基于双层阻抗模型的三相单芯电缆自恢复故障定位

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (1417 KB)
输出: BibTeX | EndNote (RIS)

摘要地下电缆的失效过程伴随着周期性发生的自恢复故障。快速准确地定位这类故障能够在电缆发生永久性击穿之前发现电缆潜在故障位置,为电缆的运维检修提供依据。计及电缆金属护层的影响,提出一种基于双层阻抗模型的三相单芯电缆自恢复故障定位方法。推导了双层阻抗模型下,三相单芯电缆导芯-护套自恢复接地故障和导芯-护套自恢复短路故障下的故障回路方程。利用电缆首端监测的电流电压波形,在较短故障时间下得到故障位置信息,最后通过最小二乘回归法实现了三相单芯电缆自恢复故障定位。大量仿真表明,计及电缆护套行为的故障定位算法能够准确识别电缆自恢复故障位置。该算法相对于只考虑导芯阻抗的算法更符合电缆实际模型,能够反映三相单芯金属护层的电气行为。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章

关键词 ：单芯电缆, 金属护套, 自恢复故障, 双层阻抗, 故障定位

Abstract：The failure process of the underground cable also accompanies the periodical self-clearing faults.Fast and accurate location of this kind of fault can find the potential fault points before a permanent breakdown,which provides the basis for operation and maintenance of underground cables.An algorithm for locating the self-clearing fault based the double impedance model in the three phase single core cables has been proposed that considers the impact of the metal sheath.The circuit equations of the core-sheath-ground self-clearing fault and the core-sheath self-clearing fault have been derived based on the double impedance model.The proposed method uses the time-domain information of the current and voltage waveforms monitored in the head-end of cables.The self-clearing fault can be located by the least squares regress method during a short time.Extensive simulations show that the algorithm,considering the behavior of the metal sheath of cables,can locate the self-clearing fault accurately.The proposed method is more consistent with actual structure of cables than the methods only consider the impedance of the core and it can explain the electrical behavior between the conduction and metal sheath of coaxial cables.

Key words： Single-core cable metal sheath self-clearing fault double impedance fault location

收稿日期: 2015-05-26 出版日期: 2016-09-18

PACS:

TM77

基金资助:国家自然科学基金(51307145)和四川省应用基础计划(2014JY0177)资助项目。

作者简介: 张姝女,1988年生,博士研究生,研究方向为配电网故障诊断。E-mail:ZS20061621@163.com;林圣男,1983年生,博士,副教授,研究方向为输配电网故障诊断。E-mail:slin@home.swjtu.edu.cn(通信作者)

引用本文:

张姝,林圣,唐进,何正友. 基于双层阻抗模型的三相单芯电缆自恢复故障定位[J]. 电工技术学报, 2016, 31(17): 1-10. Zhang Shu Lin Sheng Tang Jin, He Zhengyou. Fault Location of Self-Clearing Fault in Three Phase Single Core Cables Based on Double Impedance Model. Transactions of China Electrotechnical Society, 2016, 31(17): 1-10.

链接本文:

