高海拔地区330kV输电线路复合绝缘子加装瓷/瓷复合绝缘子方式研究
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摘要
330 kV玉树联网工程频繁发生跳闸故障,给玉树地区的供电可靠性带来了极大的风险,为增强线路外绝缘对复杂气候环境跳闸风险的抵御能力,指导线路外绝缘差异化改造,开展了该项研究。首先在海拔2 254 m和4 200 m地区对330 kV复合绝缘子上下端加装瓷双伞/磁复合绝缘子并安装和取消上下均压环进行工频、雷电、操作间隙击穿试验,研究各种加装方式下间隙击穿电压的提高程度,然后采用Ansoft电场仿真软件及紫外电晕测试,研究安装和取消上下均压环对电场分布的影响。试验结果得出了高海拔地区330 kV复合绝缘子加装一片瓷/磁复合绝缘子时平均放电电压提高程度在3%左右,结合施工难度考虑,绝缘子加装在接地端更有利,同时无法将上均压环安装在新加装绝缘子上端的情况下,拆除上均压环更有利。
Cause of the tripping operation always happened in Yushu area from 330 kV Yushu project.It's a big risk for Yushu area to have a reliability of power supply.On the other hand,in order to improve the defence ability of tripping operation and direct the differential reform of external insulation of lines,we are on this study.This study is a test of installing porcelain double umbrella/magnetic composite insulators and abrogating grading ring,then do power frequency gap discharge,ray wave gap discharge and the operating wave gap discharge test on 2 254 m and 4 200 m area,and also have a study on the level of the breakdown voltage under all kinds of install ways.Then adopt Ansoft electric simulation software and ultraviolet corona test,study the effect of install and abrogate the influence of grading ring up and down on the electric field distribution.The result of the test is that voltage level at around 3%when installing porcelain double umbrella/magnetic composite insulators in 330 kV high altitude.In order to consider the construction difficulty,it is better to install the insulator on the floor.It is also better to dismantle the equalizing ring when it can't install.
Cause of the tripping operation always happened in Yushu area from 330 kV Yushu project.It's a big risk for Yushu area to have a reliability of power supply.On the other hand,in order to improve the defence ability of tripping operation and direct the differential reform of external insulation of lines,we are on this study.This study is a test of installing porcelain double umbrella/magnetic composite insulators and abrogating grading ring,then do power frequency gap discharge,ray wave gap discharge and the operating wave gap discharge test on 2 254 m and 4 200 m area,and also have a study on the level of the breakdown voltage under all kinds of install ways.Then adopt Ansoft electric simulation software and ultraviolet corona test,study the effect of install and abrogate the influence of grading ring up and down on the electric field distribution.The result of the test is that voltage level at around 3%when installing porcelain double umbrella/magnetic composite insulators in 330 kV high altitude.In order to consider the construction difficulty,it is better to install the insulator on the floor.It is also better to dismantle the equalizing ring when it can't install.
引文
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[15]黄玲,文习山,蓝磊,等.基于改进遗传算法的特高压绝缘子均压环优化[J].高电压技术,2009,35(3):218-224.HUANG Ling,WEN Xishan,LAN Lei,et a1.Optimizationof grading tings for UHV composite insulator by the improv edga[J].High Voltage Engineering,2009,35(3):218-224.
[16]钱之银,叶自强,张宇.北兰线500 kV合成绝缘子断串原因试验分析[J].高电压技术,2004,30(6):24-26.QIAN Zhiyin,YE Ziqiang,ZHANG Yu.The test and analysis of reasonof breakdown of Siemens 500 kV composite insulator[J].Hi gh Voltage Engineering,2004,30(6):24-26.
[17]张畅生,王晓刚,黄立虹.500 kV惠汕线合成绝缘子芯棒脆断事故分析[J].电网技术,2002,26(6):71-72.ZHANG Changsheng,WANG Xiaogang,HUANG Lihong.Analysise of composite insulator mandrill breaking on500 kV Huishan line[J].Power System Technology,2002,26(6):71-72.
