一种综合应用工频法和行波法的组合故障测距法
|
摘要
为提高输电线路的故障测距性能,笔者综合分析了工频法和行波法二者之间的测距特点,并提出了一种综合应用工频量法和单端行波法的组合故障测距法。首先,基于输电线路的沿线电压幅值分布规律,利用切线交叉的工频测距原理,初步确定故障区域,接着,在此基础上用A型行波法精确地测出故障位置。通过引入行波测距避免工频测距后续的迭代计算,克服迭代不收敛或收敛至伪根的问题,提高测距精度;用工频初步测距,缩小行波波头辨识范围,提高行波测距可靠性。经仿真验证:所提组合法比工频法测距精度更高,比行波法的波头识别更加准确可靠。
In order to improves the performance of ranging,by comprehensive analysis the characteristics of mainfrequency parameters fault location method and traveling wave method,this paper presents a new method whichtakes into account the characteristics and application of those two fault location methods. First,based on the voltagedistributon along the transmission line,according the tangent intersection of two voltage distribution curve to recog-nize the fault distance approximately,then obtained the accurate location results by A-type traveling-wave method.The proposed method by introducing traveling wave to evades the iterative calculation of frequency parameters faultlocation,keeps clear of false root or no convergence;use main frequency parameters method to narrow the search fur-ther,overcomes the difficulty in recognizing traveling-wave fronts. The simulation indicates that the proposed meth-od not only have higher precision than main frequency parameters method,but also have the ability to accuratelyidentify wave fronts.
In order to improves the performance of ranging,by comprehensive analysis the characteristics of mainfrequency parameters fault location method and traveling wave method,this paper presents a new method whichtakes into account the characteristics and application of those two fault location methods. First,based on the voltagedistributon along the transmission line,according the tangent intersection of two voltage distribution curve to recog-nize the fault distance approximately,then obtained the accurate location results by A-type traveling-wave method.The proposed method by introducing traveling wave to evades the iterative calculation of frequency parameters faultlocation,keeps clear of false root or no convergence;use main frequency parameters method to narrow the search fur-ther,overcomes the difficulty in recognizing traveling-wave fronts. The simulation indicates that the proposed meth-od not only have higher precision than main frequency parameters method,but also have the ability to accuratelyidentify wave fronts.
引文
[1]葛耀中.新型继电保护和故障测距的原理与技术[M].第二版.西安:西安交通大学出版社,2007:145-168.GE Yaozhong.New relay protection and fault location principle and technology[M].2nd ed.Xi’an:Xi’an Jiaotong University Press,2007:l45-168.
[2]刘玉萍,林圣,何文,等.动态条件下基于在线参数估计的故障定位算法[J].电力系统自动化,2013,37(13):103-108.LIU Yuping,LIN Sheng,HE Wen,et al.A fault location method based on online parameter estimation under dynamic conditions[J].Automation of Electric Power Systems,2013,37(13):103-108.
[3]林富洪,王增平.采用同向正序基频分量的双回线故障测距原理[J].中国电机工程学报,2011,31(4):93-98.LIN Fuhong,WANG Zengping.Fault locating method based on two terminal common positive sequence fundamental frequency component for parallel transmission line[J].Proceedings of the CSEE,2011,31(4):93-98.
[4]马静,史宇欣.基于分布参数的同杆双回线跨线及接地故障单端定位方法[J].电网技术,2014,38(9):2525-2531.MA Jing,SHI Yuxin.Distributed parameter based one-end fault location for inter line fault and earth fault in double circuit transmission lines on same tower[J].Power System Technology,2014,38(9):2525-2531.
[5]梁睿,孙式想.单端行波故障测距的组合方法研究[J].电网技术,2013,37(3):699-706.LIANG Rui,SUN Shixiang.A combined method for single ended traveling wave fault location[J].Power System Technology,2013,37(3):699-706.
