基于零模行波S变换时频矩阵的配电网单相接地故障定位方法
CSTR:
作者:
作者单位:

(1.国网四川省电力公司,四川 成都 610041;2.国网四川省电力公司成都供电公司,四川 成都 610042)

通讯作者:

杨小磊(1985—),男,硕士,高级工程师,主要从事电力调度自动化、电力系统继电保护的研究;E?mail:406662394@qq.com

中图分类号:

TM862

基金项目:

国家电网有限公司科技项目(5400?202126143A?0?0?00)


Accurate location method of single‑phase‑to‑ground fault in distribution network based on zero‑mode traveling‑wave S‑transform time‑frequency matrix
Author:
Affiliation:

(1.State Grid Sichuan Electric Power Company, Chengdu 610041,China;2.Chengdu Power Supply Company,State Grid Sichuan Electric Power Company, Chengdu 610042)

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    摘要:

    为提高配电网发生单相接地故障时的定位精度,提出一种基于电压零模行波S变换时频矩阵的选线和定位方法。首先,将各条馈线末端行波检测装置测得的行波信号解耦,得到故障电压零模行波;然后,在主馈线、一级和二级分支支路等特殊位置设置故障,得到对应故障位置的S变换时频矩阵,建立确定故障支路的对比库;最后,将故障零模电压行波S变换时频矩阵与对比库中数据进行相似度对比,确定单相接地故障发生的馈线和所在支路,针对不同性质支路选取适应性最优的定位方法,实现配电网单相接地故障的精确定位。仿真结果表明:该方法的定位准确度高,且无须全网配备行波检测装置便能够实现配电网单相接地故障的精确定位。

    Abstract:

    To improve the accuracy of fault location in the case of single-phase grounding faults in distribution networks, a method for fault line selection and location based on the voltage zero-mode traveling-wave S-transform time-frequency matrix is proposed. First, the traveling-wave signals measured by the traveling-wave detection devices at the ends of each feeder are decoupled to obtain the fault voltage zero-mode traveling wave. Then, faults are set at special locations such as the main feeder, primary and secondary branch lines to obtain the S-transform time-frequency matrix corresponding to the fault location, and a comparison library for determining the fault branch is established. Finally, the S-transform time-frequency matrix of the fault zero-mode voltage traveling wave is compared with the data in the comparison library for similarity to determine the feeder and branch where the single-phase grounding fault occurs. The optimal location method is selected for different types of branches to achieve precise location of single-phase grounding faults in distribution networks. Simulation results show that this method has high accuracy in fault location and can achieve precise location of single-phase grounding faults in distribution networks without the need for traveling-wave detection devices across the entire distribution network.

