基于能量比法的输电线路行波故障测距
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摘要
输电线路行波故障测距的关键在于对故障行波波头的识别和定位。为实现准确故障测距,应用一种新的信号处理方法,从行波能量的角度出发,利用时窗滚动计算的能量比函数法来处理故障行波,以此计算波头时延,实现故障测距。研究了不同时间窗宽度对定位准确度的影响,以此选择合理的时间窗进行能量比计算,并分析了复杂环境干扰下能量比法的测距精度。ATP/EMTP仿真试验数据处理结果表明,该方法准确有效,而且计算简便快捷,在低信噪比环境下有很好的抗干扰能力。
The crux of traveling wave fault location for transmission lines is the identification and location of the wave front of fault generated traveling wave.To implement accurate fault location,a new signal processing method is utilized,i.e.,from the viewpoint of traveling wave energy the fault generated traveling wave is processed by the energy ratio function obtained from time-window continuous calculation,thus the time-delay of wave front can be calculated and fault location is implemented.The influences of different time-window widths on location accuracy is researched and on this basis rational time-window is chosen for the calculation of energy ratio,meanwhile the accuracy of fault location by energy ratio under complex environmental interference is analyzed.Processing results of ATP/EMTP simulation data show that the proposed method is accurate and effective,and the calculation is simple,convenient and rapid,besides,it possesses satisfied anti-interference ability in the environment with low S/N ratio.
The crux of traveling wave fault location for transmission lines is the identification and location of the wave front of fault generated traveling wave.To implement accurate fault location,a new signal processing method is utilized,i.e.,from the viewpoint of traveling wave energy the fault generated traveling wave is processed by the energy ratio function obtained from time-window continuous calculation,thus the time-delay of wave front can be calculated and fault location is implemented.The influences of different time-window widths on location accuracy is researched and on this basis rational time-window is chosen for the calculation of energy ratio,meanwhile the accuracy of fault location by energy ratio under complex environmental interference is analyzed.Processing results of ATP/EMTP simulation data show that the proposed method is accurate and effective,and the calculation is simple,convenient and rapid,besides,it possesses satisfied anti-interference ability in the environment with low S/N ratio.
引文
[1]王颖,王增平,潘明九.故障测距法在输电线路保护中的应用[J].电力自动化设备,2003,23(12):34-38.Wang Ying,Wang Zengping,Pan Mingjiu.Application of faultlocating in line protection[J].Electric Power Automation Equipment,2003,23(12):34-38(in Chinese).
[2]黄雄,尹项根,辛振涛.基于分布参数模型的平行双回线故障测距新算法[J].电力自动化设备,2003,23(11):5-8.Huang Xiong,Yin Xianggen,Xin Zhentao.Fault locating algorithmfor double-circuit line based on distributed parameter[J].ElectricPower Automation Equipment,2003,23(11):5-8(in Chinese).
[3]董新洲,葛耀中,徐丙垠.利用暂态电流行波的输电线路故障测距研究[J].中国电机工程学报,1999,19(4):76-80.Dong Xinzhou,Ge Yaozhong,Xu Bingyin.Research of fault locationbased on current traveling waves[J].Proceedings of the CSEE,1999,19(4):76-80(in Chinese).
[4]葛耀中.新型继电保护和故障测距的原理与技术[M].西安:西安交通大学出版社,2007:258-331.
[5]Poission Q,Rioual P,Meunier M.New signal processing toolsapplied to power quality analysis[J].IEEE Trans on Power Delivery,1999,14(2):561-566.
[6]马丹丹,王晓茹.基于小波模极大值的单端行波故障测距[J].电力系统保护与控制,2009,37(3):55-59.Ma Dandan,Wang Xiaoru.Single terminal methods of traveling wavefault location based on wavelet modulus maxima[J].Power SystemProtection and Control,2009,37(3):55-59(in Chinese).
[7]余畅,尹项根,曾祥君,等.基于小波分析的多尺度下综合行波故障定位[J].电力自动化设备,2001,21(6):6-9.Yu Chang,Yin Xianggen,Zeng Xiangjun,et al.Fault location basedon comprehensive wavelet analysis at different scales[J].ElectricPower Automation Equipment,2001,21(6):6-9(in Chinese).
[8]贝达物,皮尔索.相关分析与谱分析方法的工程应用[M].凌福根,译.北京:国防工业出版社,1983:47-60.
[9]毛汉领,陈仲仪,庄红宇.能量比时间延迟估计法及在定位中的应用[J].广西工学院学报,1994,5(2):12-16.Mao Hanling,Chen Zhongyi,Zhuang Hongyu.The time delayestimate on based on energy ration and its application on thelocalization[J].Journal of Guangxi Institute of Technology,1994,5(2):12-16(in Chinese).
