超B类感应电流快速释放装置冷态介质恢复特性计算及分析
|
摘要
针对超B类感应电流快速释放装置开断过程冷态介质恢复特性进行数值计算及分析。计算开断过程中气室内电场强度和SF6介质密度,依据流注理论,得到触头间临界击穿电压曲线,通过介质临界击穿电压与瞬态恢复电压(TRV)的对比,验证是否满足该快速释放装置冷态开断能力的要求。计算结果表明:动触头到达分闸点之后,气室内SF6介质密度基本保持不变,维持在27 kg/m3左右,而场强随开距的变化较明显,因此,电恢复过程是影响介质恢复特性的主要因素;超B类感应电流快速释放装置在冷态开断过程中,开距小于25 mm时临界击穿电压值小于TRV值,说明在此开距范围内,重击穿的可能性极大。
The dielectric recovery characteristics on cold state during interrupting course of super class B inducedcurrent high speed release device are studied by numerical calculations and analyses. The dynamic changes of elec-tric field intensity and the density of SF6 in gas chamber during interrupting course are calculated. Critical break-down voltage curve could be obtained based on the stream theory. By comparing the critical breakdown voltage andthe transient recovery voltage(TRV),to verify whether it meets the requirements of the cold state breaking ability ofthe high speed release device. The results show that:the density of SF6 in gas chamber is basically unchanged,whichremains at about 27 kg/m3,while the electric field intensity is obviously changed with opening range. Therefore,thedielectric strength recovery process is the main factor affecting the dielectric recovery characteristics. When superclass B induced current high speed release device in the cold state breaking process,the critical breakdown voltageis less than the TRV value with the opening range less than 25 mm,indicating that when the opening distance is inthis range,the possibility of restrike is very great.
The dielectric recovery characteristics on cold state during interrupting course of super class B inducedcurrent high speed release device are studied by numerical calculations and analyses. The dynamic changes of elec-tric field intensity and the density of SF6 in gas chamber during interrupting course are calculated. Critical break-down voltage curve could be obtained based on the stream theory. By comparing the critical breakdown voltage andthe transient recovery voltage(TRV),to verify whether it meets the requirements of the cold state breaking ability ofthe high speed release device. The results show that:the density of SF6 in gas chamber is basically unchanged,whichremains at about 27 kg/m3,while the electric field intensity is obviously changed with opening range. Therefore,thedielectric strength recovery process is the main factor affecting the dielectric recovery characteristics. When superclass B induced current high speed release device in the cold state breaking process,the critical breakdown voltageis less than the TRV value with the opening range less than 25 mm,indicating that when the opening distance is inthis range,the possibility of restrike is very great.
引文
[1]GODA Y,MATSUDA S,INABA T,et al.Forced extinctioncharacteristics of secondary arc on UHV(1 000 k V class)transmission lines[J].IEEE Transactions on Power Deliv-ery,1993,8(1):1322-1330.
[2]林莘,李璐维,李鑫涛,等.高压SF6/N2混合气体断路器冷态介质恢复特性计算分析[J].中国电机工程学报,2017,29(0):1-10.LIN Xin,LI Luwei,LI Xintao,et al.Calculation and analy-sis on cold state dielectric recovery characteristics in SF6/N2high voltage circuit breakers[J].Proceedings of the CSEE,2017,29(0):1-10.
[3]王连鹏,王尔智,刘海峰,等.SF6断路器空载介质恢复特性数值模拟中的耦合计算方法[J].电工技术学报,2007,22(6):59-64.WANG Lianpeng,WANG Erzhi,LIU Haifeng,et al.Cou-pling calculation method for numerical simulation of dielec-tric recovery property of SF6 circuit breaker under no-loadbreaking[J].Transactions of China Electrotechnical Society,2007,22(6):59-64.
[4]林莘.现代高压电器技术[M].北京:机械工业出版社,2002:234-248.LIN Xin.The modern high voltage electrical technology[M].Beijing:China Machine Press,2002:234-248.
[5]林莘,王飞鸣,刘卫东,等.高压SF6断路器冷态介质恢复特性试验研究[J].中国电机工程学报,2016,36(14):3973-3981.LIN Xin,WANG Feiming,LIU Weidong,et al.Experimentresearches on cold state dielectric recovery characteristicsin high voltage SF6 circuit breakers[J].Proceedings of theCSEE,2016,36(14):3973-3981.
[6]林莘,夏亚龙,刘卫东,等.电容器组投切用SF6断路器介质恢复特性数值计算与试验研究[J].电工技术学报,2015,30(17):161-171.LIN Xin,XIA Yalong,LIU Weidong,et al.The numericalcomputation and experiment research on dielectric recoverycharacteristics of SF6 circuit breaker for switching capacitorbank[J].Transactions of China Electrotechnical Society,2015,30(17):161-171.
