倒T型布置绝缘子串污秽闪络特性
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摘要
合理的绝缘子串布置方式是提高污秽闪络电压的有效方法之一,目前国内外对于绝缘子串布置方式的研究主要集中在V型串和倒V型串,对于倒T型布置的绝缘子串闪络特性缺乏基础试验研究。为此,以XWP–70等3种绝缘子为试品,采用均匀升压法展开试验研究并与普通悬垂串进行对比。研究表明:倒T型布置绝缘子串的闪络电压(Uf)与附盐密度(ρESDD)满足幂函数关系;倒T型布置的绝缘子串闪络电压相较于普通悬垂串提高11.6%～22.3%,而且随着附盐密度的增加,闪络电压提高百分比也随之增加。根据实验结果,计算出倒T型绝缘子串在各个污区的串型等效系数,方便倒T型绝缘子串串长的选择。
Reasonable insulator string arrangement is one of the effective ways to improve the pollution flashover voltage.At present, most of the existing references of the forms of insulator strings are mainly related to insulator string arranged in V-type and inverted V-type, but rarely related to insulator string arranged in inverted T-type. We adopted a uniform increase voltage method to test XWP-70 and other two inverted V-type insulator strings and compared with the ordinary hanging string. Through the experiments, it can be found that the flashover voltage of the inverted T-type insulator string has a power function relation to ESDD. Compared with the ordinary hanging string, the inverted T-type insulator string flashover voltage increases by 11.6%～22.3%; and with the increase in salt density, the percentage of flashover voltage improvement also increases. According to the results, the equivalent coefficient of the inverted T-type insulator string in each pollution area is calculated, and it will be convenient to select the inverted T-type insulator string's length.
Reasonable insulator string arrangement is one of the effective ways to improve the pollution flashover voltage.At present, most of the existing references of the forms of insulator strings are mainly related to insulator string arranged in V-type and inverted V-type, but rarely related to insulator string arranged in inverted T-type. We adopted a uniform increase voltage method to test XWP-70 and other two inverted V-type insulator strings and compared with the ordinary hanging string. Through the experiments, it can be found that the flashover voltage of the inverted T-type insulator string has a power function relation to ESDD. Compared with the ordinary hanging string, the inverted T-type insulator string flashover voltage increases by 11.6%～22.3%; and with the increase in salt density, the percentage of flashover voltage improvement also increases. According to the results, the equivalent coefficient of the inverted T-type insulator string in each pollution area is calculated, and it will be convenient to select the inverted T-type insulator string's length.
引文
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[8]黄道春,熊紫腾,张虎,等.污秽中Ca SO4对典型瓷、复合绝缘子交流污闪特性影响对比分析[J].高电压技术,2017,43(11):3698-3704.HUANG Daochun, XIONG Ziteng, ZHANG Hu, et al. ComparativeanalysisoftheeffectofCa SO4incontaminationonACpollutionflashover characteristics of typical porcelain insulator and compositeinsulator[J]. High Voltage Engineering, 2017, 43(11):3698-3704.
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[11]李震宇,崔吉峰,周远翔,等.绝缘子安装结构对污闪电压的影响[J].电网技术,2005,29(16):52-55,80.LI Zhengyu, CUI Jifeng, ZHOU Yuanxiang, et al. Influence of insula-torinstallationformonitspollutionflashovervoltage[J].PowerSystem Technology, 2005, 29(16):52-55, 80.
[12]郝艳捧,黎卫国,阳林,等.高海拔地区直流耐张绝缘子布置方式对其污闪特性的影响[J].高电压技术,2011,37(1):34-39.HAO Yanpeng, LI Weiguo, YANG Lin, et al. Influence of tension ar-rangemodeonartificialpollutionflashoverperformanceofDCinsulatorstringsathighaltitudearea[J].HighVoltageEngineering,2011, 37(1):34-39.
[13]范建斌,黄志秋,谢荣坤,等.直流输电线路Y型绝缘子串污闪特性研究[J].电网技术,2007,31(18):28-32.FAN Jianbin, HUANG Zhiqiu, XIE Rongkun, et al. Research on pol-lutionflashoverperformanceofY-typeofinsulatorstringsusedinHVDC transmission line[J]. Power System Technology, 2007, 31(18):28-32.
