新型线路防雷并联间隙切断工频续流研究
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摘要
雷击作为一种巨大扰动,给电力系统的安全运行带来严重挑战,作为现有防雷措施的补充,研制了一种新型线路防雷并联间隙。通过研究新型间隙内爆炸气流作用下工频续流的形态变化,发现爆炸气流能够带走电弧弧柱中高温的游离粒子,并填充为未游离的绝缘空气,从而快速切断工频续流,利用FLUENT软件对此过程进行仿真,并进行了实验验证。仿真与实验结果表明,半封闭空间内的爆炸气流能够在4 ms左右完全切断工频续流。
Lightning strike,as a huge disturbance,poses a serious challenge to the safety of power supply.As a supplement to the existing lightning protection measures,a new type of parallel line lightning protection gap is developed.Through the study of power frequency follow current morphological changes under the action of explosion airflow in the new gap,found the blast current can take away the free particles at high temperature in the arc column,and filled with free insulation air,can quickly cut off power frequency follow current.FLUENT software is used to simulate the process,and experimental verification is carried out.The simulation and experimental results show that the explosive air flow in the semi enclosed space can completely cut off power frequency follow current at about 4 ms.
Lightning strike,as a huge disturbance,poses a serious challenge to the safety of power supply.As a supplement to the existing lightning protection measures,a new type of parallel line lightning protection gap is developed.Through the study of power frequency follow current morphological changes under the action of explosion airflow in the new gap,found the blast current can take away the free particles at high temperature in the arc column,and filled with free insulation air,can quickly cut off power frequency follow current.FLUENT software is used to simulate the process,and experimental verification is carried out.The simulation and experimental results show that the explosive air flow in the semi enclosed space can completely cut off power frequency follow current at about 4 ms.
引文
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[23]王巨丰,陆俊杰,陈宙平,等.一种新型防雷保护间隙的探讨和研究[J].广西电力,2009,32(2):11-13,31.WANG Jufeng,LU Junjie,CHEN Zhouping,et al.Study and discussion on a new parallel gap lightning protection device[J].Guangxi Electric Power,2009,32(2):11-13,31.
[24]杨庆,谭威,司马文霞,等.并联间隙均匀复合绝缘子电压分布特性[J].高电压技术,2011,37(8):1910-1915.YANG Qing,TAN Wei,SI MA Wenxia,et al.Voltage equalizing characteristics of composite insulator with parallel gap lightning protection device employed[J].High Voltage Engineering,2011,37(8):1910-1915.
[25]过增元,赵文华.电弧和热等离子体[M].北京:科学出版社,1986.
[2]司马文霞,姜雄伟,彭庆军,等.35 k V并联补偿电容器组继电保护动作时过电压的分析及防护[J].高压电器,2017,53(08):1-8.SI MA Wenxia,JIANG Xiongwei,PENG Qingjun,et al.Analysis and protection of overvoltage of 35 k V shunt compensation capacitor bank When relay protection take action[J].High Voltage Apparatus,2017,53(08):1-8.
[3]上海市气象局.GB/T 21431-2008建筑物防雷装置检测技术规范[S].北京:中国标准出版社,2008.
[4]万帅,张伟,陈家宏,等.一种新型110 k V输电线路雷击闪络限制器的研制[J].高压电器,2017,53(04):184-190.WAN Shuai,ZHANG Wei,CHEN Jiahong,et al.Research and development of a new type lightning arresters for 110 k V ac transmission lines[J].High Voltage Apparatus,2017,53(04):184-190.
[5]熊军;陈俊武;陈智.杆塔地网接地电阻冲击特性的研究[J].电瓷避雷器,2005(6):42-45.机构外文缺失.Research on the impulsive characteristics of grounding resistance of transmission-line towers[J].Insulators and Surge Arresters,2005(6):42-45.
[6]SWANS B W.Nozzle arc interruption in supersonic flow[J].IEEE Transaction on Power Apparatus and Systems,1977,PAS-96(5):1697-1707.
[7]杨利彬.考虑冲击电晕的输电线路耐雷性能研究[D].重庆:重庆大学,2009.
[8]蔡元纪,童悦,刘彬,等.气体绝缘开关设备中的特快速暂态电流测量[J].高压电器,2016,52(9):34-39,45.CAI Yuanji,TONG Yue,LIU Bin,et al.Measurement of very fast transient current generated in gas-insulated switchgear[J].High Voltage Apparatus,2016,52(9):34-39,45.
[9]梅卫群,江燕如.建筑防雷工程与设计[M].北京:气象出版社,2004.
