换流变压器第1次空载合闸励磁涌流抑制的研究
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摘要
为了有效地抑制换流变压器(以下简称"换流变")第1次合闸产生的励磁涌流,减少高幅值励磁涌流对交流系统的冲击以及对一次设备的伤害,研制了一种断路器动作时间精确量测装置,该装置可对断路器合闸控制装置进行预控。为此,首先分析了换流变第1次空充励磁涌流的机理及断路器的动作特性,在此基础上设计并开发了高压断路器的闭环动作时间测试装置,可在一次设备调试阶段精确测量高压断路器的闭环动作时间,在换流变第1次合闸前为分相合闸装置提供有效的时间校准定值。该装置已应用于某在运换流站中,换流变第1次合闸录波数据表明,测得的断路器静态闭环动作时间在分相合闸预控时间的预期范围内,换流变第1次合闸励磁涌流也能抑制在1 A(标幺值为0.001)内。
In order to effectively suppress excitation inrush current of the converter transformer caused by the first time closing and reduce impact of high amplitude excitation inrush current on the AC system and damage to the primary equipment,this paper designs a kind of measurement device for accurately measuring action time of the circuit breaker of the converter transformer which is able to conduct pre-control of the breaker closing control device.It firstly analyzes mechanism of the first time no-load excitation inrush current of the converter transformer and action characteristic of the breaker,and then develops a testing device for closing action time of the high voltage breaker which is able to accurately measure closing action time in commissioning stage of the primary equipment and provide effective time calibration value for the split phase closing device before the first time closing of the converter transformer.This device has been used in one operating converter station.The recording data of the first time closing indicates the measured static closing action time of the breaker is in the expected pre-control time range and excitation inrush current caused by the first time closing is less than 1 A(0.001 p.u.).
In order to effectively suppress excitation inrush current of the converter transformer caused by the first time closing and reduce impact of high amplitude excitation inrush current on the AC system and damage to the primary equipment,this paper designs a kind of measurement device for accurately measuring action time of the circuit breaker of the converter transformer which is able to conduct pre-control of the breaker closing control device.It firstly analyzes mechanism of the first time no-load excitation inrush current of the converter transformer and action characteristic of the breaker,and then develops a testing device for closing action time of the high voltage breaker which is able to accurately measure closing action time in commissioning stage of the primary equipment and provide effective time calibration value for the split phase closing device before the first time closing of the converter transformer.This device has been used in one operating converter station.The recording data of the first time closing indicates the measured static closing action time of the breaker is in the expected pre-control time range and excitation inrush current caused by the first time closing is less than 1 A(0.001 p.u.).
引文
[1]李晓华,张冬怡,吴立珠,等.换流变压器励磁涌流的特殊性分析[J].电网技术,2017,41(12):3869-2875.LI Xiaohua,ZHANG Dongyi,WU Lizhu,et al.Particularity analysis of converter transformer inrush current[J].Power System Technology,2017,41(12):3869-2875.
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[5]熊良根,郑嵘,陈晓明.一种励磁变与离相封闭母线反相解决方案[J].电力工程技术,2017,36(2):121-126.XIONG Lianggen,ZHENG Rong,CHEN Xiaoming.A solution for resversed phase-sequence of excitation transformen and enclosure type isolated-phase bus[J].Electric Power Engineering Teachnology,2017,36(2):121-126.
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[8]郝治国,张保会,褚云龙,等.变压器空载合闸励磁涌流抑制技术研究[J].高压电器,2005,41(2):81-84.HAO Zhiguo,ZHANG Baohui,CHU Yunlong,et al.Study on inrush current restraining technology when energizing noload transformer[J].High Voltage Apparatus,2005,41(2):81-84.
[9]杨通贇,李晓华,戴扬宇,等.换流变励磁涌流特性分析及其抑制[J].电网与清洁能源.2017,33(01):64-70,78.YANG Tongyun,LI Xiaohua,DAI Yangyu,et al.Analysis on magnetizing inrush current characteristic of converter transformer and its suppression[J].Power System and Clean Energy,2017,33(01):64-70,78
[10]孙庆森,张海峰,王猛,等.小波算法在变压器励磁涌流中的应用研究[J].电力系统保护与控制,2017,45(8):121-125.SUN Qingsen,ZHANG Haifeng,WANG Meng,et al.Application of wavelet algorithm in the transformer inrush current[J].Power System Protection and Control,2017,45(8):121-125.