[6]李永坚,黄绍平,唐剑东.几种工频双端测距算法对测量误差的适应性研究[J].电力系统保护与控制,2010,38(14):134-139.LI Yongjian,HUANG Shaoping,TANG Jiandong.Research on adaptability to measurement error for several two-terminal fault location algorithms[J].Power System Protection and Control,2010,38(14):134-139.
[7]康小宁,索南加乐.求解频域参数方程的双端故障测距原理[J].电力系统自动化,2005,29(10):16-20.KANG Xiaoning,SOUNAN Jiale.Frequency domain fault location method based on the transmission line prameter identification using two terminal data[J].Automation of Electric Power Systems,2005,29(10):16-20.
[8]束洪春,司大军,葛耀中,等.利用双端不同步数据的高压输电线路故障测距实用算法及其实现[J].电网技术,2000,24(2),45-49.SHU Hongchun,SI Dajun,GE Yaozhong,et al.Study on practical fault location algorithm for two-terminal HV and EHV transmission lines using asynchronous data at both ends[J].Power System Technology,2000,24(2):45-49.
[9]桂勋,刘志刚.基于高压输电线电压沿线分布规律的故障双端测距算法[J].中国电机工程学报,2009,29(19):63-69.GUI Xun,LIU Zhigang.An accurate algorithm of two terminal fault location based on the distribution of line voltage along HV transmission line[J].Proceedings of the CSEE,2009,29(19):63-69.
[10]覃剑.输电线路单端行波故障测距的研究[J].电网技术,2005,29(15):65-70.QIN Jian.Study on single terminal traveling wave fault location of transmission line[J].Power System Technology,2005,29(15):65-70.
[11]何军娜,陈剑云,艾颖梅,等.电力系统行波测距方法及其发展[J].电力系统保护与控制,2014,42(24):148-154.HE Junna,CHEN Jianyun,AI Yingmei,et al.Fault location methods based on traveling wave theory for power system and its development[J].Power System Protection and Control,2014,42(24):148-154.
[12]马丹丹,王小茹.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 wave fault location based on wavelet modulus maxima[J].Power System Protection and Control,2009,37(3):55-59.
[13]张小丽,曾祥君,马洪江,等.基于Hilbert-Huang变换的电网故障行波定位方法[J].电力系统自动化,2008,32(8):64-68.ZHANG Xiaoli,ZENG Xiangjun,MA Hongjiang,et al.Power grid faults location with traveling wave based on HilbertHuang transform[J].Automation of Electric Power Systems,2008,32(8):64-68.
[14]梁远升,王钢,李海锋.双端不同步线路参数自适应时频域故障测距算法[J].电力系统自动化,2009,33(4):62-66.LIANG Yuansheng,WANG Gang,LI Haifeng.Fault location algorithm based on time-frequency-domain with two terminals asynchronous[J].Automation of Electric Power Systems,2009,33(4):62-66.
[15]张峰,梁军,李建超,等.基于初始反极性行波检测的单端故障测距算法[J].电力系统自动化,2013,37(4):108-113.ZHANG Feng,LIANG Jun,LI Jianchao,et al.Single ended fault location algorithm based on detection of initial of initial reverse polarity traveling wave[J].Automation of Electric Power Systems,2013,37(4):108-113.
[16]许东升,田凤兰,赵珩,等.电力电缆故障现场测距方法的研究与应用[J].高压电器,2009,45(5):136.XU Dongsheng,TIAN Fenglan,ZHAO Heng,et al.Research and application of power cable fault diagnostic method[J].High Voltage Apparatus,2009,45(5):136.
[17]许飞,董新洲,王宾,等.新型输电线路单端电气量组合故障测距方法及其试验研究[J].电力自动化设备,2014,34(4):37-42.XU Fei,DONG Xinzhou,WANG Bin,et al.Combined single end fault location method of transmission line and its experiments[J].Electric Power Automation Equipment,2014,34(4):37-42.
