高电压大容量干式空心电抗器匝间短路故障在线监测方法
|
摘要
高电压、大容量干式空心电抗器是大规模电力系统中的重要电力设备之一,匝间短路故障是其主要的失效破坏形式,对其进行在线监控和预警对于保障电力系统可靠运行具有重要意义。采用设置于电抗器端部的等电位自差分结构探测线圈感应电压反映电抗器的磁场变化,采用数字信号处理器(DSP)高速采样和ZigBee无线信号传输,实现运行电抗器的高电压隔离。基于匝间短路故障发生时会伴随电抗器磁场突变的特征,提出了采样数据中心移动均值算法实时拟合电抗器的工作波形,把采样数据和工作波形的离差作为随机过程,采用置信区间t检验模型实时识别匝间短路故障信号。试验结果表明:新提出的在线检测方法能够在5%～100%电抗器负荷变化等条件下准确、可靠地识别匝间短路故障信号并提供及时预警,适合用于高电压、大容量类电抗器产品的匝间短路故障的实时监控。
Dry-type air-core reactor with high voltage and large capacity is one of the important electrical devices in large scale power system. Inter-turn short circuit fault is the main damage form of the reactor. Both online monitoring of reactor and early warning of inter-turn short circuit fault are of great significance for the power system reliability. The inductive voltages of equipotential self-difference coils installed at the two ends of the reactor are used to monitor the variation of the magnetic field of the reactor. Both high-speed sampling of digital signal processor(DSP) with self-power supply and ZigBee wireless communication are adopted to insulate high voltage. The magnetic field of the reactor will suddenly change when inter-turn short circuit occurs, therefore, a new algorithm for the mean value of moving center of sampled data is proposed to fit the working waveform of the running reactor, in which the deviation between the sampled data and the working waveform is regarded as a stochastic process, and the t-test model for confidence interval is used to recognize the inter-turn short circuit fault signals. The test results show that the proposed methods are accurate and reliable to detect the early inter-turn short circuit fault in the range of 5%～100% load variation, and they can be suitable for online monitoring of dry-type air core reactor with high voltage and large capacity.
Dry-type air-core reactor with high voltage and large capacity is one of the important electrical devices in large scale power system. Inter-turn short circuit fault is the main damage form of the reactor. Both online monitoring of reactor and early warning of inter-turn short circuit fault are of great significance for the power system reliability. The inductive voltages of equipotential self-difference coils installed at the two ends of the reactor are used to monitor the variation of the magnetic field of the reactor. Both high-speed sampling of digital signal processor(DSP) with self-power supply and ZigBee wireless communication are adopted to insulate high voltage. The magnetic field of the reactor will suddenly change when inter-turn short circuit occurs, therefore, a new algorithm for the mean value of moving center of sampled data is proposed to fit the working waveform of the running reactor, in which the deviation between the sampled data and the working waveform is regarded as a stochastic process, and the t-test model for confidence interval is used to recognize the inter-turn short circuit fault signals. The test results show that the proposed methods are accurate and reliable to detect the early inter-turn short circuit fault in the range of 5%～100% load variation, and they can be suitable for online monitoring of dry-type air core reactor with high voltage and large capacity.
引文
[1]ZHAO Y Z,CHEN F,KANG B,et al.Optimum design of dry-type air-core reactor based on the additional constraints balance and hybrid genetic algorithm[J].International Journal of Applied Electromagnetics and Mechanics,2010,33(1/2):279-284.
[2]马超,赵彦珍,马西奎.基于等电流相位法的单相干式空心电抗器设计[J].电工技术学报,2017,32(10):190-195.MA Chao,ZHAO Yanzhen,MA Xikui.Design method based on layer current phase equality in single-phase dry-type air-core reactor[J].Transactions of China Electrotechnical Society,2017,32(10):190-195.
[3]陈嵘,杨松伟,程泳,等.干式空心并联电抗器电磁-流体-温度场耦合计算与分析[J].高电压技术,2017,43(9):3021-3028.CHEN Rong,YANG Songwei,CHENG Yong,et al.Electromagnetic-fluid-temperature coupling calculation and analysis of dry-type air-core shunt reactor[J].High Voltage Engineering,2017,43(9):3021-3028.
