| 小电流接地系统单相断线接地复故障类型诊断 |
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| 引用本文： | 王士新,张慧芬,徐斌,魏亚军,刘宗杰,黄坛坛.小电流接地系统单相断线接地复故障类型诊断[J].电力自动化设备,2018,38(7). |
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| 作者姓名： | 王士新 张慧芬 徐斌 魏亚军 刘宗杰 黄坛坛 |
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| 作者单位： | 济南大学自动化与电气工程学院;国网山东省电力公司济宁供电公司 |
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| 基金项目： | 山东省自然科学基金资助项目(ZR2012EEL19)；临沂市科技发展计划资助项目(201313018) |
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| 摘 要： | 在考虑负荷性质、中性点接地方式、过渡电阻等因素的条件下,利用复合序网分析了配电线路单相断线接地复故障的故障特征,得出不同影响因素下零序电压的幅值和相位信息变化差别显著的结论,从而提出一种基于零序电压幅值和相位的小电流接地系统单相断线接地复故障类型的诊断判据。PSCAD仿真验证了该判据的有效性。
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| 关 键 词： | 小电流接地系统 单相断线接地复故障 故障类型 零序电压 |
Diagnosis of single-phase grounding fault with line-broken in small current neutral grounding system |
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| WANG Shixin,ZHANG Huifen,XU Bin,WEI Yajun,LIU Zongjie and HUANG Tantan.Diagnosis of single-phase grounding fault with line-broken in small current neutral grounding system[J].Electric Power Automation Equipment,2018,38(7). |
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| Authors: | WANG Shixin ZHANG Huifen XU Bin WEI Yajun LIU Zongjie and HUANG Tantan |
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| Affiliation: | School of Automation and Electrical Engineering, University of Jinan, Jinan 250022, China,School of Automation and Electrical Engineering, University of Jinan, Jinan 250022, China,Jining Power Supply Company of State Grid Shandong Electric Power Company, Jining 272100, China,Jining Power Supply Company of State Grid Shandong Electric Power Company, Jining 272100, China,Jining Power Supply Company of State Grid Shandong Electric Power Company, Jining 272100, China and School of Automation and Electrical Engineering, University of Jinan, Jinan 250022, China |
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| Abstract: | Considering the characteristics of loads, neutral grounding modes and transition resistance, the feature of single-phase grounding fault with line-broken in small current neutral grounding system is analyzed by using the compound sequence network. The analytical results show that the variations of amplitude and phase information of zero-sequence voltage under different influencing factors are obviously different when single-phase grounding fault with line-broken occurs, according to which, a fault diagnosis criteria of single-phase grounding fault in small current neutral grounding system is proposed based on zero-sequence voltage amplitude and phase. PSCAD simulation verifies the correctness of the proposed criteria. |
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| Keywords: | small current neutral grounding system single-phase grounding fault with line-broken fault types zero-sequence voltage |
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