[18]吴骏,王震,袁海星,等.基于物联网技术的配电网故障定位研究[J].高压电器,2015,51(12):72-78.WU Jun,WANG Zhen,YUAN Haixing,et al.Study on the fault location of the distribution system based on internet of things[J].High Voltage Apparatus,2015,51(12):72-78.
[19]蒋小平,张红菊,马速良,等.特高压带高压并联电抗器线路的行波差动保护研究[J].高压电器,2016,52(2):121-127.JING Xiaoping,ZHANG Hongju,MA Suliang,et al.Study on travelingwave differential protection on UHV transmission line with high voltage shunt reactor[J].High Voltage Apparatus,2016,52(2):121-127.
[20]司马文霞,陈伟,杜林,等.基于输电网中故障行波分布和网络依赖图的故障定位算法[J].高压电器,2010,46(6):45.SIMA Wenxia,CHEN Wei,DU Lin,et al.A fault location method of high voltage grid transmission line based on overvoltage online monitoring signal[J].High Voltage Apparatus,2010,46(6):45.
[21]覃剑.影响输电线路行波故障测距精度的主要因素分析[J].电网技术,2007,31(2):28-35.QIN Jian.Analysis on main influencing factors for transmission lines fault location precision based on traveling wave[J].Power System Technology,2007,31(2):28-35.
[2]刘玉萍,林圣,何文,等.动态条件下基于在线参数估计的故障定位算法[J].电力系统自动化,2013,37(13):103-108.LIU Yuping,LIN Sheng,HE Wen,et al.A fault location method based on online parameter estimation under dynamic conditions[J].Automation of Electric Power Systems,2013,37(13):103-108.
[3]林富洪,王增平.采用同向正序基频分量的双回线故障测距原理[J].中国电机工程学报,2011,31(4):93-98.LIN Fuhong,WANG Zengping.Fault locating method based on two terminal common positive sequence fundamental frequency component for parallel transmission line[J].Proceedings of the CSEE,2011,31(4):93-98.
[4]马静,史宇欣.基于分布参数的同杆双回线跨线及接地故障单端定位方法[J].电网技术,2014,38(9):2525-2531.MA Jing,SHI Yuxin.Distributed parameter based one-end fault location for inter line fault and earth fault in double circuit transmission lines on same tower[J].Power System Technology,2014,38(9):2525-2531.
[5]梁睿,孙式想.单端行波故障测距的组合方法研究[J].电网技术,2013,37(3):699-706.LIANG Rui,SUN Shixiang.A combined method for single ended traveling wave fault location[J].Power System Technology,2013,37(3):699-706.
[6]李永坚,黄绍平,唐剑东.几种工频双端测距算法对测量误差的适应性研究[J].电力系统保护与控制,2010,38(14):134-139.LI Yongjian,HUANG Shaoping,TANG Jiandong.Research on adaptability to measurement error for several two-terminal fault location algorithms[J].Power System Protection and Control,2010,38(14):134-139.
[7]康小宁,索南加乐.求解频域参数方程的双端故障测距原理[J].电力系统自动化,2005,29(10):16-20.KANG Xiaoning,SOUNAN Jiale.Frequency domain fault location method based on the transmission line prameter identification using two terminal data[J].Automation of Electric Power Systems,2005,29(10):16-20.
[8]束洪春,司大军,葛耀中,等.利用双端不同步数据的高压输电线路故障测距实用算法及其实现[J].电网技术,2000,24(2),45-49.SHU Hongchun,SI Dajun,GE Yaozhong,et al.Study on practical fault location algorithm for two-terminal HV and EHV transmission lines using asynchronous data at both ends[J].Power System Technology,2000,24(2):45-49.
[9]桂勋,刘志刚.基于高压输电线电压沿线分布规律的故障双端测距算法[J].中国电机工程学报,2009,29(19):63-69.GUI Xun,LIU Zhigang.An accurate algorithm of two terminal fault location based on the distribution of line voltage along HV transmission line[J].Proceedings of the CSEE,2009,29(19):63-69.
