盐雾条件下加压方法对绝缘子污秽闪络电压的影响
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摘要
盐雾污秽闪络试验模拟污秽绝缘子在盐雾环境下的闪络,绝缘子周围空间存在大量高导电率雾滴,与蒸汽雾环境有所不同。盐雾环境下,不同加压方式对闪络试验结果的影响与蒸汽雾环境存在一定差别。因此,文中分别采用均匀升压法和恒压升降法对污秽绝缘子在盐雾环境下的污秽闪络进行模拟,得到绝缘子在2种加压方式下变盐密条件下的闪络电压,并比较曲线拟合结果。结果表明:交流人工盐雾污秽闪络试验中,通过均匀升压法得到的闪络电压高于恒压升降法,2种升压方法的闪络电压差值百分比为14%~36%。
The flashover test of salt fog simulate the flashover of polluted insulators in salt fog environment. There are a lot of high conductivity fog droplets near the insulator,the environment is different from the steam fog environment. Under the salt fog environment,the influence of different pressurization methods on flash-over test results is different from that of steam fog. Therefore,this paper adopts rise-voltage method and up-and-down method on flashover of insulators contamination in salt fog environment simulation,obtained flashover voltage under different salt density,and compare the curve fitting results. The experimental results show that the results obtained by the risevoltage method are higher than that of the up-and-down method in the experiment of AC salt fog flash-over test. The flash-over voltage gap between the two methods is in the range of 14% to 36%. The results can be used as reference in artificial salt spray test in different research units.
The flashover test of salt fog simulate the flashover of polluted insulators in salt fog environment. There are a lot of high conductivity fog droplets near the insulator,the environment is different from the steam fog environment. Under the salt fog environment,the influence of different pressurization methods on flash-over test results is different from that of steam fog. Therefore,this paper adopts rise-voltage method and up-and-down method on flashover of insulators contamination in salt fog environment simulation,obtained flashover voltage under different salt density,and compare the curve fitting results. The experimental results show that the results obtained by the risevoltage method are higher than that of the up-and-down method in the experiment of AC salt fog flash-over test. The flash-over voltage gap between the two methods is in the range of 14% to 36%. The results can be used as reference in artificial salt spray test in different research units.
引文
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[19]关志成,牛康,彭功茂,等.硅藻土特性对复合绝缘子人工污秽试验的影响[J].高电压技术,2012,38(9):2383-2388.GUAN Zhicheng,NIU Kang,PENG Gongmao,et al.Effect of diatomite on artificial pollution test of composite insulators[J].High Voltage Engineering,2012,38(9):2383-2388.
[20]王绥瑜,宋思齐,陈钦柱,等.海盐污秽下悬式绝缘子闪络电压特性试验[J].广东电力,2015,28(4):95-97.WANG Suiyu,SONG Siqi,CHEN Qinzhu,et al.Suspended voltage type sea salt pollution flashover test[J].Guangdong Electric Power,2015,28(4):95-97.
[2]王彬,梁曦东,张轶博,等.交、直流电压下复合绝缘子和瓷绝缘子的自然积污试验[J].高电压技术,2009,35(9):2322-2328.WANG Bin,LIANG Xidong,ZHANG Yibo,et al.Natural contamination test of composite insulators and porcelain insulators under AC and DC voltage[J].High Voltage Engineering,2009,35(9):2322-2328.
[3]李震宇,梁曦东,王彬,等.直流电压下复合绝缘子的自然积污试验[J].电网技术,2007,31(14):10-14.LI Zhenyu,LIANG Xidong,WANG Bin,et al.Natural pollution test of composite insulators under DC voltage[J].Power System Technology,2007,31(14):10-14.
[4]李鑫.污秽成分对绝缘子交流闪络特性的影响研究[D].重庆:重庆大学,2015.LI Xin.Study on the influence of contamination composition on AC flashover performance of insulators[D].Chongqing:Chongqing University,2015.
[5]张楚岩,张福增,李锐海,等.绝缘子人工污秽试验加压方式的比较[J].高电压技术,2013,39(1):44-53.ZHANG Chuyan,ZHANG Fuzeng,LI Ruihai,et al.Comparison of the pressurization methods for artificial pollution test of insulators[J].High Voltage Engineering,2013,39(1):44-53.
[6]张小福.工频电压对污秽玻璃绝缘子冲击闪络特性影响的研究[D].武汉:华中科技大学,2013.ZHANG Xiaofu.Study on the effect of power frequency voltage on the flashover characteristics of polluted glass insulators[D].Wuhan:Huazhong University of Science and Technology,2013.
