行波故障定位装置闭锁策略探讨
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摘要
为了得到合适的双端行波故障定位算法闭锁策略,使其能够屏蔽后续折反射波头的同时尽快开放测距算法,对行波在线路上的折反射进行了分析。分析了各种波阻抗不连续点处的电流折反射系数,计算出区内故障、正向区外故障、反向区外故障情况下的后续折反射波头与故障初始波头的时间-幅值关系。给出了一种合理的闭锁策略:在故障发生后5 ms内闭锁故障测距,5～40 ms内闭锁大于故障初始波头60%的波头,40 ms之后开放故障测距。通过最后的EMTP仿真分析证明了该闭锁策略的有效性。
In order to obtain an appropriate blocking algorithm of double terminal travelling wave fault location, so that it can block the subsequent catadioptric wave and open the fault location algorithm as soon as possible, this paper analyzes the refraction and reflection of the traveling wave on the line. It analyzes all kinds of the current reflection and refraction coefficients at surge impedance discontinuous point, and calculates the time-amplitude relationship between the initial wave front and the subsequent catadioptric wave front in the internal fault, forward external fault and reverse external fault. It provides an appropriate blocking algorithm: block the fault location in 5 ms after fault occurring, block the wave front that greater than 60% initial wave front in 5～40 ms, and open fault location after 40 ms. At last, the EMTP simulation proves the effectiveness of the blocking algorithm.
In order to obtain an appropriate blocking algorithm of double terminal travelling wave fault location, so that it can block the subsequent catadioptric wave and open the fault location algorithm as soon as possible, this paper analyzes the refraction and reflection of the traveling wave on the line. It analyzes all kinds of the current reflection and refraction coefficients at surge impedance discontinuous point, and calculates the time-amplitude relationship between the initial wave front and the subsequent catadioptric wave front in the internal fault, forward external fault and reverse external fault. It provides an appropriate blocking algorithm: block the fault location in 5 ms after fault occurring, block the wave front that greater than 60% initial wave front in 5～40 ms, and open fault location after 40 ms. At last, the EMTP simulation proves the effectiveness of the blocking algorithm.
引文
[1]高淑萍,索南加乐,宋国兵,等.基于分布参数模型的直流输电线路故障测距方法[J].中国电机工程学报,2010,30(13):75-80.GAO Shuping,SUONAN Jiale,SONG Guobing,et al.Fault location method for HVDC transmission lines on the basis of the distributed parameter model[J].Proceedings of the CSEE,2010,30(13):75-80.
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[7]DENG Feng,ZENG Xiangjun,PAN Lanlan.Research on multi-terminal traveling wave fault location method in complicated networks based on cloud computing platform[J].Protection and Control of Modern Power Systems,2017,2(2):199-210.DOI:10.1186/s41601-017-0042-4.
[8]高艳丰,朱永利,闫红艳,等.一种新型的输电线路双端行波故障定位方法[J].电力系统保护与控制,2016,44(8):8-13.GAO Yanfeng,ZHU Yongli,YAN Hongyan,et al.A new fault location method of transmission lines based on double-terminal traveling wave[J].Power System Protection and Control,2016,44(8):8-13.
[9]李振兴,吴李群,田斌,等.不同步双端数据修正波速的单端行波测距算法研究[J].电力系统保护与控制,2017,45(8):16-22.LI Zhenxing,WU Liqun,TIAN Bin,et al.Singleterminal traveling wave location algorithm based on amending wave velocity[J].Power System Protection and Control,2017,45(8):16-22.
[10]刘顺桂,李勋,张宏钊,等.一种采用时间判别法的混合线路故障行波定位方法[J].电力系统保护与控制,2017,45(1):41-46.LIU Shungui,LI Xun,ZHANG Hongzhao,et al.Atraveling wave fault location method of hybrid line using time discrimination[J].Power System Protection and Control,2017,45(1):41-46.
[11]何晓,雷勇,周聪聪,等.消除零模波速影响的配电网单端行波故障测距算法[J].电力系统保护与控制,2016,44(23):39-45.HE Xiao,LEI Yong,ZHOU Congcong,et al.Asingle-terminal fault location algorithm in distribution network for eliminating the effect of the velocity of zero-mode traveling wave[J].Power System Protection and Control,2016,44(23):39-45.