    参考文献
    [1] 肖白,束洪春,高峰,等.小电流接地系统单相接地故障选线方法综述[J].继电器,2001,29(4):16-20. XIAO Bai,SHU Hongchun,GAO Feng,et al.Survey of the methods of fault line selection for single?phase?to? earth fault in networks with ungrounded neutral[J].Relay,2001,29(4):16-20.
    [2] 齐郑,黄朝晖,陈艳波.基于零序分量的阻抗法配电网故障定位技术[J].电力系统保护与控制,2023,51(6):54-62. QI Zheng,HUANG Chaohui,CHEN Yanbo.Impedance fault location technology for a distribution network based on a zero-sequence component[J].Power System Protection and Control,2023,51(6):54-62.
    [3] 张慧芬,张帆,潘贞存.基于注入信号法的配电网单相接地故障自动定位算法[J].电力自动化设备,2008,28(6):39-43. ZHANG Huifeng,ZHANG Fan,PAN Zhengcun.Automatic fault locating algorithm based on signal injection method for distribution system[J].Electric Power Automation Equipment,2008,28(6):39-43.
    [4] 洪亚,谭阳红,易汗林,等.配电网单相接地故障行波定位新方法[J].电力系统及其自动化学报,2017,29(2):14-20. HONG Ya,TAN Yanghong,YI Hanlin,et al.New method of single phase-to-ground fault location based on traveling wave in distribution networks[J].Proceedings of the CSU-EPSA,2017,29(2):14-20.
    [5] CHOI M S,LEE S J,LIM S I,et al.A direct three-phase circuit analysis-based fault location for line-to-line fault[J].IEEE Transactions on Power Delivery,2007,22(4):2541-2547.
    [6] SALIM R H,RESENER M,FILOMENA A D,et al.Extended fault-location formulation for power distribution systems[J].IEEE Transactions on Power Delivery,2009,24(2):508-516.
    [7] 朱占春,潘宗俊,唐金锐,等.基于单端暂态能量谱相似性的配电网故障区段定位新方法[J].电力科学与技术学报,2021,36(2):180-191. ZHU Zhanchun,PAN Zongjun,TANG Jinrui,et al.A novel fault location method for power distribution systems using energy spectrum similarity analysis of single-terminal transient waveform[J].Journal of Electric Power Science and Technology,2021,36(2):180-191.
    [8] 梁英,杨嘉,李勤新,等.基于时频谱相似度的高压直流线路行波保护方法[J].电力科学与技术学报,2019,34(2):182-186. LIANG Ying,YANG Jia,LI Qinxin,et al.Traveling wave protection method for HVDC lines based on the time frequency spectrum similarity[J].Journal of Electric Power Science and Technology,2019,34(2):182-186.
    [9] 万信书,方连航,梁钰,等.基于三相电流幅值分析的小电流单相接地故障区段定位方法[J].电力科学与技术学报,2020,35(4):49-57. WAN Xinshu,FANG Lianhang,LIANG Yu,et al.Method of fault section location for the small current single-phase-to-ground fault based on the amplitude analysis of three-phase current[J].Journal of Electric Power Science and Technology,2020,35(4):49-57.
    [10] 杜刚,刘迅,苏高峰,等.基于FTU和"S"信号注入法的配电网接地故障定位技术的研究[J].电力系统保护与控制,2018,46(12):82-85. DU Gang,LIU Xun,SU Gaofeng,et al.Research on technology of grounding fault location combining FTU and "S" signal injecting method in distributiom grid[J].Power system protection and control,2018,46(12):82-85.
    [11] 邓丰,李鹏,曾祥君,等.基于D-PMU的配电网故障选线和定位方法[J].电力系统自动化,2020,44(19):160-167. DENG Feng,LI Peng,ZENG Xiangjun,et al.Fault line selection and location method based on synchrophasor measurement unit for distribution network[J].Automation of Electric Power Systems,2020,44(19):160-167.
    [12] 李冬梅,胡扬宇,王利利,等.基于改进注入法的直流配电网双端测距故障定位方法[J].智慧电力,2019,47(12):110-116. LI Dongmei,HU Yangyu,WANG Lili.Double-end distance measurement fault location method for DC distribution network based on improved injection method[J].Smart Power,2019,47(12):110-116.
    [13] 史可鉴,陈刚,吴建军,等.基于行波信号注入的配网线路单相故障状态接地诊断方法[J].电网与清洁能源,2022,38(2):82-87. SHI Kejian,CHEN Gang,WU Jianjun,et al.A single phase grounding fault state diagnosis method for distribution network lines based on traveling wave signal injection[J].Power System and Clean Energy,2022,38(2):82-87.
