庄胜斌;缪希仁;江灏;郭谋发;

• 1:福州大学电气工程与自动化学院

摘要(Abstract)：

针对谐振接地系统发生单相高阻接地故障时单一特征量故障信息不明显,以及故障线路与非故障线路暂态零序电流存在明显差异的特点,提出一种基于改进欧式-动态弯曲距离的单相高阻接地故障选线新方法。将动态弯曲距离与欧式距离相结合,求取各线路故障2个周期后暂态零序电流波形的相似度矩阵,构建各线路波形的综合相似系数,并结合模糊C均值聚类算法,实现单相高阻接地故障选线。对于工程应用中线路参数差异造成的非故障线路暂态零序电流波形相似性低的问题,对原始波形进行预处理,以提高选线方法的可靠性。通过大量仿真,验证选线方法对单相高阻接地故障和各类接地故障的有效性。在噪声干扰、采样不同步、零序电流互感器极性反接、两点高阻接地等极端情况下,选线方法具有较强的鲁棒性和容错性。

关键词(KeyWords)： 谐振接地系统;单相高阻接地故障;波形预处理;改进欧氏-动态弯曲距离;模糊C均值聚类

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51377023)~~

作者(Author): 庄胜斌;缪希仁;江灏;郭谋发;

Email:

DOI:

