, active power is consumed by the MF-ASD during arc suppression. How to realize the DC-link voltage stability of the active module without an additional power supply unit is worth further discussion. An arc suppression method for grounding faults based on an additional energy loop is proposed. First, the topological structure and working principle of the MF-ASD are briefly described. Second, the influence mechanism of traditional arc suppression methods on the output active power and energy flow direction of the MF-ASD is analyzed, and the internal reason for the change in DC-link capacitor voltage is clarified. Third, an additional energy loop is constructed between the power grid and the MF-ASD to compensate for the active power and reactive power required for the DC-link voltage stability of the MF-ASD during arc suppression, thereby solving the problem that single line-to-ground faults cannot be stably suppressed. Finally, the effectiveness and feasibility of the proposed method are comprehensively verified by simulations and experiments.

DOI

10.19781/j.issn.1673-9140.2026.02.027

First Page

304

Last Page

313

Recommended Citation

LI, Ming; WEI, Chengzhi; LIU, Yang; HUANG, Runhong; ZHAO, Ruifeng; LU, Jiangang; CHEN, Yizhe; and HUANG, Zejun (2026) "Arc suppression method for grounding fault based on additional energy loop," Journal of Electric Power Science and Technology: Vol. 41: Iss. 2, Article 27.
DOI: 10.19781/j.issn.1673-9140.2026.02.027
Available at: https://jepst.researchcommons.org/journal/vol41/iss2/27