| 基于暂态零模电流的配电网故障区段定位 |
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| 引用本文： | 王晓伟,张晓,赵倩宇,徐嘉斌,张玉振. 基于暂态零模电流的配电网故障区段定位[J]. 智慧电力, 2021, 0(3): 103-110 |
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| 作者姓名： | 王晓伟 张晓 赵倩宇 徐嘉斌 张玉振 |
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| 作者单位： | 山东科技大学电气与自动化工程学院;天津大学教育部智能电网重点实验室;国网东营供电公司 |
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| 基金项目： | 国家重点研发计划资助项目(2018YFB0904704)。 |
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| 摘 要： | 为降低小电流接地系统通信过程中小波扰动(噪声)对暂态电流法的干扰,减小因采样频率增加造成的通信网络负担,解决故障两侧馈线终端不同步的问题,提出了一种小电流接地系统的故障区段定位方法.通过检测故障区段两侧的暂态零模电流,提取其中的极值,并计算其衰减程度,利用其极性进行辅助定位.数值仿真的结果验证了所提方法的有效性,该方法...
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| 关 键 词： | 小电流接地系统 单相接地故障 区段定位 暂态零模电流 |
Fault Section Location in Distribution System Based on Transient Zero-mode Current |
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| WANG Xiaowei,ZHANG Xiao,ZHAO Qianyu,XU Jiabin,ZHANG Yuzhen. Fault Section Location in Distribution System Based on Transient Zero-mode Current[J]. Smart Power, 2021, 0(3): 103-110 |
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| Authors: | WANG Xiaowei ZHANG Xiao ZHAO Qianyu XU Jiabin ZHANG Yuzhen |
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| Affiliation: | (College of Electrical Engineering and Automation,Shandong University of Science and Technology,Qingdao 266590,China;Tianjin University,Key Laboratory of Smart Grid of Ministry of Education,Tianjin 300072,China;State Grid Dongying Power Supply Company,Dongying 257091,China) |
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| Abstract: | In order to reduce the interference of small wave disturbances(noise)on transient current in the communication process of small current grounding system and the communication network burden caused by sampling frequency increase,and solve the problem of the asynchrony of feeder terminal unit on both sides of fault section,the paper proposes a method for locating the faulty section in the small current grounding system.By detecting the transient zero mode current on both sides of the faulty section,the extreme value is extracted,the attenuation degree is calculated,and the auxiliary localization is carried out with the polarity.This method can greatly reduce the data transmission of the transient zero-mode current at each detection point during the process of upload or mutual exchange.Numerical simulation results show the effectiveness of the method. |
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| Keywords: | small current grounding system single-phase grounding fault section location transient zero mode current |
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