https://dgjsxb.ces-transaction.com/CN/Y2016/V31/I17/1

[1] 许刚,谈元鹏,黄琳.基于低秩矩阵填充的XLPE电力电缆寿命评估[J].电工技术学报,2014,29(12):268-276.
Xu Gang,Tan Yuanpeng,Huang Lin.Low-rank matrix completion based lifetime evaluation of XLPE power cable[J].Transactions of China Electrotechnical Society,2014,29(12):268-276.
[2] 黄泽华,李锰,刘裕涵.智能配电网自愈控制方案研究[J].电工技术学报,2014,29(1):492-496.
Huang Zehua,Li Meng,Liu Yuhan.Research of smart distribution network self-healing scheme[J].Transactions of China Electrotechnical Society,2014,29(1):492-496.
[3] 童宁,余梦琪,林湘宁.基于相电流高频特征识别的配电网故障指示器原理[J].电工技术学报,2015,30(12):465-471.
Tong Ning,Yu Mengqi,Lin Xiangning.Study for fault indicator based on the daulty phase current feature recognition for the distribution network[J].Transactions of China Electrotechnical Society,2015,30(12):465-471.
[4] 姚海燕,张静,留毅.基于多尺度小波判据的和时频特征关联的电缆早期故障检测和识别方法[J].电力系统保护与控制,2015,4(9):115-123.
Yao Haiyan,Zhang Jing,Liu Yi.Method of incipient faults detection and identification based on multi-scale wavelet criterions and time-frequency feature association[J].Power System Protection and Control,2015,4(9):115-123.
[5] Kim C,Bialek T,Awiylika J.An initial investigation for locating self-clearing faults in distribution systems[J].IEEE Transactions on Smart Grid,2013,4(2):1105-1112.
[6] 唐金锐,尹项根,张哲,等.零模检测波速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):203-211.
Tang Jinrui,Yin Xianggen,Zhang Zhe,et al.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):203-211.
[7] 梁睿,靳征,王崇林,等.行波时频复合分析的配电网故障定位研究[J].中国电机工程学报,2013,33(28):130-136.
Liang Rui,Jin Zheng,Wang Chonglin,et al.Research of fault location in distribution networks based on integration of travelling wave time and frequency analysis[J].Proceeding of the CSEE,2013,33(28):130-136.
[8] 刘朕志,舒勤,韩晓言.基于行波模量速度差的配电网故障测距迭代算法[J].电力系统保护与控制,2015,43(8):88-93.
Liu Zhenzhi,Shu Qin,Han Xiaoyan.An iterative fault algorithm using difference of wave velocity zero mode component and aerial mode component of travelling wave[J].Power System Protection and Control,2015,43(8):88-93.
[9] 张姝,何正友,赵云翾,等.基于C型行波法的10 kV客运专线电力电缆贯通线故障定位方法[J].电力系统保护与控制,2012,40(14):51-57.
Zhang Shu,He Zhengyou,Zhao Yunxuan,et al.A fault location,method based on C-type travelling wave for the power cable of the 10 kV passenger dedicated line[J].Power System Protection and Control,2012,40(14):51-57.
[10]李峰,徐丙垠.电弧反射电缆故障测距装置脉冲发射时刻选择算法[J].电力系统自动化,2011,35(13):88-91.
Li Feng,Xu Bingyin.Pulse emitting time selection algorithm for cable fault locator with arc reflection[J].Automation of Electric Power Systems,2011,35(13):88-91.
[11]李峰,徐丙垠,颜廷纯.电弧反射法电缆故障测距中的电弧建模与仿真[J].电力系统自动化,2014,38(11):104-108.
Li Feng,Xu Bingyin,Yan Tingchun.Modeling and simulating of arcs for cable fault location in arc mode[J].Automation of Electric Power Systems,2014,38(11):104-108.
[12]常文治,葛振东,时翔,等.振荡电压下电缆典型缺陷局部放电的统计特征及定位研究[J].电网技术,2013,37(3):746-752.
Chang Wenzhi,Ge Zhendong,Shi Xiang,et at.Statiistical characteristic and location of partial discharge caused by typical defects in power cable under damped oscillation voltage[J].Power System Technology,2013,37(3):746-752.
[13]唐昆明,唐辰旭,罗建,等.基于RLC模型参数辨识的配网电缆单相接地故障的单端时域测距方法[J].电力系统保护与控制,2014,42(4):54-60.
Tang Kunming,Tang Chenxu,Luo Jian,et al.A single-ended time domain fault loation method for distribution network cable single-phase earth fault based on RLC model parameter identification[J].Power System Protection and Control,2014,42(4):54-60.
[14]索南加乐,宋国兵,康小宁,等.基于单端电流的双回线时域故障定位方法[J].中国电机工程学报,2007,27(7):52-57.
Suonan Jiale,Song Guobing,Kang Xiaoning,et al.A time-domain fault location algorithm based on one-terminal current of parallel transmission lines[J].Proceeding of the CSEE,2007,27(7):52-57.
[15]Xu Z,Sidhu T S.Fault location method based on single-end measurements for underground cables[J].IEEE Transactions on Power Delivery,2011,26(4):2845-2854.
[16]Rafinia A,Moshtagh J.A new approach to fault location in three-phase underground distribution system using combination of wavelet analysis with ANN and FLS[J].Electrical Power and Energy Systems,2014,55(2):261-274.
[17]Todorovski M,Ackovski R.Equivalent circuit of single-core cable lines suitable for grounding systems analysis under line-to-ground fault[J].IEEE Transactions on Power Delivery,2014,29(2):751-759.
[18]Alamuti M M,Nouri H,Ciric R M,et al.Intermittent fault location in distribution feeders[J].IEEE Transactions on Power Delivery,2012,27(1):96-103.
[19]Kulkarni S,Santoso S,Short T A.Incipient fault location algorithm for underground cables[J].IEEE Transactions on Smart Grid,2014,5(3):1165-1174.
[20]Kulkarni S.Fault location and characterization in AC and DC power systems[D].Austin:The University of Texas at Austin,2012.
[21]束洪春,司大军,葛耀中.高压输电线路电弧故障检测与定位最小二乘法新解[J].电工技术学报,2000,15(5):63-68.
Shu Hongchun,Si Dajun,Ge Yaozhong.A new least error square method for detecting and locating arc fault in EHV transmission line[J].Transactions of China Electrotechnical Society,2000,15(5):63-68.
[22]王钢,徐子利,梁远升,等.基于电弧方波曲线相似度的输电线路单端故障测距时域算法[J].电力系统保护与控制,2012,40(23):109-113.
Wang Gang,Xu Zili,Liang Yuansheng,et al.Single terminal time domain fault location method based on the similarity of square wave for arc grounding fault[J].Power System Protection and Control,2012,40(23):109-113.