[14]LIAO J, PENG Z, WANG Q. Potential distribution analysis of Y-typeinsulatorsinUHV1000kVdoublecircuittransmissionlines[C]∥PropertiesandApplicationsofDielectricMaterials.[S.l.]:IEEE,2015:576-579.
[15]SUNDARARAJANR,GORURRS.EffectofinsulatorprofilesonDC flashover voltage under polluted conditions. a study using a dy-namicarcmodel[J].IEEETransactionsonDielectrics&ElectricalInsulation, 1994, 12(1):124-132.
[16]蒋兴良,舒立春,张永记,等.人工污秽下盐/灰密对普通悬式绝缘子串交流闪络特性的影响[J].中国电机工程学报,2006,26(15):24-28.JIANGXingling,SHULichun,ZHANGYongji,etal.InfluenceofESDD and NSDD on AC flashover characteristic of artificially pollut-edXP-160insulators[J].ProceedingsoftheCSEE,2006,26(15):24-28.
[17]黄青丹,张东东,宋浩永,等.硝酸盐污秽作用下绝缘子的交流闪络特性[J].高电压技术,2017,43(12):3922-3928.HUANGQingdan,ZHANGDongdong,SONGHaoyong,etal.ACflashover performance of insulators polluted by nitrates[J]. High Volt-age Engineering, 2017,43(12):3922-3928.
[18]ZHOUJG,DONGG,IMAKOMAT,etal.Contaminationperfor-manceof outer-ribtype suspension insulators[C]∥Transmission andDistributionConferenceandExhibition2002:AsiaPacific.[S.l.]:IEEE, 2002:2185-2190.
[19]JIANG X, YUAN J, ZHANG Z, et al. Study on AC artificial contami-natedflashoverperformanceofvarioustypesofinsulators[J].IEEETransactions on Power Delivery, 2007, 22(4):2567-2574.
[2]蒋兴良,叶汉欣,张志劲,等.自然污秽成分NaNO3和NaCl对复合绝缘子闪络特性的影响比较[J].高电压技术,2015,41(9):3029-3035.JIANG Xingliang, YE Hanxin, ZHANG Zhijin, et al. Comparison oninfluence of natural contaminant NaNO3 and NaCl on flashover char-acteristics of composite insulator[J]. High Voltage Engineering, 2015,41(9):3029-3035.
[3]赵晨龙,梅红伟,戴罕奇,等.自然污秽与人工污秽绝缘子等价性分析方法研究[J].中国电机工程学报,2014,34(6):955-964.ZHAO Chenlong, MEI Hongwei, DAI Hanqi, et al. Research on anal-ysismethodofequivalencebetweennaturalpollutedinsulatorsandartificial contaminated insulators[J]. Proceedings of the CSEE, 2014,34(6):955-964.
[4]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3pH流8oEs1 i人0tZ-h3工ed8ne1ng5sh.iatyo,aWnAd NsGalYiniiqtiyng,Sn[OJ].NAGCS iaqrtii,fiect iaall.Ip,noflll2uu0et1ino6cne,of4fl 2as(sa1hlt2o)vdee:r-performances of various types insulators[J]. High Voltage Engineering,2016, 42(12):3810-3815.
[5]艾建勇,金立军.基于紫外图像的接触网棒瓷绝缘子污秽状态检测[J].电工技术学报,2016,31(10):112-118.AI Jianyong, JIN Lijun. Rod porcelain insulator filth state detection ofcatenary based on ultraviolet image[J]. Transactions of China Electro-technical Society, 2016, 31(10):112-118.
[6]张志劲,蒋兴良,孙才新.污秽绝缘子闪络特性研究现状及展望[J].电网技术,2006,30(2):35-40.ZHANG Zhijin, JIANG Xingliang, SUN Caixin. Present situation andprospectofresearchonflashovercharacteristicsofpollutedinsula-tors[J]. Power System Technology, 2006, 30(2):35-40.
[7]张燕,苏建军,刘辉,等.直流线路绝缘子自然积污污秽颗粒粒径分布特征[J].高电压技术,2017,43(9):2935-2942.ZHANGYan,SUJianjun,LIUHui,etal.ParticlesizedistributioncharacteristicsofnaturallypollutedinsulatorsinserviceofHVDCtransmissionline[J].HighVoltageEngineering,2017,43(9):2935-2942.