[10]赵云峰,王永兴,邹积岩,等.基于电弧图像的中频真空电弧阳极燃烧特性研究[J].高压电器,2017,53(03):41-46.ZHAO Yunfeng,WANG Yongxing,ZOU Jiyan,et al.Study on anode combustion characteristics of intermediate-frequency vacuum arc based on arc Image[J].High Voltage Apparatus,2017,53(03):41-46.
[11]WEN T,ZHANG Qg,MA Jt,et al.Discharge characteristics of long SF6 gas gap with and without insulator in GIS under VFTO and LI[J].CSEE Journal of Power and Energy Systems,2015,1(3):16-22.
[12]李丽生.在中国科协学术期刊编辑工作交流会上的讲话[C]//中国科协学术期刊编辑工作交流会资料选.北京:中国科学技术协会工作部,1991,2-10.
[13]廖文龙,刘守豹,许安,等.220 k V带纯空气间隙线路避雷器绕击耐受容量及避雷器轻型化潜力研究[J].电瓷避雷器,2017,1(1):100-105.LIAO Wenlong,LIU Shoubao,XU An,et al.Study on tolerance capacity of 220 k V line arrester with pure air gap under lightning shielding failure and its light type potential[J].Insulators and Surge Arresters,2017,1(1):100-105.
[14]WANG Jufeng,HUANG Zhidu,CHEN Zhouping,et al.The mechanism study of jet stream interrupter gap lightning protection device[C].Asia-Pacific International Symposium on Electromagnetic Compatibility.Beijing,China,2010.
[15]MCBRIDE J W,PECHRACH K,WEAVER P M.Arc motion and gas flow in current limiting circuit breakers operating with a low contact switching velocity[J].IEEETransactions on Components and Packaging Technologies,2002,25(3):427-433.
[16]刘孝为,刘渝根,王莉英,等.穿越山区的750 k V输电线路陆雷技术研究[J].陕西电力,2008,36(7):17-23.LIU Xiaowei,LIU Yugen,WANG Liying,et al.Lightning protection study on 750 k V transmission line built in mountainous region[J].Shaanxi Electric Power,2008,36(7):17-23.
[17]张权,杨芳,祁海洋,等.直流条件下空气与SF_6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 of the energy transport processes in DC air and SF6nozzle arcs[J].High Voltage Apparatus,2016,52(12):41-47.
[18]陈维江,孙昭英,王献丽,等.35 k V架空送电线路防雷用并联间隙研究[J].电网技术,2007,31(2):61-65.CHEN Weijiang,SUN Zhaoying,WANG Xianli,et al.Study on shunt gap lightning protection for 35 k V overhead transmission lines[J].Power System Technology,2007,31(2):61-65.
[19]敬亮兵.池州110 k V输电线路防雷技术研究[D].长沙:长沙理工大学,2009.
[20]黄清社,徐奔,彭利强,等.10 k V架空绝缘导线防雷保护的措施研究[J].高压电器,2010,46(12):32-35,40.HUANG Qingshe,XU Ben,PENG Liqiang,et al.Research on lighting protection of 10 k V overhead insulated distribution lines[J].High Voltage Apparatus,2010,46(12):32-35,40.
[21]葛栋,冯海全,袁利红,等.绝缘子串并联间隙的工频大电流燃弧试验[J].高电压技术,2008,34(7):1499-1503.GE Dong,FENG Haiquan,YUAN Lihong,et al.Experimental research on large power frequency current of parallel gap of insulator strings[J].High Voltage Engineering,2008,34(7):1499-1503.
[22]王巨丰,朱立波,王锟,等.配电线路气流灭弧防雷保护间隙的研究[J].现代电力,2008,25(5):14-19.WANG Jufeng,ZHU Libo,WANG Kun,et al.Distribution line gas blowing interrupter arc of gap lightning protection[J].Modern Electric Power,2008,25(5):14-19.
[23]王巨丰,陆俊杰,陈宙平,等.一种新型防雷保护间隙的探讨和研究[J].广西电力,2009,32(2):11-13,31.WANG Jufeng,LU Junjie,CHEN Zhouping,et al.Study and discussion on a new parallel gap lightning protection device[J].Guangxi Electric Power,2009,32(2):11-13,31.
[24]杨庆,谭威,司马文霞,等.并联间隙均匀复合绝缘子电压分布特性[J].高电压技术,2011,37(8):1910-1915.YANG Qing,TAN Wei,SI MA Wenxia,et al.Voltage equalizing characteristics of composite insulator with parallel gap lightning protection device employed[J].High Voltage Engineering,2011,37(8):1910-1915.
[25]过增元,赵文华.电弧和热等离子体[M].北京:科学出版社,1986.