带电分闸10kV空载电缆电弧暂态过程研究
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摘要
为研究带电分闸电缆时断口产生电弧的暂态过程及其影响因素,需解决传统电弧模型不能适用于电弧燃烧全阶段内弧安特性的问题。基于改进的电弧黑盒模型,在ATP-EMTP中建立了带电分闸10kV空载电缆仿真电路,研究了初相角、电缆长度、截面积改变对电弧燃烧暂态过程的影响,并得到了电弧电流与电容电流的变化关系。结果表明:电缆长度越长、截面积越大,分闸操作产生的电弧电流越大,燃弧时间越长,而初相角变化对其基本没有影响;分闸前电容电流越大,电弧电流越大,电容电流>0.2 A时,电弧电流变化更为明显。最后,根据带电投切试验结果,考虑一定安全裕度对现有消弧策略中提出了修正建议,将是否使用消弧开关的电容电流临界值0.5 A修正为0.45 A。
That traditional arc models can't fit the ampere characteristic of the whole arc burning period must be solvedin order to research the transient process and its factors during live breaking cables. Based on the improved arc black-box model,establish a stimulated circuit during live breaking 10kV non-loaded cable in ATP-EMTP. Then researchthe effects that the original phase angle,cable length,cable section area caused to the arc burning transient process,also find the relation between the arc current and the capacitive current. The results show that,longer and wider thecable is,larger arc current and longer burning time there will be,however,effects of the original phase is negligible;the arc current will get larger when the capacitive current gets larger,and the arc current will change more obviouslywhen the capacitive current is larger than 0.2 A. Finally,according to the result of the test of the electric arc,anamendment suggestion on the existing arc suppression strategy is proposed with considering a margin of safety.Whether or not use arc-extinguishing switch,the threshold value of capacitance current 0.5 A is amended to 0.45 A.
That traditional arc models can't fit the ampere characteristic of the whole arc burning period must be solvedin order to research the transient process and its factors during live breaking cables. Based on the improved arc black-box model,establish a stimulated circuit during live breaking 10kV non-loaded cable in ATP-EMTP. Then researchthe effects that the original phase angle,cable length,cable section area caused to the arc burning transient process,also find the relation between the arc current and the capacitive current. The results show that,longer and wider thecable is,larger arc current and longer burning time there will be,however,effects of the original phase is negligible;the arc current will get larger when the capacitive current gets larger,and the arc current will change more obviouslywhen the capacitive current is larger than 0.2 A. Finally,according to the result of the test of the electric arc,anamendment suggestion on the existing arc suppression strategy is proposed with considering a margin of safety.Whether or not use arc-extinguishing switch,the threshold value of capacitance current 0.5 A is amended to 0.45 A.
引文
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[13]王立军,贾申利,史宗谦,等.真空电弧磁流体动力学模型与仿真研究[J].中国电机工程学报,2005,25(4):113-118.WANG Lijun,JIA Shenli,SHI Zongqian,et al.MHD model and simulation research of vacuum arc[J].Proceedings of the CSEE,2005,25(4):113-118.
[14]金海望,骆立实,胡尊张,等.中性点经高阻接地电网故障电弧建模与弧光接地分析[J].电气自动化,2014,36(4):54-55.JIN Haiwang,LUO Lishi,HU Zunzhang,et al.An analysis on arc modeling and arc light grounding for grid faults of high-resistance grounding of the neutral point[J].Electrical Automation,2014,36(4):54-55.
[15]许晔,郭谋发,陈彬,等.配电网单相接地建模仿真分析研究[J].电力系统保护与控制,2015(7):57-64.XU Ye,GUO Moufa,CHEN Bin,et al.Modeling and simulation analysis of arc in distribution network[J].Power System Protection and Control,2015(7):57-64.
[16]李震球,王时胜,吴丽娜.一种谐振接地系统电弧高阻接地故障选线新方法及仿真[J].电力系统保护与控制,2014,42(17):44-49.LI Zhenqiu,WANG Shisheng,WU Lina.A new method and simulation for arcing high-impedance-grounding fault line selection in resonant grounded system[J].Power System Protection and Control,2014,42(17):44-49.