[12]高效海,苏晓龙.一种新的单端行波测距方法[J].电力系统保护与控制,2016,44(12):87-91.GAO Xiaohai,SU Xiaolong.A new method for singleended traveling wave fault location[J].Power System Protection and Control,2016,44(12):87-91.
[13]仇小勇.XC-2000行波测距装置测距成功率的提高[J].江苏电机工程,2005(4):60-61.QIU Xiaoyong.Improvement of success ration of XC-2000travelling wave fault location device[J].Jiangsu Electrical Engineering,2005(4):60-61.
[14]魏萌.行波测距装置测距性能测试分析及新型双端法研究[D].昆明:昆明理工大学,2016.WEI Meng.The test and analysis of traveling wave fault location device and research on new double-terminal location method[D].Kunming:Kunming University of Science and Technology,2016.
[15]禹超.行波测距装置在输电线路故障定位中的应用分析[J].电工技术,2014(12):13-14.YU Chao.Application of traveling wave location device in fault location of transmission lines[J].Electric Engineering,2014(12):13-14.
[16]覃剑,陈祥训,郑健超,等.利用小波变换的双端行波测距新方法[J].中国电机工程学报,2000,20(8):7-11.QIN Jian,CHEN Xiangxun,ZHENG Jianchao,et al.Anew double terminal method of travelling wave fault location using wavelet transform[J].Proceedings of the CSEE,2000,20(8):7-11.
[17]覃剑,彭莉萍,王和春.基于小波变换技术的输电线路单端行波故障测距[J].电力系统自动化,2005,29(19):62-65,86.QIN Jian,PENG Liping,WANG Hechun.Single terminal methods of traveling wave fault location in transmission line using wavelet transform[J].Automation of Electric Power Systems,2005,29(19):62-65,86.
[18]江雪晨,张翠玲,宁一.基于透射模量的第2个反向行波性质识别方法[J].高压电器,2017,53(4):122-128,136.JIANG Xuechen,ZHANG Cuiling,NING Yi.Identification method for the nature of the second reverse traveling wave based on the cross coupling modulus[J].High Voltage Apparatus,2017,53(4):122-128,136.
[19]张广斌,束洪春,于继来,等.220 kV电网电流行波测距装置的优化布点方法[J].中国电机工程学报,2014,34(34):6246-6253.ZHANG Guangbin,SHU Hongchun,YU Jilai,et al.Optimal placement of traveling wave current fault location devices in 220 kV power grid[J].Proceedings of the CSEE,2014,34(34):6246-6253.
[20]方夏.电流型行波装置优化布局研究[D].昆明:昆明理工大学,2016.FANG Xia.Study on optimal layout of current traveling wave location devices[D].Kunming:Kunming University of Science and Technology,2016.
[21]钱海,贾松江,李治兵,等.基于历史故障波形的行波测距装置检验方法[J].电力系统保护与控制,2013,41(16):139-143.QIAN Hai,JIA Songjiang,LI Zhibing,et al.Inspection of traveling wave fault location equipment based on the historical fault waveforms[J].Power System Protection and Control,2013,41(16):139-143.
[22]于华楠,马聪聪,王鹤.基于压缩感知估计行波自然频率的输电线路故障定位方法研究[J].电工技术学报,2017,32(23):140-148.YU Huanan,MA Congcong,WANG He.Transimission line fault location method based on compressed sensing estimation of traveling wave natural frequencies[J].Transactions of China Electrotechnical Society,2017,32(23):140-148.
[23]贾惠彬,苏思岚,李明舒,等.考虑线路参数频变特性的小波域行波信号奇异性增强方法[J].电工技术学报,2017,32(15):153-160.JIA Huibin,SU Silan,LI Mingshu,et al.A singularity enhancement method in wavelet domain for travelingwave with considering frequency characteristic of line parameter[J].Transactions of China Electrotechnical Society,2017,32(15):153-160.
[24]何金良.时频电磁暂态分析理论与方法[M].北京:清华大学出版社,2015.
[25]王世勇.基于极化电流行波的方向比较式纵联保护研究[D].北京:清华大学,2011.WANG Shiyong.Studies on directional comparison pilot protection based on polarized current travelling wave[D].Beijing:Tsinghua University,2011.
