特高压换流变压器对称性涌流的生成及其对大差保护的影响
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摘要
借鉴和应涌流分析方法,分析特高压一组换流变压器空投时对称性涌流的产生机理和变化特点。基于工程实际参数建立详尽的特高压直流输电的仿真模型,对特高压换流站内一组换流变压器空投产生对称性涌流现象进行了仿真分析。阐明二次谐波制动判据失去闭锁能力造成特高压换流变压器大差保护误动的机理,为提升特高压换流站大差保护的动作可靠性提供分析手段。
By drawing on the analytical method of sympathetic inrush current,the generation mechanism and variation characteristics of symmetrical inrush current caused by the energization of a set of two ultra-high voltage(UHV)converter transformers are dealt with.Based on an ultra-high voltage direct current(UHVDC)transmission project simulation model,the phenomenon of symmetrical inrush currents in the cases of UHV converter transformer energization are simulated.The reason for failure of the secondary harmonic restraint criterion to block the converter connection-transformer differential protection is explained,which provides a means for enhancing the operation reliability of the converter transformer differential protection for UHV converter stations.
By drawing on the analytical method of sympathetic inrush current,the generation mechanism and variation characteristics of symmetrical inrush current caused by the energization of a set of two ultra-high voltage(UHV)converter transformers are dealt with.Based on an ultra-high voltage direct current(UHVDC)transmission project simulation model,the phenomenon of symmetrical inrush currents in the cases of UHV converter transformer energization are simulated.The reason for failure of the secondary harmonic restraint criterion to block the converter connection-transformer differential protection is explained,which provides a means for enhancing the operation reliability of the converter transformer differential protection for UHV converter stations.
引文
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[4]黄少锋,申洪明,刘玮,等.交直流互联系统对换流变压器差动保护的影响分析及对策[J].电力系统自动化,2015,39(23):158-164.DOI:10.7500/AEPS20150325005.HUANG Shaofeng,SHEN Hongming,LIU Wei,et al.Effect of AC/DC interconnected network on transformer protection and its countermeasures[J].Automation of Electric Power Systems,2015,39(23):158-164.DOI:10.7500/AEPS20150325005.
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[8]王奕,戚宣威,罗航,等.复杂和应涌流及其对电流差动保护的影响[J].电力系统自动化,2014,38(6):98-105.DOI:10.7500/AEPS20130531012.WANG Yi,QI Xuanwei,LUO Hang,et al.Complex sympathetic inrush and its influence on current differential protection[J].Automation of Electric Power Systems,2014,38(6):98-105.DOI:10.7500/AEPS20130531012.
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[11]戚宣威,尹项根,张哲,等.变压器空投导致相邻元件差动保护误动分析及防范措施[J].电力系统自动化,2016,40(3):129-134.DOI:10.7500/AEPS20150522004.QI Xuanwei,YIN Xianggen,ZHANG Zhe,et al.Analysis on mal-operation for current differential protection due to adjacent transformer switching-on and its countermeasures[J].Automation of Electric Power Systems,2016,40(3):129-134.DOI:10.7500/AEPS20150522004.
[12]田庆.12脉动换流变压器对称性涌流现象分析[J].电力系统保护与控制,2011,39(23):133-137.TIAN Qing.Analysis on the symmetry inrush of 12impulsive convertor transformer[J].Power System Protection and Control,2011,39(23):133-137.
[13]Application guide of PSCAD and EMTDC[S].2007.
[14]张晓宇,文继锋,程晓,等.换流变压器励磁涌流特性及其对差动保护的影响[J].江苏电机工程,2013,32(5):52-58.ZHANG Xiaoyu,WEN Jifeng,CHENG Xiao,et al.The characteristic of the inrush current of converter transformer and its impacts on differential protection[J].Jiangsu Electrical Engineering,2013,32(5):52-58.
[15]LIN Xiangning,LU Junsheng,TIAN Qing,et al.Abnormal operation behavior analysis and countermeasures on the differential protection of converter transformer[J].Electrical Power and Energy Systems,2015,64:516-525.
[16]曹京京.Hausdorff距离的计算原理及其在二维匹配中的应用[D].大连:大连理工大学,2013.
[17]练仕榴.生物医学信号的相似性度量研究[D].天津:天津理工大学,2011.
[2]曾庆科,李锋锋,郝跃东,等.特高压直流单极大地回线运行方式下分流分析及其对策[J].电力系统自动化,2014,38(22):123-127.DOI:10.7500/AEPS20130721003.ZENG Qingke,LI Fengfeng,HAO Yuedong,et al.Aanlysis on spill current of UHVDC transmission system in monopolegrounded return operation mode and its countermeasures[J].Automation of Electric Power Systems,2014,38(22):123-127.DOI:10.7500/AEPS20130721003.
