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| Review of grounding fault testing and design of real experiment field for 10 kV distribution network |
| DOI：10.19783/j.cnki.pspc.190809 |
| Key Words:10 kV distribution network small current grounding fault simulation testing real experiment field |
| Author Name | Affiliation | | WANG Peng | State Grid Henan Electric Power Research Institute, Zhengzhou 450052, China | | FENG Guang | State Grid Henan Electric Power Research Institute, Zhengzhou 450052, China | | WEI Yanfang | School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China | | WANG Lei | State Grid Henan Electric Power Research Institute, Zhengzhou 450052, China | | CHEN Ming | State Grid Henan Electric Power Research Institute, Zhengzhou 450052, China | | WANG Xiaowei | School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China | | ZENG Zhihui | School of Electrical Engineering and Automation, Henan Polytechnic University, Jiaozuo 454000, China | | CHENG Fengming | Luohe Power Supply Company, State Grid Henan Electric Power Company, Luohe 462000, China |
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| Abstract:To solve the difficulties in selecting and locating single-phase grounding faults, and the inefficiency of related product testing, simulation tests and verification for grounding faults of a 10 kV distribution network are reviewed. First, based on the transient analysis of single-phase grounding, the mechanism of the difficulty in grounding line selection is analyzed. Three test and verification methods are summarized, and the merits and demerits of each method are analyzed. Then, the reasons for the unsatisfactory effect of line selection and locating devices for small current grounding faults are analyzed. The difficulties faced by simulation and test verification are discussed. The importance and urgency of establishing a real experimental field are discussed. Finally, the design scheme of a real experimental field for a 10 kV distribution network is given, and practical test cases are discussed. The prospective technical advantages and application prospects of the real experimental field are discussed. This work is supported by National Natural Science Foundation of China (No. 61703144). |
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