| 引用本文: | 尤向阳,葛笑寒,吴萍.基于零序电流波形相似度的接地故障定位方法[J].电力系统保护与控制,2019,47(14):125-130.[点击复制] |
| YOU Xiangyang,GE Xiaohan,WU Ping.Grounding fault location method based on waveform similarity of zero-sequence current[J].Power System Protection and Control,2019,47(14):125-130[点击复制] |
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| 摘要: |
| 为了准确定位小电流接地系统中单相接地故障点，在中心站故障定位系统架构下，基于暂态录波故障指示器，将故障定位转化为比较零序电流相似度的问题。在对线路拓扑结构采用六位数编码进行描述的基础上，设计了基于离散均方根距离的故障定位算法。通过仿真模拟实际运行中可能出现的各种接地故障，并进行定位试验。测试结果表明，将对比零序电流波形相似度应用到配电自动化在线监测领域中进行接地故障定位是可行的。 |
| 关键词: 零序电流波形 相似度 离散均方根距离 故障定位 |
| DOI：10.7667/PSPC20191416 |
| 投稿时间：2018-10-15修订日期：2018-11-29 |
| 基金项目:河南省科技攻关项目资助(182102210479);河南省高等学校重点科研项目资助(17A413010) |
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| Grounding fault location method based on waveform similarity of zero-sequence current |
| YOU Xiangyang,GE Xiaohan,WU Ping |
| (School of Applied Engineering, Henan University of Science and Technology, Sanmenxia 472000, China;Sanmenxia Polytechnic, Sanmenxia 472000, China) |
| Abstract: |
| In order to accurately locate the single phase ground fault point in the small-current grounding system, the fault location is transformed into comparing zero sequence current similarity based on transient recording fault indicator. The coding rules of each branch of power line are determined. A fault location algorithm is designed based on discrete mean distance. The experiment is carried out by simulating various ground faults that may occur in practice. The test results show that it is feasible to apply the method of comparing the similarity of zero-sequence current waveforms to the on-line monitoring field of distribution automation for ground fault location. This work is supported by Henan Provincial Science and Technology Project (No. 1821021479) and Key Research Projects of Henan Higher Education Institutions (No. 17A413010). |
| Key words: zero-sequence current waveform similarity discrete mean distance fault location |