[10]左国平,王彦春,隋荣亮.利用能量比法拾取地震初至的一种改进方法[J].石油物探,2004,43(4):35-37.Zuo Guoping,Wang Yanchun,Sui Rongliang.An improved methodfor first arrival pickup using energy ratio[J].Geophysical Prospectingfor Petroleum,2004,43(4):35-37(in Chinese).
[11]卢毅,姜玉磊,杨静.能量比函数法估算局部放电时延[J].高电压技术,2007,33(5):87-89.Lu Yi,Jiang Yulei,Yang Jing.Research on delay estimation of partialdischarges based on energy ratio function[J].High VoltageEngineering,2007,33(5):87-89(in Chinese).
[12]黄雄,王志华,尹项根.高压输电线路行波测距的行波波速确定方法[J].电网技术,2004,28(19):34-37.Huang Xiong,Wang Zhihua,Yin Xianggen.Travelling wave velocitymeasurement in fault location based on travelling wave for highvoltage transmission line[J].Power System Technology,2004,28(19):34-37(in Chinese).
[13]王勇,曹保定,姜涛.电子式互感器合并单元的快速数据处理[J].电网技术,2009,33(1):87-91.Wang Yong,Cao Baoding,Jiang Tao.Fast data processing formerging unit of electronic transformer[J].Power System Technology,2009,33(1):87-91(in Chinese).
[14]王昌长,李福琪,高胜友.电力设备的在线监测与故障诊断[M].北京:清华大学出版社,2006:251-273.
[15]全玉生,杨敏中,王晓蓉,等.高压架空输电线路的故障测距方法[J].电网技术,2000,24(4):27-33.Quan Yusheng,Yang Minzhong,Wang Xiaorong,et al.A faultlocation method for overhead high voltage power transmission lines[J].Power System Technology,2000,24(4):27-33(in Chinese).
[16]邬林勇,何正友,钱清泉.单端行波故障测距的频域方法[J].中国电机工程学报,2008,28(25):99-104.Wu Linyong,He Zhengyou,Qian Qingquan.A frequency domainapproach to sinle-ended traveling wave fault location[J].Proceedingsof the CSEE,2008,28(25):99-104(in Chinese).
[17]邬林勇,何正友,钱清泉.一种提取行波自然频率的单端故障测距方法[J].中国电机工程学报,2008,28(10):69-75.Wu Linyong,He Zhengyou,Qian Qingquan.A single ended faultlocation method using traveling wave natural frequency[J].Proceedings of the CSEE,2008,28(10):69-75(in Chinese).
[18]李友军,王俊生,郑玉平,等.几种行波测距算法的比较[J].电力系统自动化,2001,25(14):36-39.Li Youjun,Wang Junsheng,Zheng Yuping,et al.Comparison ofseveral algorithms of travelling wave base fault location[J].Automation of Electric Power Systems,2001,25(14):36-39(inChinese).
[19]郑州,吕艳萍,王杰,等.基于小波变换的双端行波测距新方法[J].电网技术,2010,34(1):203-207.Zheng Zhou,LüYanping,Wang Jie,et al.A new two-terminaltraveling wave fault location method based on wavelet transform[J].Power System Technology,2010,34(1):203-207(in Chinese).
[20]李廷伟,姬广展,王鹰,等.一种改进的输电线路双端行波故障测距系统[J].电网技术,2008,32(1):90-92.Li Tingwei,Ji Guangzhan,Wang Ying,et al.An improved doubletraveling wave fault location system for transmission line[J].PowerSystem Technology,2008,32(1):90-92(in Chinese).
[2]黄雄,尹项根,辛振涛.基于分布参数模型的平行双回线故障测距新算法[J].电力自动化设备,2003,23(11):5-8.Huang Xiong,Yin Xianggen,Xin Zhentao.Fault locating algorithmfor double-circuit line based on distributed parameter[J].ElectricPower Automation Equipment,2003,23(11):5-8(in Chinese).
[3]董新洲,葛耀中,徐丙垠.利用暂态电流行波的输电线路故障测距研究[J].中国电机工程学报,1999,19(4):76-80.Dong Xinzhou,Ge Yaozhong,Xu Bingyin.Research of fault locationbased on current traveling waves[J].Proceedings of the CSEE,1999,19(4):76-80(in Chinese).
[4]葛耀中.新型继电保护和故障测距的原理与技术[M].西安:西安交通大学出版社,2007:258-331.
[5]Poission Q,Rioual P,Meunier M.New signal processing toolsapplied to power quality analysis[J].IEEE Trans on Power Delivery,1999,14(2):561-566.