参考文献(References)：

• [1] Russell D B,Aucoin M B,Benner C L.Randomness fault detection system:US,US 5485093 A[P].1996.
• [2] Sultan A F,Swift G W,Fedirchuk D J.Detecting arcing downed-wires using fault current flicker and half-cycle asymmetry[J]. IEEE Transactions on Power Delivery,1994,9(1):461-470.
• [3]王智，汪芳宗．配电系统接地故障检测的一种新算法[J]．电力系统保护与控制，2011,39(20):48-51.Wang Zhi,Wang Fangzong.A new method of earth fault detection in distribution system[J].Power System Protection and Control,2011,39(20):48-51(in Chinese).
• [4]魏向向，温渤婴．基于2阶累加生成相关性的谐振接地系统故障选线方法[J]．电网技术，2017,41(5):1674-1682.Wei Xiangxiang,Wen Boying.A novel fault line detection method based on 2-order accumulated generating operation correlation analysis for resonant earthed system[J].Power System Technology,2017,41(5):1674-1682(in Chinese).
• [5]王伟，焦彦军．暂态信号特征分量在配网小电流接地选线中的应用[J]．电网技术，2008,32(4):96-100.Wang Wei,Jiao Yanjun.Application of characteristic components of transient signal in grounded wire detection of ineffectively earthed distribution systems[J].Power System Technology,2008,32(4):96-100(in Chinese).
• [6]王艳松，陈国明，张加胜，等．基于小波包的配电网单相接地故障选线新方法[J]．高电压技术，2005,31(6):78-80.Wang Yansong,Chen Guoming,Zhang Jiasheng,et al.Novel algorithm of fault line selection based on wavelet packet for single-phase to ground fault in distribution networks[J].High Voltage Engineering,2005,31(6):78-80(in Chinese).
• [7]康忠健，李丹丹，刘晓林．应用非工频暂态分量的配电网故障选线方法[J]．电力自动化设备，2011,31(4):1-6.Kang Zhongjian,Li Dandan,Liu Xiaolin.Faulty line selection with non-power frequency transient components of distribution network[J].Electric Power Automation Equipment,2011,31(4):1-6(in Chinese).
• [8]曲轶龙，谭伟璞，杨以涵．基于形态滤波的谐振接地系统故障选线新方法[J]．电力系统自动化，2008,32(12):73-77.Qu Yilong,Tan Weipu,Yang Yihan.A new transient method for earth fault line selection in resonant grounded power system based on morphological filtering[J].Automation of Electric Power Systems,2008,32(12):73-77(in Chinese).
• [9]张钧，何正友，贾勇．基于S变换的故障选线新方法[J]．中国电机工程学报，2011,31(10):109-115.Zhang Jun,He Zhengyou,Jia Yong.Fault line identification approach based on S-transform[J].Proceedings of the CSEE,2011,31(10):109-115(in Chinese).
• [10]张艳霞，王清亮．应用故障暂态特性实现配电网故障选线的新方法[J]．电力系统自动化，2009,33(16):76-80.Zhang Yanxia,Wang Qingliang.New method for single-phaseto-ground fault feeder selection based on analysis of fault transient characteristics[J].Automation of Electric Power Systems,2009,33(16):76-80(in Chinese).
• [11]吴乐鹏，黄纯，林达斌，等．基于暂态小波能量的小电流接地故障选线新方法[J]．电力自动化设备，2013,33(5):70-75.Wu Lepeng,Huang Chun,Lin Dabin,et al.Faulty line selection based on transient wavelet energy for non-solid-earthed network[J].Electric Power Automation Equipment,2013,33(5):70-75(in Chinese).
• [12]张伟刚，张保会，胡海松，等．应用小波包分析实现配电网单相接地故障选线[J]．电力系统自动化，2009,33(23):60-64.Zhang Weigang,Zhang Baohui,Hu Haisong,et al.Application of wavelet packet analysis in phase-to-ground fault detection of distribution networks[J].Automation of Electric Power Systems,2009,33(23):60-64(in Chinese).
• [13]柬洪春，朱梦梦，黄文珍，等．基于暂态零序电流时频特征量的配网故障选线方法[J]．电力自动化设备，2013,33(9):1-6.Shu Hongchun,Zhu Mengmeng,Huang Wenzhen,et al.Faulty line selection based on time-frequency characteristics of transient zerosequence current[J].Electric Power Automation Equipment,2013,33(9):1-6(in Chinese).
• [14]薛永端，李娟，陈筱薷，等．谐振接地系统高阻接地故障暂态选线与过渡电阻辨识[J]．中国电机工程学报，2017,37(17):5037-5048.Xue Yongduan,Li Juan,Chen Xiaoru,et al. Faulty feeder selection and transition resistance identification of high impedance fault in a resonant grounding system using transient signals[J].Proceedings of the CSEE,2017,37(17):5037-5048(in Chinese).
• [15]黄纯，刘鹏辉，江亚群，等．基于动态时间弯曲距离的主动配电网馈线差动保护[J]．电工技术学报，2017,32(6):240-247.Huang Chun,Liu Penghui,Jiang Yaqun,et al.Feeder differential protection based on dynamic time warping distance in active distribution network[J].Proceedings of the CSEE,2017,32(6):240-247(in Chinese).
• [16]储佳伟，袁晓冬，陈兵，等．结合小波分析和改进型DTW距离的配电网电压暂降源辨识方法[J]．电网技术，2018,42(2):637-643.Chu Jiawei,Yuan Xiaodong,Chen Bing,et al.A method for distribution network voltage sag source identification combining wavelet analysis and modified DTW distance[J]. Power System Technology,2018,42(2):637-643(in Chinese).
• [17]李海林，杨丽彬．基于增量动态时间弯曲的时间序列相似性度量方法[J]．计算机科学，2013,40(4):227-230.Li Hailin,Yang Libin.Similarity measure for time series based on incremental dynamic time warping[J].Computer Science,2013,40(4):227-230(in Chinese).
• [18]邵翔，郭谋发，游林旭．基于改进DTW的接地故障波形互相关度聚类选线方法[J]．电力自动化设备，2018,38(11):63-71.Shao Xiang,Guo Moufa,You Linxu.Faulty line selection method using mutual correlation cluster of grounding fault waveforms based on improved DTW method[J]. Electric Power Automation Equipment,2018,38(11):63-71(in Chinese).
• [19]王宾，耿建昭，董新洲．配网高阻接地故障伏安特性分析及检测[J]．中国电机工程学报，2014,34(22):3815-3823.Wang Bin,Geng Jianzhao,Dong Xinzhou.Analysis and detection of volt-ampere characteristics for high impedance faults in distribution systems[J].Proceedings of the CSEE,2014,34(22):3815-3823(in Chinese).
• [20]薛永端，李娟，徐丙垠．中性点经消弧线圈接地系统小电流接地故障暂态等值电路及暂态分析[J]．中国电机工程学报，2015,35(22):5703-5714.Xue Yongduan,Li Juan,Xu Bingyin. Transient equivalent circuit and transient analysis of single-phase earth fault in arc suppression coil grounded system[J].Proceedings of the CSEE,2015,35(22):5703-5714(in Chinese).
• [21] Pal N R,Bezdek J C.On cluster validity for the fuzzy c-means model[M].IEEE Transactions on Fuzzy Systems,1995,3(3):370-379.
• [22] Gautam S,Brahma S M.Detection of high impedance fault in power distribution systems using mathematical morphology[J]. IEEE Transactions on Power Systems,2013,28(2):1226-1234.