[4]王梓,刘溟,邹建明,等.基于TVOC检测的干式空心电抗器过热故障诊断方法[J].高电压技术,2017,43(11):3756-3762.WANG Zi,LIU Ming,ZOU Jianming,et al.Diagnostic method of dry-type air-core reactors overheating fault based on monitoring TVOC[J].High Voltage Engineering,2017,43(11):3756-3762.
[5]王建,张广洲,赵晓震,等.基于脉冲耦合注入的高压并联电抗器绕组故障带电检测[J].高电压技术,2017,43(3):872-878.WANG Jian,ZHANG Guangzhou,ZHAO Xiaozhen,et al.Online detection investigation of the high voltage shunt reactor winding deformation based on coupling injection of pulses[J].High Voltage Engineering,2017,43(3):872-878.
[6]张晗,蔡延雷.一起500 kV变电站干式空心电抗器故障原因分析[J].电力电容器与无功补偿,2016,37(1):47-50.ZHANG Han,CAI Yanlei.Fault analysis on dry-type reactor in 500kV substation[J].Power Capacitor and Reactive Power Compensation,2016,37(1)):47-50.
[7]楚金伟,陈伟民,张良,等.干式空心电抗器烧毁故障分析[J].广东电力,2016,29(7):117-121.CHU Jinwei,CHEN Weimin,ZHANG Liang,et al.Analysis on burning fault of dry air-core reactor[J].Guangdong Electric Power,2016,29(7):117-121.
[8]王贵山,李应宏,杨盛杰,等.干式空心电抗器故障及运维策略分析[J].电力电容器与无功补偿,2015,36(6):82-85.WANG Guishan,LI Yinghong,YANG Shengjie,et al.Failure analysis and preventive measures to dry-type air-core reactor[J].Power Capacitor and Reactive Power Compensation,2015,36(6):82-85.
[9]高晓东,曲文韬,陈仁刚.35 kV干式空心电抗器故障分析及预防措施[J].电力电容器与无功补偿,2015,36(2):85-88.GAO Xiaodong,QU Wentao,CHEN Rengang.Fault analysis and preventive measures on 35 kV air-core dry-type reactor[J].Power Capacitor and Reactive Power Compensation,2015,36(2):85-88.
[10]王华玺,葛少杰,董万光,等.一起35 kV干式空心电抗器故障分析[J].电力电容器与无功补偿,2014,35(5):92-95.WANG Huaxi,GE Shaojie,DONG Wanguang,et al.Fault analysis of35 kV dry-type air core reactor[J].Power Capacitor and Reactive Power Compensation,2014,35(5):92-95.
[11]ZHAO Y Z,MA X K,YANG J C.Online detection of inter-turn short circuit faults in dry-type air-core reactor[J].International Journal of Electromagnetics and Mechanics,2012,39(1):443-449.
[12]杨继超.干式空心电抗器匝间短路故障在线监测系统的设计[M].西安:西安交通大学,2012.YANG Jichao.Design of online system for detecting inter-turn short circuit in dry-type air-core reactor[M].Xi’an,China:Xi’an Jiaotong University,2012.
[13]周延辉,赵振刚,李英娜,等.埋入35 kV干式空心电抗器的光纤布拉格光栅测温研究[J].电工技术学报,2015,30(5):142-146.ZHOU Yanhui,ZHAO Zhengang,LI Yingna,et al.The study on the temperature measurement for the 35 kV dry-type air-core reactor with the embedded optical fiber bragg grating[J].Transactions of China Electrotechnical Society,2015,30(5):142-146.
[14]林瑞聪,缪希仁,郭谋发,等.电抗器潜伏性故障特征及其耦合量分析综述[J].高压电器,2015,51(1):150-155.LIN Ruicong,MIAO Xiren,GUO Moufa,et al.Analysis and review on reactor latent fault characteristics and its coupling parameter[J].High Voltage Apparatus,2015,51(1):150-155.
[2]马超,赵彦珍,马西奎.基于等电流相位法的单相干式空心电抗器设计[J].电工技术学报,2017,32(10):190-195.MA Chao,ZHAO Yanzhen,MA Xikui.Design method based on layer current phase equality in single-phase dry-type air-core reactor[J].Transactions of China Electrotechnical Society,2017,32(10):190-195.
