采用等安匝原理的自校式CT误差测量方法
|
摘要
为解决特高压交流输电气体绝缘封闭式开关设备(Gas-Insulated metal-enclosed Switchgear,GIS)中的电流互感器(Current Transformer,CT)现场误差测量试验难以开展的问题,提出了采用等安匝原理的自校式CT误差测量方法。通过在CT铁心上设置同样结构的双二次绕组,以实现CT误差的自校。正常运行时双二次绕组并联连接;进行误差测量时,双二次绕组分开,通过向其中一个绕组(等效一次绕组)输入电流,构造出等效于正常运行状态下的磁势,通过自校法测差电路可实现对另一绕组(等效二次绕组)的误差测量。与传统比较法相比,可有效降低现场工作环境下对大型试验设备和电源的要求,减少试验和运维工作量。对工程用自校CT线圈的仿真及试验,验证了所提方法的有效性。
In order to solve the problems occurred in field error measurement of current transformer in UHV AC transmission Gas-insulated Metal-enclosed Switchgear(GIS), an error measurement method of self calibration CT realized by equal ampere-turns is proposed. Double secondary windings with the same structure are arranged in the CT's core to realize error self calibration of CT. In normal working condition, the double secondary windings are connected in parallel; in the error test, the double secondary windings are separated, through inputting current to one of the secondary winding(equivalent to primary winding), the magnetic potential under the equivalent normal working condition is constructed, and the measurement of CT's error can be realized by measuring the other winding's current(equivalent to the secondary winding) under the self calibration circuit. Compared with the traditional comparison method, it can effectively reduce the requirements of large-scale test equipment and power supply in field work, and reduce the workload of test and operation and maintenance. The simulation and experiment of the self calibration CT used in the engineering demonstrate the effectiveness of the method.
In order to solve the problems occurred in field error measurement of current transformer in UHV AC transmission Gas-insulated Metal-enclosed Switchgear(GIS), an error measurement method of self calibration CT realized by equal ampere-turns is proposed. Double secondary windings with the same structure are arranged in the CT's core to realize error self calibration of CT. In normal working condition, the double secondary windings are connected in parallel; in the error test, the double secondary windings are separated, through inputting current to one of the secondary winding(equivalent to primary winding), the magnetic potential under the equivalent normal working condition is constructed, and the measurement of CT's error can be realized by measuring the other winding's current(equivalent to the secondary winding) under the self calibration circuit. Compared with the traditional comparison method, it can effectively reduce the requirements of large-scale test equipment and power supply in field work, and reduce the workload of test and operation and maintenance. The simulation and experiment of the self calibration CT used in the engineering demonstrate the effectiveness of the method.
引文
[1]耿庆申,卢玉,樊海荣,等.特高压和超高压交流输电系统运行损耗比较分析[J].电力系统保护与控制,2016,44(16):72-77.GENG Qingshen,LU Yu,FAN Hairong,et al.Comparative analysis of operation losses of UHV AC and EHV AC transmission systems[J].Power System Protection and Control,2016,44(16):72-77.
[2]BO Zhiqian,LIN Xiangning,WANG Qingping,et al.Developments of power system protection and control[J].Protection and Control of Modern Power Systems,2016,1(1):1-8.DOI:10.1186/s41601-016-0012-2.
[3]戴魏,郑玉平,白亮亮,等.保护用电流互感器传变特性分析[J].电力系统保护与控制,2017,45(19):46-54.DAI Wei,ZHENG Yuping,BAI Liangliang,et al.Analysis of protective current transformer transient response[J].Power System Protection and Control,2017,45(19):46-54.
[4]张侃君,戚宣威,胡伟,等.YD型换流变三角形绕组CT饱和对直流保护的影响及对策[J].电力系统保护与控制,2016,44(20):99-105.ZHANG Kanjun,QI Xuanwei,HU Wei,et al.Impact of the CT saturation of the delta winding on the HVDC protection and its countermeasure[J].Power System Protection and Control,2016,44(20):99-105.
[5]尹项根,张哲,王友怀,等.变压器间及其与电流互感器暂态交互作用分析和保护对策[J].电力系统保护与控制,2016,44(23):1-9.YIN Xianggen,ZHANG Zhe,WANG Youhuai,et al.Multiple transformers and CTs interactive effect and its impact on the protective relay[J].Power System Protection and Control,2016,44(23):1-9.
[6]于会群,李增峰,吉军,等.电厂高压设备无线移动测温系统开发[J].热力发电,2017,46(11):61-66.YU Huiqun,LI Zengfeng,JI Jun,et al.Development of wireless mobile temperature monitoring system for high voltage equipments in power plants[J].Thermal Power Generation,2017,46(11):61-66.
[7]中国电力企业联合会.电气装置安装工程电气设备交接试验标准:GB 50150—2016[S].北京:中国计划出版社,2006.China Electricity Council.Erection works of electrical installations-standard for hand-over test of electric equipment:GB 50150—2016[S].Beijing:China Planning Press,2006.