[17]曹珍崇,杨学昌,郅啸,等.电缆配电网操作过电压的计算与分析[J].清华大学学报(自然科学版),2007,47(4):466-469.CAO Zhenchong,YANG Xuechang,ZHI Xiao,et al.Switching overvoltages in coaxial underground cable distribution networks[J].Journal of Tsinghua University(Science and Technology),2007,47(4):466-469.
[18]郑传广,刘凯,刘庭,等.10 k V配电线路旁路作业电磁暂态过程仿真计算研究[J].电工电气,2013(3):7-12.ZHENG Chuanguang,LIU Kai,LIU Ting,et al.Simulative calculation research on bypass work electromagnetic transient process of 10 k V distribution lines[J].Electrotechnics Electric,2013(3):7-12.
[19]王建军,吴季浩,苏梓铭.10 k V电缆终端带电作业仿真及试验研究[J].电力建设,2014,35(2):41-46.WANG Jianjun,WU Jihao,SU Ziming.Simulation and experimental research on live working technology for 10 k V cable terminal[J].Electric Power Construction,2014,35(2):41-46.
[20]王广利,吴爱军,陈宇.拆,搭电缆引线时电弧建模仿真研究及消弧策略优化[J].华东电力,2012,40(12):2299-2302.WANG Guangli,WU Aijun,CHEN Yu.Arc modeling and simulation during cable lead live breaking or connecting and arc suppressing strategy optimization[J].East China Electric Power,2012,40(12):2299-2302.
[21]赵玉林.高电压技术[M].北京:中国电力出版社,2009.ZHAO Yulin.High voltage engineering[M].Beijing:China Electric Power Press,2009.
[22]WU Xixiu,LI Zhenbiao,TIAN Yun,et al.Investigate on the simulation of black-box arc model[C]//2011 1st International Conference on Electric Power Equipment-Switching Technology(ICEPE-ST).[S.l.]:IEEE,2011:629-636.
[23]SMEETS R P P,KERTESZ V.Evaluation of high-voltage circuit breaker performance with a validated arc model[J].IEE Proceedings of the Generation,Transmission and Distribution,2000,147(2):121-125.
[24]TERZIJA V,KOGLIN H J.Long arc in free air:Testing,modeling and parameter estimation.Ⅰ[C]//International Conference on Harmonics and Quality of Power.[S.l.]:IEEE,2000:404-409.
[25]TERZIJA V,KOGLIN H J.Long arc in free air:Testing,modeling and parameter estimation.Ⅱ[C]//International Conference on Harmonics and Quality of Power.[S.l.]:IEEE,2000:404-409.
[26]TERZIJA V,PRESTON G,POPOV M,et al.New static“Air Arc”EMTP model of long arc in free air[J].IEEE Transactions on Power Delivery,2011,26(3):1344-1353.
[27]王其平.电器电弧理论[M].北京:机械工业出版社,1982.WANG Qiping.Electrical apparatus arc theory[M].Beijing:China Machine Press,1982.
[28]ELKALASHY N I,LEHTONEN M,DARWISH H A,et al.Modeling and experimental verification of high impedance arcing fault in medium voltage networks[J].IEEE Transactions on Dielectrics and Electrical Insulation,2007,14(2):375-383.
[29]苍斌.电力电缆[M].北京:中国电力出版社,2010.CANG Bin.Electrical power cable[M].Beijing:China Electric Power Press,2010.
[30]带电作业绝缘配合导则:DL/T 876—2004[S].北京:中国电力出版社,2004.Guide of insulation co-ordination for live working:DL/T876—2004[S].Beijing:China Electric Power Press,2004.
[2]舒胜文,黄道春,阮江军.真空开关电弧开断过程的数值仿真方法研究进展[J].高压电器,2014,50(2):131-138.SHU Shengwen,HUANG Daochun,RUAN Jiangjun.Review of numerical simulation methods for arc interruption process of vacuum switch[J].High Voltage Apparatus,2014,50(2):131-138.