[8]黄道春,熊紫腾,张虎,等.污秽中Ca SO4对典型瓷、复合绝缘子交流污闪特性影响对比分析[J].高电压技术,2017,43(11):3698-3704.HUANG Daochun, XIONG Ziteng, ZHANG Hu, et al. ComparativeanalysisoftheeffectofCa SO4incontaminationonACpollutionflashover characteristics of typical porcelain insulator and compositeinsulator[J]. High Voltage Engineering, 2017, 43(11):3698-3704.
[9]蒋兴良,张志劲,胡建林,等.高海拔下不同伞形结构750kV合成绝缘子短样交流污秽闪络特性及其比较[J].中国电机工程学报,2005,25(12):159-164.JIANGXingliang,ZHANGZhijin,HUJianlin,etal.ACPollutionflashoverperformanceandcomparisonofshortsamplesof750kVcompositeinsulatorswith differentconfigurationin high altitudear-ea[J]. Proceedings of the CSEE, 2005, 25(12):159-164.
[10]胡建林,蒋兴良,张志劲,等.布置方式对直流绝缘子串人工污秽闪络特性的影响[J].电网技术,2006,30(23):11-14,20.HU Jianlin, JIANG Xingliang, ZHANG Zhijin, et al. Influence of sus-pensionmodeonartificialpollutionflashoverperformanceofDCinsulatorstrings[J].PowerSystemTechnology,2006, 30(23):11-14,20.
[11]李震宇,崔吉峰,周远翔,等.绝缘子安装结构对污闪电压的影响[J].电网技术,2005,29(16):52-55,80.LI Zhengyu, CUI Jifeng, ZHOU Yuanxiang, et al. Influence of insula-torinstallationformonitspollutionflashovervoltage[J].PowerSystem Technology, 2005, 29(16):52-55, 80.
[12]郝艳捧,黎卫国,阳林,等.高海拔地区直流耐张绝缘子布置方式对其污闪特性的影响[J].高电压技术,2011,37(1):34-39.HAO Yanpeng, LI Weiguo, YANG Lin, et al. Influence of tension ar-rangemodeonartificialpollutionflashoverperformanceofDCinsulatorstringsathighaltitudearea[J].HighVoltageEngineering,2011, 37(1):34-39.
[13]范建斌,黄志秋,谢荣坤,等.直流输电线路Y型绝缘子串污闪特性研究[J].电网技术,2007,31(18):28-32.FAN Jianbin, HUANG Zhiqiu, XIE Rongkun, et al. Research on pol-lutionflashoverperformanceofY-typeofinsulatorstringsusedinHVDC transmission line[J]. Power System Technology, 2007, 31(18):28-32.
[14]LIAO J, PENG Z, WANG Q. Potential distribution analysis of Y-typeinsulatorsinUHV1000kVdoublecircuittransmissionlines[C]∥PropertiesandApplicationsofDielectricMaterials.[S.l.]:IEEE,2015:576-579.
[15]SUNDARARAJANR,GORURRS.EffectofinsulatorprofilesonDC flashover voltage under polluted conditions. a study using a dy-namicarcmodel[J].IEEETransactionsonDielectrics&ElectricalInsulation, 1994, 12(1):124-132.
[16]蒋兴良,舒立春,张永记,等.人工污秽下盐/灰密对普通悬式绝缘子串交流闪络特性的影响[J].中国电机工程学报,2006,26(15):24-28.JIANGXingling,SHULichun,ZHANGYongji,etal.InfluenceofESDD and NSDD on AC flashover characteristic of artificially pollut-edXP-160insulators[J].ProceedingsoftheCSEE,2006,26(15):24-28.
[17]黄青丹,张东东,宋浩永,等.硝酸盐污秽作用下绝缘子的交流闪络特性[J].高电压技术,2017,43(12):3922-3928.HUANGQingdan,ZHANGDongdong,SONGHaoyong,etal.ACflashover performance of insulators polluted by nitrates[J]. High Volt-age Engineering, 2017,43(12):3922-3928.
[18]ZHOUJG,DONGG,IMAKOMAT,etal.Contaminationperfor-manceof outer-ribtype suspension insulators[C]∥Transmission andDistributionConferenceandExhibition2002:AsiaPacific.[S.l.]:IEEE, 2002:2185-2190.
[19]JIANG X, YUAN J, ZHANG Z, et al. Study on AC artificial contami-natedflashoverperformanceofvarioustypesofinsulators[J].IEEETransactions on Power Delivery, 2007, 22(4):2567-2574.