[8]国家高电压计量站,浙江省质量技术监督检测研究院.电力互感器检定规程:JJG1021—2007[S].北京:中国计量出版社,2007.National High Voltage Metering Station,Zhejiang Institute of Quality and Technical Supervision and Testing.Verification regulation of instrument transformer in power system:JJG1021—2007[S].Beijing:China Metrology Publishing House,2007.
[9]吴良科,刘浩,岳长喜,等.大电流互感器现场检定试验中的无功补偿[J].高电压技术,2010,36(6):1560-1565.WU Liangke,LIU Hao,YUE Changxi,et al.Reactive power compensation of on-site calibration test for current transformers[J].High Voltage Engineering,2010,36(6):1560-1565.
[10]章述汉,朱跃,吴良科,等.750 k V GIS电流互感器现场检定试验方法[J].高电压技术,2009,35(5):1200-1205.ZHANG Shuhan,ZHU Yue,WU Liangke,et al.Method of on-site calibration test for 750 k V GIS current transformers[J].High Voltage Engineering,2009,35(5):1200-1205.
[11]徐敏锐,黄奇峰,卢树峰,等.1000 k V特高压GIS电流互感器现场误差智能化检定系统设计与应用[J].电测与仪表,2015,52(22):68-72.XU Minrui,HUANG Qifeng,LU Shufeng,et al.Design and application of intelligent on-site error verification system for 1000 k V UHV current transformer in GIS[J].Electrical Measurement&Instrumentation,2015,52(22):68-72.
[12]吕志强,田勇,路夏甲,等.现场电流互感器误差测试间接检定法的研究[J].工业仪表与自动化装置,2014(6):79-81,103.LüZhiqiang,TIAN Yong,LU Xiajia,et al.The research of the indirect calibration methods on the site current transformers error test[J].Industrial Instrumentation&Automation,2014(6):79-81,103.
[13]张皓,赵伟,屈凯峰,等.非均绕等安匝法试验下电流互感器铁心磁场的研究[J].电工电能新技术,2008,27(1):47-50,54.ZHANG Hao,ZHAO Wei,QU Kaifeng,et al.Research on magnetic field of current transformer under non uniformly-distributed equal ampere-turns test[J].Advanced Technology of Electrical Engineering and Energy,2008,27(1):47-50,54.
[14]郑汉军,吴良科,雷民,等.并联式等安匝法在GTA现场误差校验中应用[J].电测与仪表,2010,47(12):31-35,40.ZHENG Hanjun,WU Liangke,LEI Min,et al Application of parallel and equal ampere turns method on field error calibration GTA[J].Electrical Measurement&Instrumentation,2010,47(12):31-35,40.
[15]汪溢,黄曙,马凯.继电保护在线校核技术研究[J].热力发电,2016,45(8):87-93.WANG Yi,HUANG Shu,MA Kai.Relay protection online verifying technology[J].Thermal Power Generation,2016,45(8):87-93.
[16]孙冲,耿建坡,崔海利,等.电流互感器误差测试大电流回路特性及改善方法研究[J].电测与仪表,2012,49(9):58-62.SUN Chong,GENG Jianpo,CUI Haili,et al.Research of current loop impedance and improving method of on-site calibration for current transformers[J].Electrical Measurement&Instrumentation,2012,49(9):58-62.
[17]冯宇,王晓琪,汪本进,等.采用等安匝合成电源的电流互感器谐波特性测量方法[J].中国电机工程学报,2015,35(12):3154-3160.FENG Yu,WANG Xiaoqi,WANG Benjin,et al.A measurement method of current transformers’harmonic characteristics by using equal ampere-turns synthetic power[J].Proceedings of the CSEE,2015,35(12):3154-3160.
[18]中国电力科学研究院,国网山西省电力公司.一种电力系统用CT计量绕组的自校线圈:中国,201520554853.X[P].2015-07-28.
[19]凌子恕.高压互感器技术手册[M].北京:中国电力出版社,2005:46-51.
[2]BO Zhiqian,LIN Xiangning,WANG Qingping,et al.Developments of power system protection and control[J].Protection and Control of Modern Power Systems,2016,1(1):1-8.DOI:10.1186/s41601-016-0012-2.
[3]戴魏,郑玉平,白亮亮,等.保护用电流互感器传变特性分析[J].电力系统保护与控制,2017,45(19):46-54.DAI Wei,ZHENG Yuping,BAI Liangliang,et al.Analysis of protective current transformer transient response[J].Power System Protection and Control,2017,45(19):46-54.
[4]张侃君,戚宣威,胡伟,等.YD型换流变三角形绕组CT饱和对直流保护的影响及对策[J].电力系统保护与控制,2016,44(20):99-105.ZHANG Kanjun,QI Xuanwei,HU Wei,et al.Impact of the CT saturation of the delta winding on the HVDC protection and its countermeasure[J].Power System Protection and Control,2016,44(20):99-105.