[7]罗明武,肖代波.复合绝缘子人工污秽试验方法研究综述[J].高压电器,2012,48(10):120-125.LUO Mingwu,XIAO Daibo.A review of artificial pollution test methods of composite insulator[J].High Voltage Apparatus,2012,48(10):120-125.
[8]蒋兴良,肖代波,胡建林,等.试验方法对复合绝缘子污秽闪络特性的影响[J].高压电器,2010,46(2):8-11.JIANG Xingliang,XIAO Daibo,HU Jianlin,et al.The influence of test methods on the flashover characteristics of composite insulators[J].High Voltage Apparatus,2010,46(2):8-11.
[9]张鑫.悬式绝缘子交、直流污秽试验方法比较[D].重庆:重庆大学,2009.ZHANG Xin.Comparison of AC and DC Pollution test methods for suspended insulators[D].Chongqing:Chongqing University,2009.
[10]肖代波.复合绝缘子人工污秽试验方法[D].重庆:重庆大学,2009.XIAO Daibo.Artificial pollution test methods of composite insulator[D].Chongqing:Chongqing University,2009.
[11]王向朋,周军,王黎明,等.高海拔下特高压直流绝缘子的污闪特性[J].高电压技术,2008,34(9):1869-1874.WANG Xiangpeng,ZHOU Jun,WANG Liming,et al.Flashover performance of UHV DC insulators at high altitude[J].High Voltage Engineering,2008,34(9):1869-1874.
[12]SULAIMAN A E,QURESHI M I.Effect of contamination on the leakage current of inland desert insulators[J].IEEETransactions on Electrical Insulation,1984,19(4):332-339.
[13]蒋兴良,周龙武,胡建林,等.强暴雨下瓷、玻璃绝缘子串交流闪络特性研究[J].高压电器,2014,50(7):1-7.JIANG Xingliang,ZHOU Longwu,HU Jianlin,et al.Study on AC flashover characteristics of porcelain and glass insulator strings under heavy rain[J].High Voltage Apparatus,2014,50(7):1-7.
[14]蒋兴良,赵世华,毕茂强,等.污秽绝缘子闪络特性与泄漏电流特性研究[J].中国电机工程学报,2013,33(31):220-226.JIANG Xingliang,ZHAO Shihua,BI Maoqiang,et al.Flashover characteristics and leakage current characteristics of polluted insulators[J].Proceedings of the CSEE,2013,33(13):220-226.
[15]吴光亚,王绍武,蔡炜,等.1 000 kV交流线路长串绝缘子污秽特性的研究[J].高电压技术,2006,32(12):20-25.WU Guangya,WANG Shaowu,CAI Wei,et al.Study on the pollution characteristics of long insulator strings in AC 1 000 kVline[J].High Voltage Engineering,2006,32(12):20-25.
[16]张志劲,蒋兴良,孙才新,等.两种不同染污方式下绝缘子交流闪络特性的比较[J].中国电机工程学报,2006,26(8):124-127.ZHANG Zhijin,JIANG Xingliang,SUN Caixin,et al.Comparison of AC flashover performance of insulators under two different polluting manners[J].Proceedings of the CSEE,2006,26(8):124-127.
[17]何正浩,王昱晴,宋思齐,等.盐密与盐度对不同型式绝缘子串交流人工污秽闪络特性的影响[J].高电压技术,2016,42(12):3810-3815.HE Zhenghao,WANG Yuqing,SONG Siqi,et al.Effects of salt density and salinity on flashover characteristics of ACinsulators in different types of insulator strings[J].High Voltage Engineering,2016,42(12):3810-3815.
[18]王绥瑜,罗亚运,陈钦柱,等.盐雾下涂污绝缘子交流闪20络特性[J].云南电力技术,2015,43(3):56-59.WANG Suiyu,LUO Yayun,CHEN Qinzhu,et al.AC flashover performance of insulators bedaub salt spray[J].Yunnan Electric Power Technology,2015,43(3):56-59.
[19]关志成,牛康,彭功茂,等.硅藻土特性对复合绝缘子人工污秽试验的影响[J].高电压技术,2012,38(9):2383-2388.GUAN Zhicheng,NIU Kang,PENG Gongmao,et al.Effect of diatomite on artificial pollution test of composite insulators[J].High Voltage Engineering,2012,38(9):2383-2388.
[20]王绥瑜,宋思齐,陈钦柱,等.海盐污秽下悬式绝缘子闪络电压特性试验[J].广东电力,2015,28(4):95-97.WANG Suiyu,SONG Siqi,CHEN Qinzhu,et al.Suspended voltage type sea salt pollution flashover test[J].Guangdong Electric Power,2015,28(4):95-97.