罗氏线圈电流互感器电屏蔽结构缺陷误差机理研究
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摘要
文中针对牡丹江110 kV桦林变10 kV数字化计量试点中发现的电子式电流互感器运行状态下误差异常故障,开展罗氏线圈原理电子式电流互感器电屏蔽结构缺陷产生的误差机理研究;通过理论分析建立电子式互感器的屏蔽结构在电场中所形成的耦合电容网络,提出附加误差电压计算公式,并利用有限元仿真软件计算无屏蔽、屏蔽破损、屏蔽接地失效等状态下外部电磁场对电子式电流互感器比值误差的影响量;通过实验室搭建测试平台复现并消除现场故障。相关研究工作对完善电子式电流互感器现场检测方法、及时发现故障隐患和故障原因提供实践依据。
The electronic current transformers(ECTs)based on Rogowski coil principle are used in the 10 kV digital measurement pilot line in 110 kV Hualin Substation in Mudanjiang.During the long-term operation of the equipment,some faults unexpected of the ECTs are found out.Thus the error mechanism of the ECTs' electrical shielding structure defects is developed in this paper.The coupling capacitor structure of the transformer is formed in the electric field,and an additional error voltage calculation formula is proposed.The finite element simulation is used to calculate the external electromagnetic field to the ECT under the conditions of no shielding,shielding damage and shielding without ground.The field failures can be reproduced and eliminated through the laboratory test platform.These research works provide a practical basis for improving the on-site detection method of ECTs and finding hidden troubles in time.
The electronic current transformers(ECTs)based on Rogowski coil principle are used in the 10 kV digital measurement pilot line in 110 kV Hualin Substation in Mudanjiang.During the long-term operation of the equipment,some faults unexpected of the ECTs are found out.Thus the error mechanism of the ECTs' electrical shielding structure defects is developed in this paper.The coupling capacitor structure of the transformer is formed in the electric field,and an additional error voltage calculation formula is proposed.The finite element simulation is used to calculate the external electromagnetic field to the ECT under the conditions of no shielding,shielding damage and shielding without ground.The field failures can be reproduced and eliminated through the laboratory test platform.These research works provide a practical basis for improving the on-site detection method of ECTs and finding hidden troubles in time.
引文
[1]刘志恒,段雄英,廖敏夫,等.罗氏线圈电子式电流互感器积分特性研究[J].电力自动化设备,2017(3):191-196.LIU Zhiheng,DUAN Xiongying,LIAO Minfu,et al.Study on integral characteristics of Rogowski coil electronic current transformer[J].Electric Power Automation Equipment,2017(3):191-196.
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[9]池立江,刘伟,冉允喜.一次导体偏心对罗氏线圈的干扰研究[J].高压电器,2014,50(1):67-71.CHI Lijiang,LIU Wei,RAN Yunxi.Study on the interference of a conductor eccentricity to rogowski coils[J].High Voltage Apparatus,2014,50(1):67-71.
[10]申狄秋,朱明东,王旭峰,等.罗氏线圈电流互感器谐波计量特性研究[J].高压电器,2018,54(6):170-176.SHEN Diqiu,ZHU Mingdong,WANG Xufeng,et al.Study on harmonic measurement characteristics of Rogowski coil current transformer[J].High Voltage Apparatus,2018,54(6):170-176.
[11]张建功,赵军,谢鹏康,等.VFTO作用下电子式电流互感器二次端口电磁特性仿真分析[J].电工技术学报,2015,30(z2):88-94.ZHANG Jiangong,ZHAO Jun,XIE Pengkang,et al.Simulation and analysis of electromagnetic properties at the secondary port of electronic current transformers under very fast transient overvoltage[J].Transactions of China Electrotechnical Society,2015,30(z2):88-94.
[12]CHEN H,LIU H,JIANG H,et al.A scheme for detection and assessment of current transformer saturation[C]//International Conference on Measuring Technology and Mechatronics Automation.[S.l.]:IEEE,2017:90-93.
[13]LIU Z,DUAN X,LIAO M,et al.Simulation and test of electromagnetic interference with electronic current transformer[J].HighVoltageEngineering,2017,43(3):994-999.