[3]林莘,王亮,徐建源,等.非平衡态双温度SF6离子体电弧数学模型研究[J].高压电器,2015,51(3):1-7.LIN Xin,WANG Liang,XU Jianyuan,et al.Non-equilibrium dual temperature SF6 plasma arc mathematical model research[J].High Voltage Apparatus,2015,51(3):1-7.
[4]孙袆.低压交流接触器电弧动态数学模型和温度场仿真研究[D].北京:华北电力大学,2010.SUN Yi.The study low-voltage on dynamic mathematical model of AC contactor arc and simulation of temperature field[D].Beijing:North China Electric Power University,2010.
[5]王震洲.低压电器开关电弧运动机理及仿真研究[D].保定:华北电力大学,2009.WANG Zhenzhou.The study on movement mechanism and simulation of low voltage apparatus switching arc[D].Baoding:North China Electric Power University,2009.
[6]王晓远,高淼,赵玉双.阻性负载下低压故障电弧特性分析[J].电力自动化设备,2015,35(5):106-110.WANG Xiaoyuan,GAO Miao,ZHAO Yushuang.Characteristic analysis of low-voltage arc fault in resistive load conditions[J].Electric Power Automation Equipment,2015,35(5):106-110.
[7]荣命哲,杨飞,吴翊,等.直流断路器电弧研究的新进展[J].电工技术学报,2014,29(1):1-9.RONG Mingzhe,YANG Fei,WU Yi,et al.New developments in switching arc research in DC circuit breaker[J].Transactions of China Electrotechnical Society,2014,29(1):1-9.
[8]林莘,王娜,徐建源.动态电弧模型下特快速瞬态过电压特性的计算与分析[J].中国电机工程学报,2012,32(16):157-164.LIN Xin,WANG Na,XU Jianyuan.Calculation and analysis of very fast transient over-voltage characteristic on the condition of dynamic arcing model[J].Proceedings of the CSEE,2012,32(16):157-164.
[9]李兴文,陈德桂.空气开关电弧的数学模型及其特性的研究综述[J].高压电器,2007,43(4):269-273.LI Xingwen,CHEN Degui.Review of the investigations on the modeling and characteristics of air switching arc[J].High Voltage Apparatus,2007,43(4):269-273.
[10]冷雪.开关电器电弧混沌特性判定与调控[D].沈阳:沈阳工业大学,2014.LENG Xue.The chaos characteristic identification and control of the arc in the switches[D].Shenyang:Shenyang University of Technology,2014.
[11]季良,陈德桂,刘颖异,等.利用电弧动态数学模型的低压断路器开断过程仿真分析[J].中国电机工程学报,2009,29(21):107-113.JI Liang,CHEN Degui,LIU Yingyi,et al.Simulation of the interruption process of low voltage circuit breaker using dynamic mathematic arc model[J].Proceedings of the CSEE,2009,29(21):107-113.
[12]WANG Zhenxing,GENG Yingsan,LIU Zhiyuan.Stepwise behavior of free recovery processes after diffused vacuum arc extinction[J].IEEE Transactions on Dielectrics and Electrical Insulation,2012,19(2):582-590.
[13]王立军,贾申利,史宗谦,等.真空电弧磁流体动力学模型与仿真研究[J].中国电机工程学报,2005,25(4):113-118.WANG Lijun,JIA Shenli,SHI Zongqian,et al.MHD model and simulation research of vacuum arc[J].Proceedings of the CSEE,2005,25(4):113-118.
[14]金海望,骆立实,胡尊张,等.中性点经高阻接地电网故障电弧建模与弧光接地分析[J].电气自动化,2014,36(4):54-55.JIN Haiwang,LUO Lishi,HU Zunzhang,et al.An analysis on arc modeling and arc light grounding for grid faults of high-resistance grounding of the neutral point[J].Electrical Automation,2014,36(4):54-55.
[15]许晔,郭谋发,陈彬,等.配电网单相接地建模仿真分析研究[J].电力系统保护与控制,2015(7):57-64.XU Ye,GUO Moufa,CHEN Bin,et al.Modeling and simulation analysis of arc in distribution network[J].Power System Protection and Control,2015(7):57-64.