[10]覃剑.输电线路单端行波故障测距的研究[J].电网技术,2005,29(15):65-70.QIN Jian.Study on single terminal traveling wave fault location of transmission line[J].Power System Technology,2005,29(15):65-70.
[11]何军娜,陈剑云,艾颖梅,等.电力系统行波测距方法及其发展[J].电力系统保护与控制,2014,42(24):148-154.HE Junna,CHEN Jianyun,AI Yingmei,et al.Fault location methods based on traveling wave theory for power system and its development[J].Power System Protection and Control,2014,42(24):148-154.
[12]马丹丹,王小茹.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 wave fault location based on wavelet modulus maxima[J].Power System Protection and Control,2009,37(3):55-59.
[13]张小丽,曾祥君,马洪江,等.基于Hilbert-Huang变换的电网故障行波定位方法[J].电力系统自动化,2008,32(8):64-68.ZHANG Xiaoli,ZENG Xiangjun,MA Hongjiang,et al.Power grid faults location with traveling wave based on HilbertHuang transform[J].Automation of Electric Power Systems,2008,32(8):64-68.
[14]梁远升,王钢,李海锋.双端不同步线路参数自适应时频域故障测距算法[J].电力系统自动化,2009,33(4):62-66.LIANG Yuansheng,WANG Gang,LI Haifeng.Fault location algorithm based on time-frequency-domain with two terminals asynchronous[J].Automation of Electric Power Systems,2009,33(4):62-66.
[15]张峰,梁军,李建超,等.基于初始反极性行波检测的单端故障测距算法[J].电力系统自动化,2013,37(4):108-113.ZHANG Feng,LIANG Jun,LI Jianchao,et al.Single ended fault location algorithm based on detection of initial of initial reverse polarity traveling wave[J].Automation of Electric Power Systems,2013,37(4):108-113.
[16]许东升,田凤兰,赵珩,等.电力电缆故障现场测距方法的研究与应用[J].高压电器,2009,45(5):136.XU Dongsheng,TIAN Fenglan,ZHAO Heng,et al.Research and application of power cable fault diagnostic method[J].High Voltage Apparatus,2009,45(5):136.
[17]许飞,董新洲,王宾,等.新型输电线路单端电气量组合故障测距方法及其试验研究[J].电力自动化设备,2014,34(4):37-42.XU Fei,DONG Xinzhou,WANG Bin,et al.Combined single end fault location method of transmission line and its experiments[J].Electric Power Automation Equipment,2014,34(4):37-42.
[18]吴骏,王震,袁海星,等.基于物联网技术的配电网故障定位研究[J].高压电器,2015,51(12):72-78.WU Jun,WANG Zhen,YUAN Haixing,et al.Study on the fault location of the distribution system based on internet of things[J].High Voltage Apparatus,2015,51(12):72-78.
[19]蒋小平,张红菊,马速良,等.特高压带高压并联电抗器线路的行波差动保护研究[J].高压电器,2016,52(2):121-127.JING Xiaoping,ZHANG Hongju,MA Suliang,et al.Study on travelingwave differential protection on UHV transmission line with high voltage shunt reactor[J].High Voltage Apparatus,2016,52(2):121-127.
[20]司马文霞,陈伟,杜林,等.基于输电网中故障行波分布和网络依赖图的故障定位算法[J].高压电器,2010,46(6):45.SIMA Wenxia,CHEN Wei,DU Lin,et al.A fault location method of high voltage grid transmission line based on overvoltage online monitoring signal[J].High Voltage Apparatus,2010,46(6):45.
[21]覃剑.影响输电线路行波故障测距精度的主要因素分析[J].电网技术,2007,31(2):28-35.QIN Jian.Analysis on main influencing factors for transmission lines fault location precision based on traveling wave[J].Power System Technology,2007,31(2):28-35.