[5]尹项根,张哲,王友怀,等.变压器间及其与电流互感器暂态交互作用分析和保护对策[J].电力系统保护与控制,2016,44(23):1-9.YIN Xianggen,ZHANG Zhe,WANG Youhuai,et al.Multiple transformers and CTs interactive effect and its impact on the protective relay[J].Power System Protection and Control,2016,44(23):1-9.
[6]于会群,李增峰,吉军,等.电厂高压设备无线移动测温系统开发[J].热力发电,2017,46(11):61-66.YU Huiqun,LI Zengfeng,JI Jun,et al.Development of wireless mobile temperature monitoring system for high voltage equipments in power plants[J].Thermal Power Generation,2017,46(11):61-66.
[7]中国电力企业联合会.电气装置安装工程电气设备交接试验标准:GB 50150—2016[S].北京:中国计划出版社,2006.China Electricity Council.Erection works of electrical installations-standard for hand-over test of electric equipment:GB 50150—2016[S].Beijing:China Planning Press,2006.
[8]国家高电压计量站,浙江省质量技术监督检测研究院.电力互感器检定规程:JJG1021—2007[S].北京:中国计量出版社,2007.National High Voltage Metering Station,Zhejiang Institute of Quality and Technical Supervision and Testing.Verification regulation of instrument transformer in power system:JJG1021—2007[S].Beijing:China Metrology Publishing House,2007.
[9]吴良科,刘浩,岳长喜,等.大电流互感器现场检定试验中的无功补偿[J].高电压技术,2010,36(6):1560-1565.WU Liangke,LIU Hao,YUE Changxi,et al.Reactive power compensation of on-site calibration test for current transformers[J].High Voltage Engineering,2010,36(6):1560-1565.
[10]章述汉,朱跃,吴良科,等.750 k V GIS电流互感器现场检定试验方法[J].高电压技术,2009,35(5):1200-1205.ZHANG Shuhan,ZHU Yue,WU Liangke,et al.Method of on-site calibration test for 750 k V GIS current transformers[J].High Voltage Engineering,2009,35(5):1200-1205.
[11]徐敏锐,黄奇峰,卢树峰,等.1000 k V特高压GIS电流互感器现场误差智能化检定系统设计与应用[J].电测与仪表,2015,52(22):68-72.XU Minrui,HUANG Qifeng,LU Shufeng,et al.Design and application of intelligent on-site error verification system for 1000 k V UHV current transformer in GIS[J].Electrical Measurement&Instrumentation,2015,52(22):68-72.
[12]吕志强,田勇,路夏甲,等.现场电流互感器误差测试间接检定法的研究[J].工业仪表与自动化装置,2014(6):79-81,103.LüZhiqiang,TIAN Yong,LU Xiajia,et al.The research of the indirect calibration methods on the site current transformers error test[J].Industrial Instrumentation&Automation,2014(6):79-81,103.
[13]张皓,赵伟,屈凯峰,等.非均绕等安匝法试验下电流互感器铁心磁场的研究[J].电工电能新技术,2008,27(1):47-50,54.ZHANG Hao,ZHAO Wei,QU Kaifeng,et al.Research on magnetic field of current transformer under non uniformly-distributed equal ampere-turns test[J].Advanced Technology of Electrical Engineering and Energy,2008,27(1):47-50,54.
[14]郑汉军,吴良科,雷民,等.并联式等安匝法在GTA现场误差校验中应用[J].电测与仪表,2010,47(12):31-35,40.ZHENG Hanjun,WU Liangke,LEI Min,et al Application of parallel and equal ampere turns method on field error calibration GTA[J].Electrical Measurement&Instrumentation,2010,47(12):31-35,40.
[15]汪溢,黄曙,马凯.继电保护在线校核技术研究[J].热力发电,2016,45(8):87-93.WANG Yi,HUANG Shu,MA Kai.Relay protection online verifying technology[J].Thermal Power Generation,2016,45(8):87-93.
[16]孙冲,耿建坡,崔海利,等.电流互感器误差测试大电流回路特性及改善方法研究[J].电测与仪表,2012,49(9):58-62.SUN Chong,GENG Jianpo,CUI Haili,et al.Research of current loop impedance and improving method of on-site calibration for current transformers[J].Electrical Measurement&Instrumentation,2012,49(9):58-62.
[17]冯宇,王晓琪,汪本进,等.采用等安匝合成电源的电流互感器谐波特性测量方法[J].中国电机工程学报,2015,35(12):3154-3160.FENG Yu,WANG Xiaoqi,WANG Benjin,et al.A measurement method of current transformers’harmonic characteristics by using equal ampere-turns synthetic power[J].Proceedings of the CSEE,2015,35(12):3154-3160.
[18]中国电力科学研究院,国网山西省电力公司.一种电力系统用CT计量绕组的自校线圈:中国,201520554853.X[P].2015-07-28.
[19]凌子恕.高压互感器技术手册[M].北京:中国电力出版社,2005:46-51.