[16]李震球,王时胜,吴丽娜.一种谐振接地系统电弧高阻接地故障选线新方法及仿真[J].电力系统保护与控制,2014,42(17):44-49.LI Zhenqiu,WANG Shisheng,WU Lina.A new method and simulation for arcing high-impedance-grounding fault line selection in resonant grounded system[J].Power System Protection and Control,2014,42(17):44-49.
[17]曹珍崇,杨学昌,郅啸,等.电缆配电网操作过电压的计算与分析[J].清华大学学报(自然科学版),2007,47(4):466-469.CAO Zhenchong,YANG Xuechang,ZHI Xiao,et al.Switching overvoltages in coaxial underground cable distribution networks[J].Journal of Tsinghua University(Science and Technology),2007,47(4):466-469.
[18]郑传广,刘凯,刘庭,等.10 k V配电线路旁路作业电磁暂态过程仿真计算研究[J].电工电气,2013(3):7-12.ZHENG Chuanguang,LIU Kai,LIU Ting,et al.Simulative calculation research on bypass work electromagnetic transient process of 10 k V distribution lines[J].Electrotechnics Electric,2013(3):7-12.
[19]王建军,吴季浩,苏梓铭.10 k V电缆终端带电作业仿真及试验研究[J].电力建设,2014,35(2):41-46.WANG Jianjun,WU Jihao,SU Ziming.Simulation and experimental research on live working technology for 10 k V cable terminal[J].Electric Power Construction,2014,35(2):41-46.
[20]王广利,吴爱军,陈宇.拆,搭电缆引线时电弧建模仿真研究及消弧策略优化[J].华东电力,2012,40(12):2299-2302.WANG Guangli,WU Aijun,CHEN Yu.Arc modeling and simulation during cable lead live breaking or connecting and arc suppressing strategy optimization[J].East China Electric Power,2012,40(12):2299-2302.
[21]赵玉林.高电压技术[M].北京:中国电力出版社,2009.ZHAO Yulin.High voltage engineering[M].Beijing:China Electric Power Press,2009.
[22]WU Xixiu,LI Zhenbiao,TIAN Yun,et al.Investigate on the simulation of black-box arc model[C]//2011 1st International Conference on Electric Power Equipment-Switching Technology(ICEPE-ST).[S.l.]:IEEE,2011:629-636.
[23]SMEETS R P P,KERTESZ V.Evaluation of high-voltage circuit breaker performance with a validated arc model[J].IEE Proceedings of the Generation,Transmission and Distribution,2000,147(2):121-125.
[24]TERZIJA V,KOGLIN H J.Long arc in free air:Testing,modeling and parameter estimation.Ⅰ[C]//International Conference on Harmonics and Quality of Power.[S.l.]:IEEE,2000:404-409.
[25]TERZIJA V,KOGLIN H J.Long arc in free air:Testing,modeling and parameter estimation.Ⅱ[C]//International Conference on Harmonics and Quality of Power.[S.l.]:IEEE,2000:404-409.
[26]TERZIJA V,PRESTON G,POPOV M,et al.New static“Air Arc”EMTP model of long arc in free air[J].IEEE Transactions on Power Delivery,2011,26(3):1344-1353.
[27]王其平.电器电弧理论[M].北京:机械工业出版社,1982.WANG Qiping.Electrical apparatus arc theory[M].Beijing:China Machine Press,1982.
[28]ELKALASHY N I,LEHTONEN M,DARWISH H A,et al.Modeling and experimental verification of high impedance arcing fault in medium voltage networks[J].IEEE Transactions on Dielectrics and Electrical Insulation,2007,14(2):375-383.
[29]苍斌.电力电缆[M].北京:中国电力出版社,2010.CANG Bin.Electrical power cable[M].Beijing:China Electric Power Press,2010.
[30]带电作业绝缘配合导则:DL/T 876—2004[S].北京:中国电力出版社,2004.Guide of insulation co-ordination for live working:DL/T876—2004[S].Beijing:China Electric Power Press,2004.