[14]CHENG Lin,GUO Anxiang,QI Weidong,et al.Study on output characteristics of electronic current transformer in complex electromagnetic environment[J].Smart Power,2017,45(8):64-69.
[15]VOLOVICH G I,KIRPICHNIKOVA I M,TOPOLSKIY DV.Experimental operation of the adaptive electronic instrument transformer of current and voltage[C]//International Conference on Industrial Engineering,Applications and Manufacturing.[S.l.]:[s.n.],2017:1-5.
[16]陈庆,李红斌,张明明,等.采用主副印制电路板构造的Rogowski线圈性能分析及设计[J].电力系统自动化,2004,28(16)79-82.CHEN Qing,LI Hongbin,ZHANG Mingming,et al.Analysis and design of Rogowski coils with main and assistant printed circuit boards[J].Automation of Electric Power Systems,2004,28(16):79-82.
[17]汪建,戴原骁.Rogowski线圈数字积分器的直流误差消除方法研究[J].电测与仪表,2016(24):80-86.WANG Jian,DAI Yuanxiao.A DC error elimination method for Rogowski coil digital integrator[J].Electrical Measurement&Instrumentation,2016(24):80-86.
[18]HAJIPOUR E,VAKILIAN M,SANAYE-PASAND M.Current-transformer saturation prevention using a controlled voltage-source compensator[J].IEEE Transactions on Power Delivery,2017,32(2):1039-1048.
[19]CATALIOTTI A,COSENTINO V,DI CARA D A,et al.Rogowski coil current transducer compensation method for harmonic active power error[J].Measurement,2015(63):240-251.
[20]GUO X H,LIAO J S,ZHU M J,et al.Improved performance Rogowski coils for power system[C]//2003 IEEEPES Transmission and distribution conference and exposition.[S.l.]:IEEE,2003:371-374.
[21]WANG H M,ZHANG H L,ZHENG S X.Optimization design of configuration for single-layer rigid Rogowski coils[C]//13th International Symposium Power Electronics Ee2005Novi Sad.Serbia and Montenegro:[s.n.],2005:2-4.
[22]互感器第8部分:电子式电流互感器:GB/T 20840.8-2007[S].2007.Transformers-Part 8:Electronic current transformers:GB/T20840.8-2007[S].2007.
[2]白世军,曾林翠,荣命哲,等.GIS隔离开关操作对电子式电流互感器的干扰分析及防护[J].高压电器,2016,52(4):54-62.BAI Shijun,ZENG Lincui,RONG Mingzhe,et al.Interference analysis and protection of GIS isolation switch operation on electronic current transformer[J].High Voltage Apparatus,2016,52(4):54-62.
[3]李振华,于洁,李振兴,等.电子式互感器电磁兼容性能研究现状分析[J].高压电器,2017,53(4):220-226.LI Zhenhua,YU Jie,LI Zhenxing,et al.Analysis of electromagnetic compatibility performance of electronic transformer[J].High Voltage Apparatus,2017,53(4):220-226.
[4]辛伟峰,王栋,寇晓适,等.暂态电磁干扰通过电子式互感器的传导耦合效应研究[J].高压电器,2017,53(4):164-170.XIN Weifeng,WANG Dong,KOU Xiaoshi,et al.Study on the conduction coupling effect of transient electromagnetic interference through electronic transformers[J].High Voltage Apparatus,2017,53(4):164-170.
[5]PAN Feng,CHEN Ruimin,XIAO Yong,et al.Electronic voltage and current transformers testing device[J].Sensors,2012,12(1):1042-1051.
[6]刘彬,叶国雄,郭克勤,等.电子式互感器性能检测及问题分析[J].高电压技术,2012,38(11):2972-2980.LIU Bin,YE Guoxiong,GUO Keqin,et al.Quality test and problem analysis of electronic transformer[J].High Voltage Engineering,2012,38(11):2972-2980.
[7]童悦,张勤,叶国雄,等.电子式互感器电磁兼容性能分析[J].高电压技术,2013,39(11):2829-2835.TONG Yue,ZHANG Qin,YE Guoxiong,et al.Electromagnetic compatibility performance of electronic transformers[J].High Voltage Engineering,2013,39(11):2829-2835.