[18]张鸣,陈勉.500 kV罗北甲线合成绝缘子芯棒脆断原因分析[J].电网技术,2003,27(12):51-53.ZHANG Ming,CHEN Mian.Analysis on core brittle fracture of composite insulators in a certain 500 kV transmission line[J].Power System Technology,2003,27(12):51-53.
[19]孙西昌,彭宗仁,党镇平,等.特高压交流架空线路用复合绝缘子均压特性研究[J].高压电器,2008,44(6):527-530.SUN Xichang,PENG Zongren,DANG Zhengping,et a1.Study on electrical stress grading of composite insulators for UHV transmission lines[J].High Voltage Apparatus,2008,44(6):527-530.
[20]马奎,车俊禄,樊益平,等.加装瓷绝缘子元件对330 kV耐张复合绝缘子串电场的影响分析[J].电瓷避雷器,2013(3):8-14.MA Kui,CHE Junlu,FAN Yiping,et al.Analysis on the impact of the installation of porcelain insulator element330 kV tension composite insulator strings electric field[J].Insulators And Surge Arresters,2013(3):8-14.
[21]江汛,王仲奕.330 kV带均压环的棒形悬式复合绝缘子电场有限元分析[J].高压电器,2004,40(3):215-217.JIAN Xun,WANG Zhongyi.Analysis of the electric field of330 kV composite insulator with grading rings[J].High Voltage Apparatus,2004,40(3):215-217.
[2]王斌,彭宗仁.500 kV线路绝缘子电压分布的有限元法计算[J].电瓷避雷器,2003(1):13-15.WANG Bin,PENG Zongren.A finit e element method for the calculation of the volt age di stribut ion along the 500 kVline insulatiors[J].Insulators and Surge Arresters,2003(1):13-15.
[3]胡毅.送电线路绝缘子运行性能及分析[J].高电压技术,2001,27(2):33-35.HU Yi.The analysis of characteristics of porcelain in sulatorglassinsulat or and comp osite insulator in transmissionline[J].High Voltage Engineering,2001,27(2):33-35.
[4]邬雄,万保权,蒋虹.特高压线路绝缘子串的无线电干扰[J].高电压技术,1999,25(2):28-29.WU Xiong,WAN Baoquan,JIANG Hong.Radio interference from insulator-string on UHVlines[J].High Voltag engineering,1999,25(2):28-29.
[5]CIGRE Working Group 22.03.World wideservice expenence with HV composite insulator[J].Electra,1999(191):27-47.
[6]LIANG X D,WANG S W,FAN L,et a1.Devel-opmentof composite insulators in China[J].IEEE Transations on Dielectrics and Electrical Insulation,1999,6(5):586-594.
[7]史鸿威.硅橡胶在电力行业中的应用及前景[J].广州化工,2010,32(1):38-41.SHI Hongwei.Application and prospect of sihconeruber in electrical industry[J].Guangzhou Chemical Industry,2010,32(1):38-41.
[8]范建斌,武雄.Y型绝缘子串交流和直流电压分布特性[J].电网技术,2007,31(14):6-9.FAN Jianbin,WU Xiong.Research on voltage distribufion of Y-type insulator strings under AC and DC condition[J].Power System Technology,2007,31(14):6-9.
[9]江秀臣,徐霖,韩振东.直流绝缘子串电压分布测量方法及其分布特性[J].上海交通大学学报,1999,33(12):1490-1493.JIANG Xiuchen,XU Lin,HAN Zbengdong,Novelmet-hod for measuring voltage distribution of HVDC insulator string and its distribution characteristics[J].Journal of Shanghai Jiaotong University,1999,33(12):1490-1493.
