基于雷击故障辨识的110 kV输电线路故障巡线策略
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摘要
雷击是造成输电线路故障的最主要因素之一,为了减轻频繁雷击故障带来的繁重巡检任务,该文提出一种基于雷击故障辨识的巡线策略。首先,测试常用类型绝缘子受雷击冲击后的耐压特性,发现雷击后绝缘子具有无明显下降的绝缘性能特征,为巡线策略的可行性提供试验基础;然后,基于故障行波时域和频域的波形特征,研究线路雷击故障类型的辨识方法;最后,结合试验和理论研究验证该文所提方法的可行性。在湖南某110 kV输电线路故障后,利用该文所述方法确定该线路为瞬时性雷击故障,无需巡线,有效降低了巡线成本。该文所提巡线策略可在保证供电可靠性的同时,有效减少巡检工作量,为输电线路运维工作提供基础数据和方法指导。
Lightning strike is one of the most important factors causing faults in transmission lines. In order to alleviate the heavy inspection tasks caused by frequent lightning strikes, the paper proposes a patrol strategy based on the lightning fault identification. Firstly, the voltage withstand characteristics of common types of insulators after lightning strikes are tested. It is found that the insulation characteristics of insulators don't drop significantly after lightning strikes, which provided a test basis for the feasibility of the inspection strategy. Then, the identification method of line lightning strike fault is obtained through the research on waveform characteristics of the time domain and frequency domain for the fault traveling wave. Finally, the feasibility of proposed method is verified by combining the experimental and theoretical research. A example of breakdown for a 110 kV transmission line in Hunan is simulated to verify this method. The cost of the inspection line is effectively reduced since it is no need to patrol the line to determine if the line has a transient lightning strike fault.The proposed patrol strategy not only effectively reduce the workload of inspection but also ensure the reliability of power supply.It provides basic data and method guidance for the operation and maintenance of transmission lines.
Lightning strike is one of the most important factors causing faults in transmission lines. In order to alleviate the heavy inspection tasks caused by frequent lightning strikes, the paper proposes a patrol strategy based on the lightning fault identification. Firstly, the voltage withstand characteristics of common types of insulators after lightning strikes are tested. It is found that the insulation characteristics of insulators don't drop significantly after lightning strikes, which provided a test basis for the feasibility of the inspection strategy. Then, the identification method of line lightning strike fault is obtained through the research on waveform characteristics of the time domain and frequency domain for the fault traveling wave. Finally, the feasibility of proposed method is verified by combining the experimental and theoretical research. A example of breakdown for a 110 kV transmission line in Hunan is simulated to verify this method. The cost of the inspection line is effectively reduced since it is no need to patrol the line to determine if the line has a transient lightning strike fault.The proposed patrol strategy not only effectively reduce the workload of inspection but also ensure the reliability of power supply.It provides basic data and method guidance for the operation and maintenance of transmission lines.
引文
[1]张志劲,蒋兴良,胡建林,等.运行中110 kV复合绝缘子电气性能变化分析[J].电网技术,2008,32(3):35-40.ZHANG Zhi-jing,JIANG Xing-liang,HU Jian-ling,et al.In the operation of the 110 kV electric composite insulator performance change analysis[J].Power System Technology,2008,32(3):35-40.
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[3]王剑,朱小红,李召兄,等.330 kV同塔双回线路过电压计算及分析[J].高电压技术,2011,37(10):2 450-2 457.WANG Jian,ZHU Xiao-hong,LI Zhao-xiong,et al.330 kV with double towers line overvoltage calculation and analysis[J].High Voltage Technology,2011,27(10):2 450-2 457.
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[6]DL/T 5092-1999.电力行业标准《110～500 kV架空送电线路设计技术规程》[S].
[7]李涵,周文俊,周世平,等.电力系统雷击远程在线监测系统[J].电力自动化设备,2010,30(8):125-129,133.LI Han,ZHOU Wen-jun,ZHOU Shi-ping,et al.Lightning remote online monitoring system in power systems[J].Electric Power Automation Equipment,2010,30(8):125-129,133.
[8]IEC 60060-1—1989.高电压试验技术1部分:一般定义和试验要求[S].
[9]GB/T 775.2—2003.绝缘子试验方法2部分:电气试验方法[S].
[10]姚陈果,吴昊,王琪龙,等.基于非接触式雷电流测量装置的新型线路分布式雷击故障定位方法[J].高电压技术,2014,40(9):2 897-2 902.YAO Chen-guo,WU Hao,WANG Qi-long,et al.Based on the non-contact measurement device of new type lightning current line distributed lightning fault location method[J].High Voltage Technology,2014,40(9):2 897-2 902.
[11]马仪,申元,王磊,等.基于行波理论的输电线路雷击定位方法研究与应用[J].高电压技术,2014,40(5):1 382-1 390.MA Yi,SHEN Yuan,WANG Lei,et al.Transmission line lightning locating method based on traveling wave theory research and application[J].High Voltage Technology,2014,40(5):1 382-1 390.