[11]沃建栋,郑涛,万磊,等.基于合闸控制策略的变压器励磁涌流抑制措施研究[J].电力系统保护与控制,2010,38(22):32-36.WO Jiandong,ZHENG Tao,WAN Lei,et al.Study on inrush current suppression method based on the breaker control strategy[J].Power system Protection and Control,2010,38(22):32-36.
[12]张荣海.变压器励磁涌流的识别与抑制技术研究[D].重庆:重庆大学,2010.
[13]陈聪,李晓华,张冬怡,等.变压器涌流对直流50 Hz保护的影响机理与对策[J].广东电力,2017,30(9):91-96.CHEN Cong,LI Xiaohua,ZHANG Dongyi,et al.Influencing mechanism and countermeasures of transformer inrush current on DC 50 Hz protection[J].Guangdong Electoric Power,2017,30(9):91-96.
[14]夏经德,王波,路亮,等.能抗励磁涌流干扰的变压器差动保护改进算法[J].陕西电力,2016,44(1):5-10.XIA Jingde,WANG Bo,LU Liang,et al.Improved algorithm for transformer differential protection with ability to resist inrush current interference[J].Shaanxi Electric Power,2016,44(1):5-10.
[15]乌云高娃.变压器励磁涌流的分析与控制研究[D].武汉:武汉大学,2009.
[16]乌云高娃,刘涤尘,叶念国.基于变压器励磁涌流成因的涌流抑制策略[J].武汉大学学报,2008,41(6):83-86.WUYUN Gaowa,LIU Dichen,YE Nianguo.Controlling strategy to restrain excitation inrush current of transformer based on its cause[J].Engineering Journal of Wuhan University,2008,41(6):83-86.
[17]兀鹏越,余信,李毅,等.变压器励磁涌流抑制器工程应用及探讨[J].电力自动化设备,2012,32(6):145-149.WU Pengyue,YU Xin,LI Yi,et al.Engineering application of transformer excitation inrush suppressor[J].Electric Power Automation Equipment,2012,32(6):145-149.
[18]李晓华,罗龙波,谢金泉,等.高压内置型高阻抗变压器涌流特性对保护的影响[J].电力系统自动化,2016,40(11):108-114.LI Xiaohua,LUO Longbo,XIE Jingquan,et al.Analysis of the characteristics of high-voltage built-in high-impedance transformer inrush current impact on relaying[J].Automation of Electric Power Systems,2016,40(11):108-114.
[19]陈忠,张冬怡,李晓华,等.双断口断路器均压电容对换流变励磁涌流的影响[J].高电压技术,2017,43(10):3412-3418.CHEN Zhong,ZHANG Dongyi,LI Xiaohua,et al.Influence of grading capacitor of double-break circuit breaker on inrush current of converter transformer[J].High Voltage Engineering,2017,43(10):3412-3418.
[2]王贵年,卢琪,孙辉,等.核电厂主变压器空载合闸励磁涌流控制的分析[J].电力系统及其自动化学报,2014,26(10):84-90.WANG Guinian,LU Qi,SUN Hui,et al.Analysis of inrush current restraining technology for main transformer with empty-load connection in nuclear power station[J].Proceedings of the CSU-EPSA,2014,26(10):84-90.
[3]傅伟,赵莉华,梁勇,等.多台变压器空载合闸励磁涌流及其抑制方案的研究[J].电力系统保护与控制,2015,43(1):28-33.FU Wei,ZHAO Lihua,LIANG Yong,et al.Study on noload closing inrush current of transformer group and suppression measures[J].Power System Protection and Control,2015,43(1):28-33.
[4]余世峰,聂定珍,项冰.特高压直流换流变压器励磁涌流及其抑制[J].电力建设,2014,35(10):26-30.YU Shifeng,NIE Dingzhen,XIANG Bing.Magnetizing inrush current restraining for UHVDC converter transformer[J].Electric Power Construction,2014,35(10):26-30.
[5]熊良根,郑嵘,陈晓明.一种励磁变与离相封闭母线反相解决方案[J].电力工程技术,2017,36(2):121-126.XIONG Lianggen,ZHENG Rong,CHEN Xiaoming.A solution for resversed phase-sequence of excitation transformen and enclosure type isolated-phase bus[J].Electric Power Engineering Teachnology,2017,36(2):121-126.