[7]林莘,李鑫涛,王飞鸣,等.触头烧损对SF6断路器介质恢复特性的影响[J].高电压技术,2014,40(10):3125-3134.LIN Xin,LI Xintao,WANG Feiming,et al.Dielectric recov-ery characteristics of SF6 circuit breaker considering con-tact burning loss[J].High Voltage Engineering,2014,40(10):3125-3134.
[8]王亮,林莘.SF6断路器开断小电流介质临界击穿电压数值模拟计算分析[C]//2012输变电年会论文集.上海:[s.n.],2012:89-94.WANG Liang,LIN Xin.Numerical simulation analysis ofthe small current media critical breakdown voltage on SF6circuit breaker[C]//Transmission Annual Meeting Proceed-ings.Shanghai:[s.n.],2012:89-94.
[9]SEEGER M,SCHWINNE M,BINI R,et al.Dielectricrecovery in a high-voltage circuit breaker in SF6[J].Journalof Physics D:Applied Physics,2012,45(39):395204.
[10]何柏娜.800 k V GIS中采用快速接地开关抑制潜供电弧的研究[D].沈阳:沈阳工业大学,2006.HE Baina.The investigation of high speed groundingswitches on secondary arc in 800 k V GIS[D].Shenyang:Shenyang University of Technology,2006.
[11]林莘,何柏娜,徐建源.潜供电弧的仿真分析[J].高压电器,2007,43(1):8-10.LIN Xin,HE Baina,XU Jianyuan.Simulation and analysis ofsecondary arc[J].High Voltage Apparatus,2007,43(1):8-10.
[12]林莘,何柏娜,徐建源.超高压线路上潜供电弧熄灭特性的分析[J].高电压技术,2006,32(3):7-9.LIN Xin,HE Baina,XU Jianyuan.Analysis of secondaryarc extinction characteristics on UHV line[J].High VoltageEngineering,2006,32(3):7-9.
[13]娄颖,戴敏,何慧雯,等.1 000 k V交流紧凑型输电线路潜供电流和恢复电压计算分析[J].高电压技术,2011,37(8):1882-1887.LOU Ying,DAI Min,HE Huiwen,et al.Secondary arc cur-rentandrecoveryvoltageof1000k VACcompacttransmissionline[J].High Voltage Engineering,2011 37(8):1882-1887.
[14]高压交流隔离开关和接地开关:GB 1985—2004[S].2004.High voltage alternating-current disconnectors and earthingswitches:GB 1985—2004[S].2004.
[15]高压交流隔离开关和接地开关:DL/T 486—2010[S].2010.High voltage alternating-current disconnectors and earthing switches:DL/T 486—2010[S].2010.
[16]商立群,施围.快速接地开关在同杆双回输电线路中的应用[J].高电压技术,2004,30(8):14-16.SHANG Liqun,SHI Wei.Application of high speedgrounding switches in double-circuit transmission lines[J].High Voltage Engineering,2004,30(8):14-16.
[17]TRELLES J P,CHAZELAS C,VARDELLE A,et al.Arcplasma torch modeling[J].Journal of Thermal Spray Tech-nology,2009,5(18):728-752.
[18]张权,杨芳,祁海洋,等.直流条件下空气与SF6喷口电弧换热机理分析[J].高压电器,2016,52(12):41-47.ZHANG Quan,YANG Fang,QI Haiyang,et al.Analysis ofthe energy transport processes in DC air and SF6 nozzlearcs[J].High Voltage Apparatus,2016,52(12):41-47.
[19]王飞鸣.高压SF6断路器非平衡态电弧机理及开断特性研究[D].沈阳:沈阳工业大学,2016.WANG Feiming.Research on mechanism of non-equilibri-um plasma arc and breaking characteristics in high-voltageSF6 circuit breaker[D].Shenyang:Shenyang University ofTechnology,2016.
[2]林莘,李璐维,李鑫涛,等.高压SF6/N2混合气体断路器冷态介质恢复特性计算分析[J].中国电机工程学报,2017,29(0):1-10.LIN Xin,LI Luwei,LI Xintao,et al.Calculation and analy-sis on cold state dielectric recovery characteristics in SF6/N2high voltage circuit breakers[J].Proceedings of the CSEE,2017,29(0):1-10.
[3]王连鹏,王尔智,刘海峰,等.SF6断路器空载介质恢复特性数值模拟中的耦合计算方法[J].电工技术学报,2007,22(6):59-64.WANG Lianpeng,WANG Erzhi,LIU Haifeng,et al.Cou-pling calculation method for numerical simulation of dielec-tric recovery property of SF6 circuit breaker under no-loadbreaking[J].Transactions of China Electrotechnical Society,2007,22(6):59-64.