[10]司马文霞,武坤,李立涅,等.±800 kV线路复合绝缘子均压环结构研究[J].高电压技术,2007,33(11):33-36.SIMA Wenxia,WU Kun,LI Licheng,et a1.Optimization of corona ring design for±800 kV UHV DC transmission lines[J].High Voltage Engineering,2007,33(11):33-36.
[11]110-500 kV架空输电线路设计规程:DL/T 5092-1999[S].1999.110-500 k V overhead transmission line design procedures:DL/T 5092-1999[S].1999.
[12]龚文权,钟连宏,李金法.复合绝缘子运行与评价[J].高电压技术,2002,28(5):46-48.GONG Wenquan,ZHONG Lianhong,LI Jinfa.Operation and evaluation of composite insulator[J].High Voltage Enginneering,2002,28(5):46-48.
[13]杨杰,吉晓波,周国华,等.均压装置对复合绝缘子电气性能的影响[J].高电压技术,2004,30(2):24-25.YANG Jie,JI Xiaobo,ZHOU Guohua,et al.The influence of voltagegrading fittings on electrical performance of composite insulators[J].High Voltage Engineering,2004,30(2):24-25
[14]陈树挺,李日隆.复合绝缘子均压环应用研究[J].电瓷避雷器,2004(3):8-10.CHEN Shuting,LI Rilong.Study on appfication of grading ring for composite insulator[J].Insulators and Surge Arresters,2004(3):8-10.
[15]黄玲,文习山,蓝磊,等.基于改进遗传算法的特高压绝缘子均压环优化[J].高电压技术,2009,35(3):218-224.HUANG Ling,WEN Xishan,LAN Lei,et a1.Optimizationof grading tings for UHV composite insulator by the improv edga[J].High Voltage Engineering,2009,35(3):218-224.
[16]钱之银,叶自强,张宇.北兰线500 kV合成绝缘子断串原因试验分析[J].高电压技术,2004,30(6):24-26.QIAN Zhiyin,YE Ziqiang,ZHANG Yu.The test and analysis of reasonof breakdown of Siemens 500 kV composite insulator[J].Hi gh Voltage Engineering,2004,30(6):24-26.
[17]张畅生,王晓刚,黄立虹.500 kV惠汕线合成绝缘子芯棒脆断事故分析[J].电网技术,2002,26(6):71-72.ZHANG Changsheng,WANG Xiaogang,HUANG Lihong.Analysise of composite insulator mandrill breaking on500 kV Huishan line[J].Power System Technology,2002,26(6):71-72.
[18]张鸣,陈勉.500 kV罗北甲线合成绝缘子芯棒脆断原因分析[J].电网技术,2003,27(12):51-53.ZHANG Ming,CHEN Mian.Analysis on core brittle fracture of composite insulators in a certain 500 kV transmission line[J].Power System Technology,2003,27(12):51-53.
[19]孙西昌,彭宗仁,党镇平,等.特高压交流架空线路用复合绝缘子均压特性研究[J].高压电器,2008,44(6):527-530.SUN Xichang,PENG Zongren,DANG Zhengping,et a1.Study on electrical stress grading of composite insulators for UHV transmission lines[J].High Voltage Apparatus,2008,44(6):527-530.
[20]马奎,车俊禄,樊益平,等.加装瓷绝缘子元件对330 kV耐张复合绝缘子串电场的影响分析[J].电瓷避雷器,2013(3):8-14.MA Kui,CHE Junlu,FAN Yiping,et al.Analysis on the impact of the installation of porcelain insulator element330 kV tension composite insulator strings electric field[J].Insulators And Surge Arresters,2013(3):8-14.
[21]江汛,王仲奕.330 kV带均压环的棒形悬式复合绝缘子电场有限元分析[J].高压电器,2004,40(3):215-217.JIAN Xun,WANG Zhongyi.Analysis of the electric field of330 kV composite insulator with grading rings[J].High Voltage Apparatus,2004,40(3):215-217.