[12]陈家宏,赵淳,王剑,等.基于直接获取雷击参数的输电线路雷击风险优化评估方法[J].高电压技术,2015,41(10):14-20.CHEN Jia-hong,ZHAO Chun,WANG Jian,et al.Directly obtained based on lightning parameters of transmission line lightning risk optimization evaluation method[J].High Voltage Technology,2015,41(1):14-20.
[13]朱时阳,周文俊,邓雨荣,等.可记录多重雷击的雷电流波形在线监测装置研制[J].高电压技术,2013,39(11):2 699-2 705.ZHU Shi-yang,ZHOU Wen-jun,DENG Yu-rong,et al.Recordable multiple lightning lightning current waveform of the on-line monitoring device is developed[J].High Voltage Technology,2013,39(11):2 699-2 705.
[14]Patyk T,Guevorkian D,Pitkanen T,et al.Low-power application-specific FFT processor for LTE applications[C].In Embedded Computer Systems:International Conference on Architectures,Modeling and Simulation(SAMOS XIII),Prague,2013.
[15]Leigsnering M,Zoubir A M.Fast wideband near-field imaging using the non-equispaced FFT with application to through-wall radar[C].19th European Signal Processing Conference,Barcelona,Spain,2011.
[2]姚莉娜,吴颖晖,王少华,等.挂网运行复合绝缘子的电气及力学性能研究[J].绝缘材料,2015,48(8):23-27.YAO Li-na,WU Yin-hui,WANG Shao-hua,et al.Hang net running the electrical and mechanical performance of composite insulator[J].Insulating Material,2015,48(8):23-27.
[3]王剑,朱小红,李召兄,等.330 kV同塔双回线路过电压计算及分析[J].高电压技术,2011,37(10):2 450-2 457.WANG Jian,ZHU Xiao-hong,LI Zhao-xiong,et al.330 kV with double towers line overvoltage calculation and analysis[J].High Voltage Technology,2011,27(10):2 450-2 457.
[4]曾祥君,尹项根,林福昌,等.基于行波传感器的输电线路故障定位方法研究[J].中国电机工程学报,2002,22(6):42-46.ZENG Xiang-jun,YIN Xiang-gen,LIN Fu-chang,et al.Transmission line fault location method based on traveling wave sensor research[J].Proceedings of the CSEE,2002,22(6):42-46.
[5]李京,陈平.现代行波故障定位与实际故障分析中的应用原理[C].亚太电力与能源工程会议,武汉,2009.LI Jing,CHEN Ping.The principle of the modem travelling wave based on fault location and the applications to actual fault analysis[C].Asia-Pacific Power and Energy Engineering Conference in Wuhan,China,2009.
[6]DL/T 5092-1999.电力行业标准《110～500 kV架空送电线路设计技术规程》[S].
[7]李涵,周文俊,周世平,等.电力系统雷击远程在线监测系统[J].电力自动化设备,2010,30(8):125-129,133.LI Han,ZHOU Wen-jun,ZHOU Shi-ping,et al.Lightning remote online monitoring system in power systems[J].Electric Power Automation Equipment,2010,30(8):125-129,133.
[8]IEC 60060-1—1989.高电压试验技术1部分:一般定义和试验要求[S].
[9]GB/T 775.2—2003.绝缘子试验方法2部分:电气试验方法[S].
[10]姚陈果,吴昊,王琪龙,等.基于非接触式雷电流测量装置的新型线路分布式雷击故障定位方法[J].高电压技术,2014,40(9):2 897-2 902.YAO Chen-guo,WU Hao,WANG Qi-long,et al.Based on the non-contact measurement device of new type lightning current line distributed lightning fault location method[J].High Voltage Technology,2014,40(9):2 897-2 902.
[11]马仪,申元,王磊,等.基于行波理论的输电线路雷击定位方法研究与应用[J].高电压技术,2014,40(5):1 382-1 390.MA Yi,SHEN Yuan,WANG Lei,et al.Transmission line lightning locating method based on traveling wave theory research and application[J].High Voltage Technology,2014,40(5):1 382-1 390.
[12]陈家宏,赵淳,王剑,等.基于直接获取雷击参数的输电线路雷击风险优化评估方法[J].高电压技术,2015,41(10):14-20.CHEN Jia-hong,ZHAO Chun,WANG Jian,et al.Directly obtained based on lightning parameters of transmission line lightning risk optimization evaluation method[J].High Voltage Technology,2015,41(1):14-20.
[13]朱时阳,周文俊,邓雨荣,等.可记录多重雷击的雷电流波形在线监测装置研制[J].高电压技术,2013,39(11):2 699-2 705.ZHU Shi-yang,ZHOU Wen-jun,DENG Yu-rong,et al.Recordable multiple lightning lightning current waveform of the on-line monitoring device is developed[J].High Voltage Technology,2013,39(11):2 699-2 705.
[14]Patyk T,Guevorkian D,Pitkanen T,et al.Low-power application-specific FFT processor for LTE applications[C].In Embedded Computer Systems:International Conference on Architectures,Modeling and Simulation(SAMOS XIII),Prague,2013.
[15]Leigsnering M,Zoubir A M.Fast wideband near-field imaging using the non-equispaced FFT with application to through-wall radar[C].19th European Signal Processing Conference,Barcelona,Spain,2011.