[26]施慎行,董新洲,周双喜.单相接地故障行波分析[J].电力系统自动化,2005,29(23):29-32,53.SHI Shenxing,DONG Xinzhou,ZHOU Shuangxi.Analysis of single-phase-to-ground fault generated traveling waves[J].Automation of Electric Power Systems,2005,29(23):29-32,53.
[2]丁晓兵,陈玉林,史泽兵,等.线路保护行波测距一体化装置设计与关键技术研究[J].南方电网技术,2017,11(6):57-62.DING Xiaobing,CHEN Yulin,SHI Zebing,et al.Research on integrated device of transmission line protection and traveling wave fault location[J].Southern Power System Technology,2017,11(6):57-62.
[3]于华楠,马聪聪,王鹤.基于压缩感知估计行波自然频率的输电线路故障定位方法研究[J].电工技术学报,2017,32(23):140-148.YU Huanan,MA Congcong,WANG He.Transmission line fault location method based on compressed sensing estimation of traveling wave natural frequencies[J].Transactions of China Electrotechnical Society,2017,32(23):140-148.
[4]李聪聪.交流输电线路双端行波测距方法研究[D].济南:山东大学,2017.LI Congcong.Studies on fault location method for ACtransmission line based on double-end traveling wave[D].Jinan:Shandong University,2017.
[5]王博,谷昌瑞,吉晓筱,等.基于多点故障行波检测的改进分布式故障测距方法研究[J].电力工程技术,2017,36(5):120-127.WANG Bo,GU Changrui,JI Xiaoxiao,et al.Research on improved distributed fault location method based on multi-point fault's traveling wave detection[J].Electric Power Engineering Technology,2017,36(5):120-127.
[6]郝勇奇,王倩,周士琼,等.基于LMD与Teager能量算子的VSC-HVDC输电线路故障定位[J].电力系统保护与控制,2017,45(1):81-88.HAO Yongqi,WANG Qian,ZHOU Shiqiong,et al.Fault location for VSC-HVDC transmission lines based on LMD and Teager energy operator[J].Power System Protection and Control,2017,45(1):81-88.
[7]DENG Feng,ZENG Xiangjun,PAN Lanlan.Research on multi-terminal traveling wave fault location method in complicated networks based on cloud computing platform[J].Protection and Control of Modern Power Systems,2017,2(2):199-210.DOI:10.1186/s41601-017-0042-4.
[8]高艳丰,朱永利,闫红艳,等.一种新型的输电线路双端行波故障定位方法[J].电力系统保护与控制,2016,44(8):8-13.GAO Yanfeng,ZHU Yongli,YAN Hongyan,et al.A new fault location method of transmission lines based on double-terminal traveling wave[J].Power System Protection and Control,2016,44(8):8-13.
[9]李振兴,吴李群,田斌,等.不同步双端数据修正波速的单端行波测距算法研究[J].电力系统保护与控制,2017,45(8):16-22.LI Zhenxing,WU Liqun,TIAN Bin,et al.Singleterminal traveling wave location algorithm based on amending wave velocity[J].Power System Protection and Control,2017,45(8):16-22.
[10]刘顺桂,李勋,张宏钊,等.一种采用时间判别法的混合线路故障行波定位方法[J].电力系统保护与控制,2017,45(1):41-46.LIU Shungui,LI Xun,ZHANG Hongzhao,et al.Atraveling wave fault location method of hybrid line using time discrimination[J].Power System Protection and Control,2017,45(1):41-46.
[11]何晓,雷勇,周聪聪,等.消除零模波速影响的配电网单端行波故障测距算法[J].电力系统保护与控制,2016,44(23):39-45.HE Xiao,LEI Yong,ZHOU Congcong,et al.Asingle-terminal fault location algorithm in distribution network for eliminating the effect of the velocity of zero-mode traveling wave[J].Power System Protection and Control,2016,44(23):39-45.
[12]高效海,苏晓龙.一种新的单端行波测距方法[J].电力系统保护与控制,2016,44(12):87-91.GAO Xiaohai,SU Xiaolong.A new method for singleended traveling wave fault location[J].Power System Protection and Control,2016,44(12):87-91.