[6]马丹丹,王晓茹.基于小波模极大值的单端行波故障测距[J].电力系统保护与控制,2009,37(3):55-59.Ma Dandan,Wang Xiaoru.Single terminal methods of traveling wavefault location based on wavelet modulus maxima[J].Power SystemProtection and Control,2009,37(3):55-59(in Chinese).
[7]余畅,尹项根,曾祥君,等.基于小波分析的多尺度下综合行波故障定位[J].电力自动化设备,2001,21(6):6-9.Yu Chang,Yin Xianggen,Zeng Xiangjun,et al.Fault location basedon comprehensive wavelet analysis at different scales[J].ElectricPower Automation Equipment,2001,21(6):6-9(in Chinese).
[8]贝达物,皮尔索.相关分析与谱分析方法的工程应用[M].凌福根,译.北京:国防工业出版社,1983:47-60.
[9]毛汉领,陈仲仪,庄红宇.能量比时间延迟估计法及在定位中的应用[J].广西工学院学报,1994,5(2):12-16.Mao Hanling,Chen Zhongyi,Zhuang Hongyu.The time delayestimate on based on energy ration and its application on thelocalization[J].Journal of Guangxi Institute of Technology,1994,5(2):12-16(in Chinese).
[10]左国平,王彦春,隋荣亮.利用能量比法拾取地震初至的一种改进方法[J].石油物探,2004,43(4):35-37.Zuo Guoping,Wang Yanchun,Sui Rongliang.An improved methodfor first arrival pickup using energy ratio[J].Geophysical Prospectingfor Petroleum,2004,43(4):35-37(in Chinese).
[11]卢毅,姜玉磊,杨静.能量比函数法估算局部放电时延[J].高电压技术,2007,33(5):87-89.Lu Yi,Jiang Yulei,Yang Jing.Research on delay estimation of partialdischarges based on energy ratio function[J].High VoltageEngineering,2007,33(5):87-89(in Chinese).
[12]黄雄,王志华,尹项根.高压输电线路行波测距的行波波速确定方法[J].电网技术,2004,28(19):34-37.Huang Xiong,Wang Zhihua,Yin Xianggen.Travelling wave velocitymeasurement in fault location based on travelling wave for highvoltage transmission line[J].Power System Technology,2004,28(19):34-37(in Chinese).
[13]王勇,曹保定,姜涛.电子式互感器合并单元的快速数据处理[J].电网技术,2009,33(1):87-91.Wang Yong,Cao Baoding,Jiang Tao.Fast data processing formerging unit of electronic transformer[J].Power System Technology,2009,33(1):87-91(in Chinese).
[14]王昌长,李福琪,高胜友.电力设备的在线监测与故障诊断[M].北京:清华大学出版社,2006:251-273.
[15]全玉生,杨敏中,王晓蓉,等.高压架空输电线路的故障测距方法[J].电网技术,2000,24(4):27-33.Quan Yusheng,Yang Minzhong,Wang Xiaorong,et al.A faultlocation method for overhead high voltage power transmission lines[J].Power System Technology,2000,24(4):27-33(in Chinese).
[16]邬林勇,何正友,钱清泉.单端行波故障测距的频域方法[J].中国电机工程学报,2008,28(25):99-104.Wu Linyong,He Zhengyou,Qian Qingquan.A frequency domainapproach to sinle-ended traveling wave fault location[J].Proceedingsof the CSEE,2008,28(25):99-104(in Chinese).
[17]邬林勇,何正友,钱清泉.一种提取行波自然频率的单端故障测距方法[J].中国电机工程学报,2008,28(10):69-75.Wu Linyong,He Zhengyou,Qian Qingquan.A single ended faultlocation method using traveling wave natural frequency[J].Proceedings of the CSEE,2008,28(10):69-75(in Chinese).
[18]李友军,王俊生,郑玉平,等.几种行波测距算法的比较[J].电力系统自动化,2001,25(14):36-39.Li Youjun,Wang Junsheng,Zheng Yuping,et al.Comparison ofseveral algorithms of travelling wave base fault location[J].Automation of Electric Power Systems,2001,25(14):36-39(inChinese).
[19]郑州,吕艳萍,王杰,等.基于小波变换的双端行波测距新方法[J].电网技术,2010,34(1):203-207.Zheng Zhou,LüYanping,Wang Jie,et al.A new two-terminaltraveling wave fault location method based on wavelet transform[J].Power System Technology,2010,34(1):203-207(in Chinese).
[20]李廷伟,姬广展,王鹰,等.一种改进的输电线路双端行波故障测距系统[J].电网技术,2008,32(1):90-92.Li Tingwei,Ji Guangzhan,Wang Ying,et al.An improved doubletraveling wave fault location system for transmission line[J].PowerSystem Technology,2008,32(1):90-92(in Chinese).
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