[3]张红跃.换流变大差保护励磁涌流识别的思考[J].电力系统保护与控制,2011,39(20):151-154.ZHANG Hongyue.Thinking of converter connectiontransformer differential protection’s magnetizing inrush current judgement[J].Power System Protection and Control,2011,39(20):151-154.
[4]黄少锋,申洪明,刘玮,等.交直流互联系统对换流变压器差动保护的影响分析及对策[J].电力系统自动化,2015,39(23):158-164.DOI:10.7500/AEPS20150325005.HUANG Shaofeng,SHEN Hongming,LIU Wei,et al.Effect of AC/DC interconnected network on transformer protection and its countermeasures[J].Automation of Electric Power Systems,2015,39(23):158-164.DOI:10.7500/AEPS20150325005.
[5]WANG F,QI X,WANG Y,et al.A sympathetic inrush detection method based on on-line magnet flux calculation[C]//2014International Conference on Power System Technology(POWERCON),October 20-22,2014,Chengdu,China:700-704.
[6]BRONZEADO H,YACAMINI R.Phenomenon of sympathetic interaction between transformers caused by inrush transients[J].IEE Proceedings:Science,Measurement and Technology,1995,142(4):323-329.
[7]张雪松,何奔腾,张建松.变压器和应涌流的产生机理及其影响因素研究[J].电力系统自动化,2005,29(6):15-19.ZHANG Xuesong,HE Benteng,ZHANG Jiansong.Principle and influencing factors of the transformer sympathetic inrush[J].Automation of Electric Power Systems,2005,29(6):15-19.
[8]王奕,戚宣威,罗航,等.复杂和应涌流及其对电流差动保护的影响[J].电力系统自动化,2014,38(6):98-105.DOI:10.7500/AEPS20130531012.WANG Yi,QI Xuanwei,LUO Hang,et al.Complex sympathetic inrush and its influence on current differential protection[J].Automation of Electric Power Systems,2014,38(6):98-105.DOI:10.7500/AEPS20130531012.
[9]袁宇波,李德佳,陆于平,等.变压器和应涌流的物理机理及其对差动保护的影响[J].电力系统自动化,2005,29(6):9-14.YUAN Yubo,LI Dejia,LU Yuping,et al.Physical mechanism of sympathetic inrush of transformer and its influence on differential protection[J].Automation of Electric Power Systems,2005,29(6):9-14.
[10]毕大强,王祥珩,李德佳,等.变压器和应涌流的理论探讨[J].电力系统自动化,2005,29(6):1-8.BI Daqiang,WANG Xiangheng,LI Dejia,et al.Theory analysis of the sympathetic inrush in operating transformer[J].Automation of Electric Power Systems,2005,29(6):1-8.
[11]戚宣威,尹项根,张哲,等.变压器空投导致相邻元件差动保护误动分析及防范措施[J].电力系统自动化,2016,40(3):129-134.DOI:10.7500/AEPS20150522004.QI Xuanwei,YIN Xianggen,ZHANG Zhe,et al.Analysis on mal-operation for current differential protection due to adjacent transformer switching-on and its countermeasures[J].Automation of Electric Power Systems,2016,40(3):129-134.DOI:10.7500/AEPS20150522004.
[12]田庆.12脉动换流变压器对称性涌流现象分析[J].电力系统保护与控制,2011,39(23):133-137.TIAN Qing.Analysis on the symmetry inrush of 12impulsive convertor transformer[J].Power System Protection and Control,2011,39(23):133-137.
[13]Application guide of PSCAD and EMTDC[S].2007.
[14]张晓宇,文继锋,程晓,等.换流变压器励磁涌流特性及其对差动保护的影响[J].江苏电机工程,2013,32(5):52-58.ZHANG Xiaoyu,WEN Jifeng,CHENG Xiao,et al.The characteristic of the inrush current of converter transformer and its impacts on differential protection[J].Jiangsu Electrical Engineering,2013,32(5):52-58.
[15]LIN Xiangning,LU Junsheng,TIAN Qing,et al.Abnormal operation behavior analysis and countermeasures on the differential protection of converter transformer[J].Electrical Power and Energy Systems,2015,64:516-525.
[16]曹京京.Hausdorff距离的计算原理及其在二维匹配中的应用[D].大连:大连理工大学,2013.
[17]练仕榴.生物医学信号的相似性度量研究[D].天津:天津理工大学,2011.