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| 10kV配电网中性点经消弧线圈接地系统的故障选线方法 | |
| 引用本文： | 董秀清,杨炳元,金海望,刘洵宇,高科. 10kV配电网中性点经消弧线圈接地系统的故障选线方法[J]. 内蒙古电力技术, 2012, 30(4): 9-13 |
| 作者姓名： | 董秀清 杨炳元 金海望 刘洵宇 高科 |
| 作者单位： | 1. 薛家湾供电局,内蒙古鄂尔多斯,010300 2. 内蒙古工业大学电力学院,内蒙古呼和浩特,010080 3. 内蒙古超高压供电局,内蒙古 呼和浩特,010080 4. 内蒙古电力勘测设计院,内蒙古呼和浩特,010020 |
| 摘 要： | 基于中性点经消弧线圈接地方式的小电流接地系统单相接地故障选线的研究现状,应用小波变换中信号奇异性检测原理对故障后暂态零序电流进行分析,提出通过对暂态零序电流求模极大值,用最大模极大值比值与其所设阈值比较的选线方法,通过Matlab/Simulink仿真分析,验证了该方法在纯架空、纯电缆、架空和电缆混搭三种线路类型中的任一条线路及两条线路同时发生单相接地故障时选线的可行性,同时给出该方法失效情况的说明. |
| 关 键 词： | 10 kV配电网 中性点 消弧线圈 故障选线 模极大值 |
Fault Line Selection Method of Grounding System with 10 kV Power Network Neutral Point through Petersen Coil |
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| Dong Xiuqing , Yang Bingyuan , Jin Haiwang , Liu Xunyu , Gao Ke. Fault Line Selection Method of Grounding System with 10 kV Power Network Neutral Point through Petersen Coil[J]. Inner Mongolia Electric Power, 2012, 30(4): 9-13 | |
| Authors: | Dong Xiuqing Yang Bingyuan Jin Haiwang Liu Xunyu Gao Ke |
| Affiliation: | 1.Xue Jia Wan Power Supply Bureau, Inner Mongolia Erdos 010300; 2.Inner Mongolia University of Technology, Inner Mongolia Hohhot 010080; 3.Inner Mongolia EHV Bureau, Inner Mongolia Hohhot 010080; 4.Inner Mongolia Power Suvey And Design Institute, Inner Mongolia Hohhot 010020) |
| Abstract: | Based on the situation of fault line selection for single-phase-to-ground on Neutral Point Grounding through Petersen Coil of small current grounding system, apply signal singularity detection principle of wavelet transform to analyze transient zero sequence current after fault, and propose line selection method by transient zero sequence current for modulus maxima, meanwhile, compare maximal modulus maximum ratio with threshold value. And through Matlab/Simulink simulation analysis, this method is proved to be feasible in any one line and two lines of three types of pure overhead, pure cable, overhead-cable mashup lines when single-phase-to-ground fault happened, meanwhile, give the illustration of failure. |
| Keywords: | 10 kV power network neutral point petersen coil fault line selection modulus maxima |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |