750 kV线路高抗退出运行电磁暂态计算分析
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摘要
高压并联电抗器是长距离超高压线路的主要设备之一,因其自身故障率较高、电网结构改变、运行方式变化等原因,使高抗原始配置条件发生变化。针对某750 k V线路首端变电站高抗内部产生乙炔,给线路正常运行带来隐患,对其退出运行的可行性进行研究。应用EMTPE电磁暂态仿真软件,重点计算了线路在首端高抗退出工况下和正常运行工况下的工频过电压、操作过电压、潜供电流和恢复电压以及非全相运行过电压。计算结果表明该线路首端并联电抗器退出运行是可行的,系统工频过电压、操作过电压可满足运行要求,但需要将快速重合闸改为慢速重合闸。
750 kV HV reactor is one of important main equipment in long EHV lines,which have a high failure rateof defect and whose original configuration conditions change owing to the changing of grid structure and operationmode. There is an EHV line whose first end reactors had acetylene in its body to bring hidden dangers during the nor-mal operation,so we carries out electromagnetic transient studies on disengaging feasibility of. It is used EMTPE,fo-cusing on power frequency overvoltage,switch-on and single-phase reclosing operating overvoltage,secondary-arccurrents and recovery voltage,and fundamental resonance overvoltage when EHV reactors running in and out ofworking. The studies have shown that the decommissioning of original EHV shunt reactors of the study line is feasi-ble,the power frequency overvoltage and operating overvoltage meeting operational requirements but also need tochange the fast reclosing to slow reclosing.
750 kV HV reactor is one of important main equipment in long EHV lines,which have a high failure rateof defect and whose original configuration conditions change owing to the changing of grid structure and operationmode. There is an EHV line whose first end reactors had acetylene in its body to bring hidden dangers during the nor-mal operation,so we carries out electromagnetic transient studies on disengaging feasibility of. It is used EMTPE,fo-cusing on power frequency overvoltage,switch-on and single-phase reclosing operating overvoltage,secondary-arccurrents and recovery voltage,and fundamental resonance overvoltage when EHV reactors running in and out ofworking. The studies have shown that the decommissioning of original EHV shunt reactors of the study line is feasi-ble,the power frequency overvoltage and operating overvoltage meeting operational requirements but also need tochange the fast reclosing to slow reclosing.
引文
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[16]周沛洪,谷定燮,戴敏,等.1 000 k V特高压断路器的瞬态恢复电压[J].高电压技术,2009,35(2):211-217.ZHOU Peihong,GU Dinxie,DAI Min,et al.Research on transient recovery voltage of UHV circuit breakers[J].High Voltage Engineering,2009,35(2):211-217.
[17]林集明,顾霓鸿,王晓刚,等.特高压断路器的瞬态恢复电压研究[J].电网技术,2007,31(1):1-5.LIN Jiming,GU Nihong,WANG Xiaogang,et al.A Study on transient recovery voltage of UHV circuit breakers[J].Power System Technology,2007,31(1):1-5.
[18]郭志红,孙为民,高波,等.500 k V郓城—泰安紧凑型输电线路的潜供电流限制及单重时间配合[J].电网技术,2006,30(17):79-83.GUO Zhihong,SUN Weimin,GAO Bo,et al.A study on restriction of secondary arc current and time coordination of single phase reclosing for 500 k V compact transmission line from Yuncheng to Tai’an[J].Power System Technology,2006,30(17):79-83.
[19]曹荣江.电力系统潜供电弧自灭特性的模拟研究[M].北京:中国电力科学研究院,1994.CAO Rongjiang.Test study on self-extinction behavior of secondary arc on power system[M].Beijing:China Electric Power Research Institute,1994.
[20]曹荣江,顾霓鸿.交流高压断路器参数选用导则[M].北京:中国电力出版社,1997.CAO Rongjian,GU Nihong.Guide for parameter selection of AC HV circuit breaker[M].Beijing:China Electric Power Press,1997.
[21]曹荣江,顾霓鸿,盛勇.电力系统潜供电弧直灭特性的模拟研究[J].中国电机工程学报,1996,16(2):73-78.CAO Rongjiang,GU Nihong,SHENG Yong.Test study on selfextinction behavior of secondary arc on power system[J].Proceedings of the CSEE,1996,16(2):73-78.
[22]陈水明,许伟,何金良.1 000 k V交流输电线路的工频暂态过电压研究[J].电网技术,2005,29(19):31-35.CHEN Shuiming,XU Wei,HE Jinliang.Research on power frequencytransientovervoltagein1000 k VUHVACtransmission line[J].Power System Technology,2005,29(19):31-35.
[2]李志刚,杨林,项力恒,等.750 k V输变电示范工程设计特点[J].中国电力,2005,12(38):6-11.LI Zhigang,YANG Lin,XIANG Liheng,et al.Design characteristics of 750 k V transmission and transformation pilot project[J].Electric Power,2005,12(38):6-11.
[3]解广润.电力系统过电压[M].北京:水利电力出版社,1985.XIE Guangrun.Over voltage of power system[M].Beijing:Water Resources and Electric Power Press,1985.
[4]贾磊,蔡汉生,史丹,等.西电东送广东入口线路高压并联电抗器退出情况下过电压水平研究应用[J].广东电力,2011,24(10):20-24.JIA Lei,CAN Hansheng,SHI Dan,et al.Study on overvoltage level in the condition of quitting hv shunt reactors on inlet lines of guangdong in power transmission form west to east[J].Guangdong Electric Power,2011,24(10):20-24.