[13]仇小勇.XC-2000行波测距装置测距成功率的提高[J].江苏电机工程,2005(4):60-61.QIU Xiaoyong.Improvement of success ration of XC-2000travelling wave fault location device[J].Jiangsu Electrical Engineering,2005(4):60-61.
[14]魏萌.行波测距装置测距性能测试分析及新型双端法研究[D].昆明:昆明理工大学,2016.WEI Meng.The test and analysis of traveling wave fault location device and research on new double-terminal location method[D].Kunming:Kunming University of Science and Technology,2016.
[15]禹超.行波测距装置在输电线路故障定位中的应用分析[J].电工技术,2014(12):13-14.YU Chao.Application of traveling wave location device in fault location of transmission lines[J].Electric Engineering,2014(12):13-14.
[16]覃剑,陈祥训,郑健超,等.利用小波变换的双端行波测距新方法[J].中国电机工程学报,2000,20(8):7-11.QIN Jian,CHEN Xiangxun,ZHENG Jianchao,et al.Anew double terminal method of travelling wave fault location using wavelet transform[J].Proceedings of the CSEE,2000,20(8):7-11.
[17]覃剑,彭莉萍,王和春.基于小波变换技术的输电线路单端行波故障测距[J].电力系统自动化,2005,29(19):62-65,86.QIN Jian,PENG Liping,WANG Hechun.Single terminal methods of traveling wave fault location in transmission line using wavelet transform[J].Automation of Electric Power Systems,2005,29(19):62-65,86.
[18]江雪晨,张翠玲,宁一.基于透射模量的第2个反向行波性质识别方法[J].高压电器,2017,53(4):122-128,136.JIANG Xuechen,ZHANG Cuiling,NING Yi.Identification method for the nature of the second reverse traveling wave based on the cross coupling modulus[J].High Voltage Apparatus,2017,53(4):122-128,136.
[19]张广斌,束洪春,于继来,等.220 kV电网电流行波测距装置的优化布点方法[J].中国电机工程学报,2014,34(34):6246-6253.ZHANG Guangbin,SHU Hongchun,YU Jilai,et al.Optimal placement of traveling wave current fault location devices in 220 kV power grid[J].Proceedings of the CSEE,2014,34(34):6246-6253.
[20]方夏.电流型行波装置优化布局研究[D].昆明:昆明理工大学,2016.FANG Xia.Study on optimal layout of current traveling wave location devices[D].Kunming:Kunming University of Science and Technology,2016.
[21]钱海,贾松江,李治兵,等.基于历史故障波形的行波测距装置检验方法[J].电力系统保护与控制,2013,41(16):139-143.QIAN Hai,JIA Songjiang,LI Zhibing,et al.Inspection of traveling wave fault location equipment based on the historical fault waveforms[J].Power System Protection and Control,2013,41(16):139-143.
[22]于华楠,马聪聪,王鹤.基于压缩感知估计行波自然频率的输电线路故障定位方法研究[J].电工技术学报,2017,32(23):140-148.YU Huanan,MA Congcong,WANG He.Transimission line fault location method based on compressed sensing estimation of traveling wave natural frequencies[J].Transactions of China Electrotechnical Society,2017,32(23):140-148.
[23]贾惠彬,苏思岚,李明舒,等.考虑线路参数频变特性的小波域行波信号奇异性增强方法[J].电工技术学报,2017,32(15):153-160.JIA Huibin,SU Silan,LI Mingshu,et al.A singularity enhancement method in wavelet domain for travelingwave with considering frequency characteristic of line parameter[J].Transactions of China Electrotechnical Society,2017,32(15):153-160.
[24]何金良.时频电磁暂态分析理论与方法[M].北京:清华大学出版社,2015.
[25]王世勇.基于极化电流行波的方向比较式纵联保护研究[D].北京:清华大学,2011.WANG Shiyong.Studies on directional comparison pilot protection based on polarized current travelling wave[D].Beijing:Tsinghua University,2011.
[26]施慎行,董新洲,周双喜.单相接地故障行波分析[J].电力系统自动化,2005,29(23):29-32,53.SHI Shenxing,DONG Xinzhou,ZHOU Shuangxi.Analysis of single-phase-to-ground fault generated traveling waves[J].Automation of Electric Power Systems,2005,29(23):29-32,53.
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