[4]林莘.现代高压电器技术[M].北京:机械工业出版社,2002:234-248.LIN Xin.The modern high voltage electrical technology[M].Beijing:China Machine Press,2002:234-248.
[5]林莘,王飞鸣,刘卫东,等.高压SF6断路器冷态介质恢复特性试验研究[J].中国电机工程学报,2016,36(14):3973-3981.LIN Xin,WANG Feiming,LIU Weidong,et al.Experimentresearches on cold state dielectric recovery characteristicsin high voltage SF6 circuit breakers[J].Proceedings of theCSEE,2016,36(14):3973-3981.
[6]林莘,夏亚龙,刘卫东,等.电容器组投切用SF6断路器介质恢复特性数值计算与试验研究[J].电工技术学报,2015,30(17):161-171.LIN Xin,XIA Yalong,LIU Weidong,et al.The numericalcomputation and experiment research on dielectric recoverycharacteristics of SF6 circuit breaker for switching capacitorbank[J].Transactions of China Electrotechnical Society,2015,30(17):161-171.
[7]林莘,李鑫涛,王飞鸣,等.触头烧损对SF6断路器介质恢复特性的影响[J].高电压技术,2014,40(10):3125-3134.LIN Xin,LI Xintao,WANG Feiming,et al.Dielectric recov-ery characteristics of SF6 circuit breaker considering con-tact burning loss[J].High Voltage Engineering,2014,40(10):3125-3134.
[8]王亮,林莘.SF6断路器开断小电流介质临界击穿电压数值模拟计算分析[C]//2012输变电年会论文集.上海:[s.n.],2012:89-94.WANG Liang,LIN Xin.Numerical simulation analysis ofthe small current media critical breakdown voltage on SF6circuit breaker[C]//Transmission Annual Meeting Proceed-ings.Shanghai:[s.n.],2012:89-94.
[9]SEEGER M,SCHWINNE M,BINI R,et al.Dielectricrecovery in a high-voltage circuit breaker in SF6[J].Journalof Physics D:Applied Physics,2012,45(39):395204.
[10]何柏娜.800 k V GIS中采用快速接地开关抑制潜供电弧的研究[D].沈阳:沈阳工业大学,2006.HE Baina.The investigation of high speed groundingswitches on secondary arc in 800 k V GIS[D].Shenyang:Shenyang University of Technology,2006.
[11]林莘,何柏娜,徐建源.潜供电弧的仿真分析[J].高压电器,2007,43(1):8-10.LIN Xin,HE Baina,XU Jianyuan.Simulation and analysis ofsecondary arc[J].High Voltage Apparatus,2007,43(1):8-10.
[12]林莘,何柏娜,徐建源.超高压线路上潜供电弧熄灭特性的分析[J].高电压技术,2006,32(3):7-9.LIN Xin,HE Baina,XU Jianyuan.Analysis of secondaryarc extinction characteristics on UHV line[J].High VoltageEngineering,2006,32(3):7-9.
[13]娄颖,戴敏,何慧雯,等.1 000 k V交流紧凑型输电线路潜供电流和恢复电压计算分析[J].高电压技术,2011,37(8):1882-1887.LOU Ying,DAI Min,HE Huiwen,et al.Secondary arc cur-rentandrecoveryvoltageof1000k VACcompacttransmissionline[J].High Voltage Engineering,2011 37(8):1882-1887.
[14]高压交流隔离开关和接地开关:GB 1985—2004[S].2004.High voltage alternating-current disconnectors and earthingswitches:GB 1985—2004[S].2004.
[15]高压交流隔离开关和接地开关:DL/T 486—2010[S].2010.High voltage alternating-current disconnectors and earthing switches:DL/T 486—2010[S].2010.
[16]商立群,施围.快速接地开关在同杆双回输电线路中的应用[J].高电压技术,2004,30(8):14-16.SHANG Liqun,SHI Wei.Application of high speedgrounding switches in double-circuit transmission lines[J].High Voltage Engineering,2004,30(8):14-16.
[17]TRELLES J P,CHAZELAS C,VARDELLE A,et al.Arcplasma torch modeling[J].Journal of Thermal Spray Tech-nology,2009,5(18):728-752.
[18]张权,杨芳,祁海洋,等.直流条件下空气与SF6喷口电弧换热机理分析[J].高压电器,2016,52(12):41-47.ZHANG Quan,YANG Fang,QI Haiyang,et al.Analysis ofthe energy transport processes in DC air and SF6 nozzlearcs[J].High Voltage Apparatus,2016,52(12):41-47.
[19]王飞鸣.高压SF6断路器非平衡态电弧机理及开断特性研究[D].沈阳:沈阳工业大学,2016.WANG Feiming.Research on mechanism of non-equilibri-um plasma arc and breaking characteristics in high-voltageSF6 circuit breaker[D].Shenyang:Shenyang University ofTechnology,2016.