[8]MARINESCU A,COATU S,RUCINSCHI D.About the EMC of non-conventional electronic instrument transformer.case study[C]//International Conference on Applied and Theoretical Electricity.[S.l.]:IEEE,2012:1-5.
[9]池立江,刘伟,冉允喜.一次导体偏心对罗氏线圈的干扰研究[J].高压电器,2014,50(1):67-71.CHI Lijiang,LIU Wei,RAN Yunxi.Study on the interference of a conductor eccentricity to rogowski coils[J].High Voltage Apparatus,2014,50(1):67-71.
[10]申狄秋,朱明东,王旭峰,等.罗氏线圈电流互感器谐波计量特性研究[J].高压电器,2018,54(6):170-176.SHEN Diqiu,ZHU Mingdong,WANG Xufeng,et al.Study on harmonic measurement characteristics of Rogowski coil current transformer[J].High Voltage Apparatus,2018,54(6):170-176.
[11]张建功,赵军,谢鹏康,等.VFTO作用下电子式电流互感器二次端口电磁特性仿真分析[J].电工技术学报,2015,30(z2):88-94.ZHANG Jiangong,ZHAO Jun,XIE Pengkang,et al.Simulation and analysis of electromagnetic properties at the secondary port of electronic current transformers under very fast transient overvoltage[J].Transactions of China Electrotechnical Society,2015,30(z2):88-94.
[12]CHEN H,LIU H,JIANG H,et al.A scheme for detection and assessment of current transformer saturation[C]//International Conference on Measuring Technology and Mechatronics Automation.[S.l.]:IEEE,2017:90-93.
[13]LIU Z,DUAN X,LIAO M,et al.Simulation and test of electromagnetic interference with electronic current transformer[J].HighVoltageEngineering,2017,43(3):994-999.
[14]CHENG Lin,GUO Anxiang,QI Weidong,et al.Study on output characteristics of electronic current transformer in complex electromagnetic environment[J].Smart Power,2017,45(8):64-69.
[15]VOLOVICH G I,KIRPICHNIKOVA I M,TOPOLSKIY DV.Experimental operation of the adaptive electronic instrument transformer of current and voltage[C]//International Conference on Industrial Engineering,Applications and Manufacturing.[S.l.]:[s.n.],2017:1-5.
[16]陈庆,李红斌,张明明,等.采用主副印制电路板构造的Rogowski线圈性能分析及设计[J].电力系统自动化,2004,28(16)79-82.CHEN Qing,LI Hongbin,ZHANG Mingming,et al.Analysis and design of Rogowski coils with main and assistant printed circuit boards[J].Automation of Electric Power Systems,2004,28(16):79-82.
[17]汪建,戴原骁.Rogowski线圈数字积分器的直流误差消除方法研究[J].电测与仪表,2016(24):80-86.WANG Jian,DAI Yuanxiao.A DC error elimination method for Rogowski coil digital integrator[J].Electrical Measurement&Instrumentation,2016(24):80-86.
[18]HAJIPOUR E,VAKILIAN M,SANAYE-PASAND M.Current-transformer saturation prevention using a controlled voltage-source compensator[J].IEEE Transactions on Power Delivery,2017,32(2):1039-1048.
[19]CATALIOTTI A,COSENTINO V,DI CARA D A,et al.Rogowski coil current transducer compensation method for harmonic active power error[J].Measurement,2015(63):240-251.
[20]GUO X H,LIAO J S,ZHU M J,et al.Improved performance Rogowski coils for power system[C]//2003 IEEEPES Transmission and distribution conference and exposition.[S.l.]:IEEE,2003:371-374.
[21]WANG H M,ZHANG H L,ZHENG S X.Optimization design of configuration for single-layer rigid Rogowski coils[C]//13th International Symposium Power Electronics Ee2005Novi Sad.Serbia and Montenegro:[s.n.],2005:2-4.
[22]互感器第8部分:电子式电流互感器:GB/T 20840.8-2007[S].2007.Transformers-Part 8:Electronic current transformers:GB/T20840.8-2007[S].2007.