[5]彭向阳,陈禾,梁文进,等.500 k V惠汕线茅湖变电站解口后线路高压并联电抗器退出运行的可行性研究[J].广东电力,2011,24(10):10-15.PENG Xiangyang,CHEN He,LIANG Wenjin,et al.Feasibility study on disengaging hv shunt reactors of 500 k V Huishan line unlocked at Maohu substation[J].Guangdong Electric Power,2010,23(1):10-15.
[6]彭向阳,郑彬,梁文进,等.500 k V线路高抗退出运行及选择备用电磁暂态[J].高电压技术,2010,36(3):699-704.PENG Xiangyang,ZHENG Bin,LIANG Wenjing,et al.Electromagnetic transient analysis on disengaging feasibility and standby applicability of 500 k V high-voltage reactors[J].High Voltage Engineering,2010,36(3):699-704.
[7]柴敏修,叶中雄,张蔼蔷.500 k V繁昌变取消一组高抗对系统影响的论证[J].华东电力,2001(7):10-14.CHAI Minxiu,YE Zhongxiong,ZHANG Aiqiang.A study on effect of eliminating a group of HV reactor in fanchang500 k V substation on power system[J].Huadong Electric Power,2001(7):10-14.
[8]交流电气装置的过电压保护和绝缘配合:DL/T 620—1997[S].1997.Overvoltage protection and insulation coordination for AC electrical installations:DL/T 620—1997[S].1997.
[9]杜澍春,陈维江.交流电气装置过电压保护和绝缘配合[M].北京:中国电力出版社,1997.DU Pengchun,CHEN Weijiang.Overvoltage protection and insulation coordination of AC electric installations[M].Beijing:China Electric Power Press,1997.
[10]谷定燮,周沛洪,修木洪,等.交流1000 k V输电系统过电压和绝缘配合研究[J].高电压技术,2006,32(12):1-6.GU Dingxie,ZHOU Peihong,XIU Muhong,et al.Study on overvoltage and insulation coordination for 1 000 k V AC transmission system[J].High Voltage Engineering,2006,32(12):1-6.
[11]DOMMEL H W.电力系统电磁暂态计算理论[M].北京:水利电力出版社,1991.DOMMEL H W.Theory of electromagnetic transient computation for power system[M].Beijing:Water Resources and Electric Power Press,1991.
[12]陈珍珍,林集明.EMTP/EMTPE使用说明[R].北京:中国电力科学研究院,2009:46-51.CHEN Zhenzhen,LIN Jiming.The instructions of EMTPE[R].Beijing:China Electric Power Research Institute,2009:46-51.
[13]李永庄,林集明,曾绍华,等.电力系统电磁暂态计算理论[M].北京:水利水电出版社,1991:130-162.LI Yongzhuang,LIN Jiming,ZENG Shaohua,et al.The theory of transients in power system[M].Beijing:Water Resources and Electric Power Press,1991:130-162.
[14]王一宇,周宇帮.电力系统暂态[M].北京:中国电力出版社,2003:35-63.WANG Yiyu,ZHOU Yubang.Transients in power system[M].Beijing:China Electric Power Press,2003:35-63.
[15]施围,郭洁.电力系统过电压计算[M].第二版.北京:高等教育出版社,2006:197-215.SHIWei,GUOJie.Overvoltagecaculationinpowersystem[M].2nd ed.Beijing:High Education Press,2006:197-215.
[16]周沛洪,谷定燮,戴敏,等.1 000 k V特高压断路器的瞬态恢复电压[J].高电压技术,2009,35(2):211-217.ZHOU Peihong,GU Dinxie,DAI Min,et al.Research on transient recovery voltage of UHV circuit breakers[J].High Voltage Engineering,2009,35(2):211-217.
[17]林集明,顾霓鸿,王晓刚,等.特高压断路器的瞬态恢复电压研究[J].电网技术,2007,31(1):1-5.LIN Jiming,GU Nihong,WANG Xiaogang,et al.A Study on transient recovery voltage of UHV circuit breakers[J].Power System Technology,2007,31(1):1-5.
[18]郭志红,孙为民,高波,等.500 k V郓城—泰安紧凑型输电线路的潜供电流限制及单重时间配合[J].电网技术,2006,30(17):79-83.GUO Zhihong,SUN Weimin,GAO Bo,et al.A study on restriction of secondary arc current and time coordination of single phase reclosing for 500 k V compact transmission line from Yuncheng to Tai’an[J].Power System Technology,2006,30(17):79-83.
[19]曹荣江.电力系统潜供电弧自灭特性的模拟研究[M].北京:中国电力科学研究院,1994.CAO Rongjiang.Test study on self-extinction behavior of secondary arc on power system[M].Beijing:China Electric Power Research Institute,1994.
[20]曹荣江,顾霓鸿.交流高压断路器参数选用导则[M].北京:中国电力出版社,1997.CAO Rongjian,GU Nihong.Guide for parameter selection of AC HV circuit breaker[M].Beijing:China Electric Power Press,1997.
[21]曹荣江,顾霓鸿,盛勇.电力系统潜供电弧直灭特性的模拟研究[J].中国电机工程学报,1996,16(2):73-78.CAO Rongjiang,GU Nihong,SHENG Yong.Test study on selfextinction behavior of secondary arc on power system[J].Proceedings of the CSEE,1996,16(2):73-78.
[22]陈水明,许伟,何金良.1 000 k V交流输电线路的工频暂态过电压研究[J].电网技术,2005,29(19):31-35.CHEN Shuiming,XU Wei,HE Jinliang.Research on power frequencytransientovervoltagein1000 k VUHVACtransmission line[J].Power System Technology,2005,29(19):31-35.