    [14] 韦翔,梁艳,郭立,等.基于Lambda算法的配电网故障定位方法研究[J].电测与仪表,2022,59(12):71-76. WEI Xiang,LIANG Yan,GUO Li,et al.Research on fault location method of distribution network based on Lambda algorithm[J]. Electrical Measurement & Instrumentation,2022,59(12):71-76.
    [15] 唐金锐,尹项根,张哲,等.零模检测波速度的迭代提取及其在配电网单相接地故障定位中的应用[J].电工技术学报,2013,28(4):202-211. TANG Jinrui,YIN Xianggen,ZHANG Zhe.Iterative extraction of detected zero-mode wave velocity and its application in single phase-to-ground fault location in distribution networks[J].Transactions of China Electrotechnical Society,2013,28(4):202-211.
    [16] 张帆,潘贞存,马琳琳,等.基于模量行波传输时间差的线路接地故障测距与保护[J].中国电机工程学报,2019,29(10):78-83. ZHANG Fan,PAN Zhengcun,MA Linlin,et al.Transmission line fault location and protection based on the gap between zero mode and aerial mode traveling wave propagation time[J].Proceedings of the CSEE,2019,29(10):78-83.
    [17] 秦苏亚,薛永端,刘砾钲,等.有源配电网小电流接地故障暂态特征及其影响分析[J].电工技术学报,2022,37(3):655-666. QIN Suya,XUE Yongduan,LIU Yizheng,et al.Transient characteristics and influence of small current grounding fault in active distribution network[J].Transactions of China Electrotechnical Society,2022,37(3):655-666.
    [18] 刘晓琴,王大志,江雪晨,等.利用行波到达时差关系的配电网故障定位算法[J].中国电机工程学报,2017,37(14):4109-4115. LIU Xiaoqing,WANG Dazhi,JIANG Xuechen,et al.Fault location algorithm for distribution power network based on relationship in time difference of arrival of traveling wave[J].Proceedings of the CSEE,2017,37(14):4109-4115.
    [19] 王阳,曾祥君,黎锐烽,等.基于图论的配电网故障行波定位新算法[J].电力系统自动化,2012,36(18):143-147. WANG Yang,ZENG Xiangjun,LI Ruifeng,et al.A traveling wave fault location algorithm for distribution network based on graph theory[J].Automation of Electric Power Systems,2012,36(18):143-147.
    [20] 曹璞璘,申忠友,束洪春,等.基于波形突变特征的海量行波数据中雷击干扰波形辨识[J].电力系统自动化,2023,47(17):178-186. CAO Pulin, SHEN Zhongyou, SHU Hongchun, et al.Identification of lightning interference waveforms in massive traveling wave data based on waveform mutation characteristics[J].Automation of Electric Power Systems, 2023,47(17):178-186.
    [21] 穆利智,李泽文,吕佳佳,等.结合EMD-WVD和布谷鸟搜索算法的输电线路故障暂态保护[J].电力系统自动化,2020,44(16):137-144. MU Lizhi,LI Zewen,Lü Jiajia,et al.Transient protection for transmission line fault combining empirical mode decomposition-wigner ville distribution and Cuckoo search algorithm[J].Automation of Electric Power Systems,2020,44(16):137-144.
    [22] 李浩,张禄亮,麦章渠,等.基于改进离散型麻雀搜索算法的配电网恢复重构方法[J].智慧电力,2023,51(7):16-22+30. LI Hao,ZHANG Luliang,MAI Zhangqu,et al.Distribution network recovery reconfiguration method based on improved discrete sparrow search algorithm[J].Smart Power,2023,51(7):16-22+30
    [23] 殷浩然,苗世洪,郭舒毓,等.基于S变换相关度和深度学习的配电网单相接地故障选线新方法[J].电力自动化设备,2021,41(7):88-96. YIN Haoran,MIAO Shihong,GUO Shuyu,et al.Novel method for single-phase grounding fault line selection in distribution network based on S-transform correlation and deep learning[J].Electric Power Automation Equipment,2021,41(7):88-96
    [24] 谢李为,李勇,罗隆福,等.基于距离矩阵与分支系数的配电网故障定位方法[J].中国电机工程学报,2020,40(7):2180-2191. XIE Liwei,LI Yong,LUO Longfu,et al.Fault location method for distribution networks based on distance matrix and branch coefficient[J].Proceedings of the CSEE,2020,40(7):2180-2191.
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引用本文

杨小磊,袁明哲,邹经鑫.基于零模行波S变换时频矩阵的配电网单相接地故障定位方法[J].电力科学与技术学报,2024,39(4):93-101.
YANG Xiaolei, YUAN Mingzhe, ZOU Jingxin. Accurate location method of single‑phase‑to‑ground fault in distribution network based on zero‑mode traveling‑wave S‑transform time‑frequency matrix[J]. Journal of Electric Power Science and Technology,2024,39(4):93-101.

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