[6]李振强,谷定燮,戴敏.特高压空载变压器谐振过电压和励磁涌流分析及抑制方法[J].高电压技术,2012,38(2):387-392.LI Zhenqiang,GU Dingxie,DAI Min.Analysis and suppression method of no-load ultrahigh voltage transformer resonance overvoltage and inrush current[J].High Voltage Engineering,2012,38(2):387-392.
[7]何越,林湘宁,黄景光.一种直接消除变压器合闸励磁涌流的方法[J].电工技术学报,2011,26(11):141-149.HE Yue,LIN Xiangning,HUANG Jingguang.A method to eliminate the magnetizing inrush current of energized transformers[J].Transactions of China Electro Technical Society,2011,26(11):141-149.
[8]郝治国,张保会,褚云龙,等.变压器空载合闸励磁涌流抑制技术研究[J].高压电器,2005,41(2):81-84.HAO Zhiguo,ZHANG Baohui,CHU Yunlong,et al.Study on inrush current restraining technology when energizing noload transformer[J].High Voltage Apparatus,2005,41(2):81-84.
[9]杨通贇,李晓华,戴扬宇,等.换流变励磁涌流特性分析及其抑制[J].电网与清洁能源.2017,33(01):64-70,78.YANG Tongyun,LI Xiaohua,DAI Yangyu,et al.Analysis on magnetizing inrush current characteristic of converter transformer and its suppression[J].Power System and Clean Energy,2017,33(01):64-70,78
[10]孙庆森,张海峰,王猛,等.小波算法在变压器励磁涌流中的应用研究[J].电力系统保护与控制,2017,45(8):121-125.SUN Qingsen,ZHANG Haifeng,WANG Meng,et al.Application of wavelet algorithm in the transformer inrush current[J].Power System Protection and Control,2017,45(8):121-125.
[11]沃建栋,郑涛,万磊,等.基于合闸控制策略的变压器励磁涌流抑制措施研究[J].电力系统保护与控制,2010,38(22):32-36.WO Jiandong,ZHENG Tao,WAN Lei,et al.Study on inrush current suppression method based on the breaker control strategy[J].Power system Protection and Control,2010,38(22):32-36.
[12]张荣海.变压器励磁涌流的识别与抑制技术研究[D].重庆:重庆大学,2010.
[13]陈聪,李晓华,张冬怡,等.变压器涌流对直流50 Hz保护的影响机理与对策[J].广东电力,2017,30(9):91-96.CHEN Cong,LI Xiaohua,ZHANG Dongyi,et al.Influencing mechanism and countermeasures of transformer inrush current on DC 50 Hz protection[J].Guangdong Electoric Power,2017,30(9):91-96.
[14]夏经德,王波,路亮,等.能抗励磁涌流干扰的变压器差动保护改进算法[J].陕西电力,2016,44(1):5-10.XIA Jingde,WANG Bo,LU Liang,et al.Improved algorithm for transformer differential protection with ability to resist inrush current interference[J].Shaanxi Electric Power,2016,44(1):5-10.
[15]乌云高娃.变压器励磁涌流的分析与控制研究[D].武汉:武汉大学,2009.
[16]乌云高娃,刘涤尘,叶念国.基于变压器励磁涌流成因的涌流抑制策略[J].武汉大学学报,2008,41(6):83-86.WUYUN Gaowa,LIU Dichen,YE Nianguo.Controlling strategy to restrain excitation inrush current of transformer based on its cause[J].Engineering Journal of Wuhan University,2008,41(6):83-86.
[17]兀鹏越,余信,李毅,等.变压器励磁涌流抑制器工程应用及探讨[J].电力自动化设备,2012,32(6):145-149.WU Pengyue,YU Xin,LI Yi,et al.Engineering application of transformer excitation inrush suppressor[J].Electric Power Automation Equipment,2012,32(6):145-149.
[18]李晓华,罗龙波,谢金泉,等.高压内置型高阻抗变压器涌流特性对保护的影响[J].电力系统自动化,2016,40(11):108-114.LI Xiaohua,LUO Longbo,XIE Jingquan,et al.Analysis of the characteristics of high-voltage built-in high-impedance transformer inrush current impact on relaying[J].Automation of Electric Power Systems,2016,40(11):108-114.
[19]陈忠,张冬怡,李晓华,等.双断口断路器均压电容对换流变励磁涌流的影响[J].高电压技术,2017,43(10):3412-3418.CHEN Zhong,ZHANG Dongyi,LI Xiaohua,et al.Influence of grading capacitor of double-break circuit breaker on inrush current of converter transformer[J].High Voltage Engineering,2017,43(10):3412-3418.
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