[3]陈嵘,杨松伟,程泳,等.干式空心并联电抗器电磁-流体-温度场耦合计算与分析[J].高电压技术,2017,43(9):3021-3028.CHEN Rong,YANG Songwei,CHENG Yong,et al.Electromagnetic-fluid-temperature coupling calculation and analysis of dry-type air-core shunt reactor[J].High Voltage Engineering,2017,43(9):3021-3028.
[4]王梓,刘溟,邹建明,等.基于TVOC检测的干式空心电抗器过热故障诊断方法[J].高电压技术,2017,43(11):3756-3762.WANG Zi,LIU Ming,ZOU Jianming,et al.Diagnostic method of dry-type air-core reactors overheating fault based on monitoring TVOC[J].High Voltage Engineering,2017,43(11):3756-3762.
[5]王建,张广洲,赵晓震,等.基于脉冲耦合注入的高压并联电抗器绕组故障带电检测[J].高电压技术,2017,43(3):872-878.WANG Jian,ZHANG Guangzhou,ZHAO Xiaozhen,et al.Online detection investigation of the high voltage shunt reactor winding deformation based on coupling injection of pulses[J].High Voltage Engineering,2017,43(3):872-878.
[6]张晗,蔡延雷.一起500 kV变电站干式空心电抗器故障原因分析[J].电力电容器与无功补偿,2016,37(1):47-50.ZHANG Han,CAI Yanlei.Fault analysis on dry-type reactor in 500kV substation[J].Power Capacitor and Reactive Power Compensation,2016,37(1)):47-50.
[7]楚金伟,陈伟民,张良,等.干式空心电抗器烧毁故障分析[J].广东电力,2016,29(7):117-121.CHU Jinwei,CHEN Weimin,ZHANG Liang,et al.Analysis on burning fault of dry air-core reactor[J].Guangdong Electric Power,2016,29(7):117-121.
[8]王贵山,李应宏,杨盛杰,等.干式空心电抗器故障及运维策略分析[J].电力电容器与无功补偿,2015,36(6):82-85.WANG Guishan,LI Yinghong,YANG Shengjie,et al.Failure analysis and preventive measures to dry-type air-core reactor[J].Power Capacitor and Reactive Power Compensation,2015,36(6):82-85.
[9]高晓东,曲文韬,陈仁刚.35 kV干式空心电抗器故障分析及预防措施[J].电力电容器与无功补偿,2015,36(2):85-88.GAO Xiaodong,QU Wentao,CHEN Rengang.Fault analysis and preventive measures on 35 kV air-core dry-type reactor[J].Power Capacitor and Reactive Power Compensation,2015,36(2):85-88.
[10]王华玺,葛少杰,董万光,等.一起35 kV干式空心电抗器故障分析[J].电力电容器与无功补偿,2014,35(5):92-95.WANG Huaxi,GE Shaojie,DONG Wanguang,et al.Fault analysis of35 kV dry-type air core reactor[J].Power Capacitor and Reactive Power Compensation,2014,35(5):92-95.
[11]ZHAO Y Z,MA X K,YANG J C.Online detection of inter-turn short circuit faults in dry-type air-core reactor[J].International Journal of Electromagnetics and Mechanics,2012,39(1):443-449.
[12]杨继超.干式空心电抗器匝间短路故障在线监测系统的设计[M].西安:西安交通大学,2012.YANG Jichao.Design of online system for detecting inter-turn short circuit in dry-type air-core reactor[M].Xi’an,China:Xi’an Jiaotong University,2012.
[13]周延辉,赵振刚,李英娜,等.埋入35 kV干式空心电抗器的光纤布拉格光栅测温研究[J].电工技术学报,2015,30(5):142-146.ZHOU Yanhui,ZHAO Zhengang,LI Yingna,et al.The study on the temperature measurement for the 35 kV dry-type air-core reactor with the embedded optical fiber bragg grating[J].Transactions of China Electrotechnical Society,2015,30(5):142-146.
[14]林瑞聪,缪希仁,郭谋发,等.电抗器潜伏性故障特征及其耦合量分析综述[J].高压电器,2015,51(1):150-155.LIN Ruicong,MIAO Xiren,GUO Moufa,et al.Analysis and review on reactor latent fault characteristics and its coupling parameter[J].High Voltage Apparatus,2015,51(1):150-155.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |