温差对绝缘子污层受潮过程的影响
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摘要
为了具体研究温差对污层受潮程度的影响,以实现更准确的状态评估与闪络预警,论文开展了一系列相关的试验。首先通过预试验确定了能良好展现影响结果的各项试验方法与条件;然后通过玻璃平板的污秽受潮试验,研究了温差在不同环境湿度下对污层受潮过程的影响;最后从污层吸水量变化的角度分析,拟合得到了在可溶盐污秽成分为NaCl时,表面电导率最大值与温差和湿度之间的关系式。结果表明:温差的存在会对受潮程度产生影响,且影响程度与温差大小和环境湿度有关。研究表明根据当前环境条件与表面电导率值,可以得到绝缘子表面真实的污秽状态,从而为后续的状态评估与闪络预警提供基础。
In order to research the effect of temperature difference on pollution layer wetting, and make the condition assessment and flashover alarming more accurate, a series of experiments were conducted in this paper. The method and condition of the experiment were confirmed to well affect the results by pretests. By doing pollution layer wetting tests on plate glass, the impact of temperature difference on wetting process under different humidity was researched. Moreover, from the angle of analyzing the changes in absorption in the pollution layer, the relation among the maximum of surface conductivity with temperature difference and humidity was fitted, when the component of soluble pollution is NaCl. Experimental results suggest that the effect really exists, and its level is related to the specific values of temperature difference and the humidity. According to the environment condition and the surface conductivity, the real contamination status of insulator can be known, which provides the basis for further condition assessment and flashover alarming.
In order to research the effect of temperature difference on pollution layer wetting, and make the condition assessment and flashover alarming more accurate, a series of experiments were conducted in this paper. The method and condition of the experiment were confirmed to well affect the results by pretests. By doing pollution layer wetting tests on plate glass, the impact of temperature difference on wetting process under different humidity was researched. Moreover, from the angle of analyzing the changes in absorption in the pollution layer, the relation among the maximum of surface conductivity with temperature difference and humidity was fitted, when the component of soluble pollution is NaCl. Experimental results suggest that the effect really exists, and its level is related to the specific values of temperature difference and the humidity. According to the environment condition and the surface conductivity, the real contamination status of insulator can be known, which provides the basis for further condition assessment and flashover alarming.
引文
[1]唐铭骏,杨帅,杨翠茹,等.不溶物吸湿性对绝缘子泄漏电流的影响[J].高电压技术,2017,43(12):3964-3972.TANG Mingjun,YANG Shuai,YANG Cuiru,et al.Influence of insoluble substance hygroscopicity on insulator leakage current[J].High Voltage Engineering,2017,43(12):3964-3972.
[2]毛颖科.基于泄漏电流的电力系统外绝缘监测和评估方法[D].北京:清华大学,2008.MAO Yingke.Monitoring and assessment of pollution levels of external insulation by leakage current[D].Beijing,China:Tsinghua University,2008.
[3]梅红伟,毛颖科,卞星明,等.相对湿度对绝缘子泄漏电流最大值的影响[J].高电压技术,2010,36(3):627-631.MEI Hongwei,MAO Yingke,BIAN Xingming,et al.Effect of relative humidity on the maximum leakage current of insulators[J].High Voltage Engineering,2010,36(3):627-631.
[4]张福增,彭功茂,王黎明,等.环境温度对复合绝缘子直流污闪特性的影响[J].高电压技术,2010,36(5):1119-1123.ZHANG Fuzeng,PENG Gongmao,WANG Liming,et al.Influence of environmental temperature on flashover voltage of composite insulator[J].High Voltage Engineering,2010,36(5):1119-1123.
[5]梅红伟,赵晨龙,戴罕奇,等.染污瓷和玻璃绝缘子的湿润特性研究[J].中国电机工程学报,2014,34(9):1471-1480.MEI Hongwei,ZHAO Chenlong,DAI Hanqi,et al.Wetting characteristics of contaminated porcelain and glass insulators[J].Proceedings of the CSEE,2014,34(9):1471-1480.
[6]赵新德.人工污秽绝缘子泄漏电流、湿度、盐密关系及对比研究[D].长沙:长沙理工大学,2008.ZHAO Xinde.Research on correlation among equivalent salt deposit density,relative humidity and leakage current in artificially polluted insulators[D].Changsha,China:Changsha University of Science&Technology,2008.
[7]杨洋,张淑国,尉冰娟,等.基于泄漏电流的绝缘子污秽状态预警方法的研究[J].高压电器,2016,52(11):130-136.YANG Yang,ZHANG Shuguo,WEI Bingjuan,et al.Warning method of insulator contamination based on leakage current[J].High Voltage Apparatus,2016,52(11):130-136.
[8]刘琴,万小东,徐涛,等.长串绝缘子高海拔人工污秽试验泄漏电流分析[J].高电压技术,2016,42(12):3797-3802.LIU Qin,WAN Xiaodong,XU Tao,et al.Leakage current analysis of long string insulators under high-altitude artificial pollution tests[J].High Voltage Engineering,2016,42(12):3797-3802.
[9]关志成,刘瑛岩,周远翔,等.绝缘子及输变电设备外绝缘[M].北京:清华大学出版社,2006.GUAN Zhicheng,LIU Yingyan,ZHOU Yuanxiang,et al.Insulation of insulators and power transmission equipment[M].Beijing,China:Tsinghua University Press,2006.
[10]蒋兴良,石岩,黄欢,等.污秽绝缘子泄漏电流频率和相位特征的试验研究[J].中国电机工程学报,2010,30(7):118-124.JIANG Xingliang,SHI Yan,HUANG Huan,et al.Experimental research on the frequency and phase characteristics of leakage current of artificially polluted insulators[J].Proceedings of the CSEE,2010,30(7):118-124
[11]秦莉娟.基于绝缘子泄漏电流的污闪预测方法研究[D].成都:西南交通大学,2016.QIN Lijuan.Research on the prediction method of flashover based on leakage current of polluted insulators[D].Chengdu,China:Southwest Jiaotong University,2016.
[12]CHRZAN K L.Leakage current on naturally contaminated porcelain and silicone insulators[J].IEEE Transactions on Power Delivery,2010,25(2):904-910.
[13]KUNAGAI S.Leakage current characterization for estimating the conditions of ceramic and polymeric insulating surfaces[J].IEEETransactions on Dielectrics and Electrical Insulation,2004,11(4):681-690.
[14]LI J Y,SUN C X,SIMA W X,et al.Contamination level prediction of insulators based on the characteristics of leakage current[J].IEEETransactions on Power Delicery,2010,25(1):417-424.
[15]宋云海.基于表面电导的绝缘子积污在线监测系统[D].广州:华南理工大学,2011.SONGYunhai.The study base on the insulator pollution deposit on-line monitoring of surface conductance[D].Guangzhou,China:South China University of Technology,2011.
[16]连之伟,张寅平,陈宝明.热质交换原理与设备[M].北京:中国建筑工业出版社,2011.LIAN Zhiwei,ZHANG Yinping,CHEN Baoming.Principles and equipment of heat and mass transfer[M].Beijing,China:China Architecture&Building Press,2011.
[17]戴罕奇,梅红伟,周志成,等.绝缘子污层受潮过程中湿度和温差的作用[J].高电压技术,2012,38(10):2623-2632.DAI Hanqi,MEI Hongwei,ZHOU Zhicheng,et al.Roles of humidity and temperature difference in pollution layer wetting of insulators[J].High Voltage Engineering,2012,38(10):2623-2632.
[18]张志富,希爽.关于露点温度计算的探讨[J].干旱区研究,2011,28(2):275-281.ZHANG Zhifu,XI Shuang.Study on calculation of dew-point temperature[J].Arid Zone Research,2011,28(2):275-281.
[19]许建照,赵莉,丰爱国.湿度、露点和干燥度[J].电子机械工程,2009,25(5):25-27,52.XU Jianzhao,ZHAO Li,FENG Aiguo.Humidity,dew point and dryness[J].Electro-Mechanical Engineering,2009,25(5):25-27,52.
[20]赵晨龙.表面电导率污秽度评估方法及其应用研究[D].北京:清华大学,2014.ZHAO Chenlong.Research on surface conductivity contamination evaluation method and its application[D].Beijing,China:Tsinghua University,2014.
[21]唐攀龙.高压输电线路绝缘子红外监测方法的研究[D].长沙:长沙理工大学,2009.TANG Panlong.Infrared supervision for insulators of uhv transmission line[D].Changsha,China:Changsha University of Science&Technology,2009.
[2]毛颖科.基于泄漏电流的电力系统外绝缘监测和评估方法[D].北京:清华大学,2008.MAO Yingke.Monitoring and assessment of pollution levels of external insulation by leakage current[D].Beijing,China:Tsinghua University,2008.
[3]梅红伟,毛颖科,卞星明,等.相对湿度对绝缘子泄漏电流最大值的影响[J].高电压技术,2010,36(3):627-631.MEI Hongwei,MAO Yingke,BIAN Xingming,et al.Effect of relative humidity on the maximum leakage current of insulators[J].High Voltage Engineering,2010,36(3):627-631.
[4]张福增,彭功茂,王黎明,等.环境温度对复合绝缘子直流污闪特性的影响[J].高电压技术,2010,36(5):1119-1123.ZHANG Fuzeng,PENG Gongmao,WANG Liming,et al.Influence of environmental temperature on flashover voltage of composite insulator[J].High Voltage Engineering,2010,36(5):1119-1123.
[5]梅红伟,赵晨龙,戴罕奇,等.染污瓷和玻璃绝缘子的湿润特性研究[J].中国电机工程学报,2014,34(9):1471-1480.MEI Hongwei,ZHAO Chenlong,DAI Hanqi,et al.Wetting characteristics of contaminated porcelain and glass insulators[J].Proceedings of the CSEE,2014,34(9):1471-1480.
[6]赵新德.人工污秽绝缘子泄漏电流、湿度、盐密关系及对比研究[D].长沙:长沙理工大学,2008.ZHAO Xinde.Research on correlation among equivalent salt deposit density,relative humidity and leakage current in artificially polluted insulators[D].Changsha,China:Changsha University of Science&Technology,2008.
[7]杨洋,张淑国,尉冰娟,等.基于泄漏电流的绝缘子污秽状态预警方法的研究[J].高压电器,2016,52(11):130-136.YANG Yang,ZHANG Shuguo,WEI Bingjuan,et al.Warning method of insulator contamination based on leakage current[J].High Voltage Apparatus,2016,52(11):130-136.
[8]刘琴,万小东,徐涛,等.长串绝缘子高海拔人工污秽试验泄漏电流分析[J].高电压技术,2016,42(12):3797-3802.LIU Qin,WAN Xiaodong,XU Tao,et al.Leakage current analysis of long string insulators under high-altitude artificial pollution tests[J].High Voltage Engineering,2016,42(12):3797-3802.
[9]关志成,刘瑛岩,周远翔,等.绝缘子及输变电设备外绝缘[M].北京:清华大学出版社,2006.GUAN Zhicheng,LIU Yingyan,ZHOU Yuanxiang,et al.Insulation of insulators and power transmission equipment[M].Beijing,China:Tsinghua University Press,2006.
[10]蒋兴良,石岩,黄欢,等.污秽绝缘子泄漏电流频率和相位特征的试验研究[J].中国电机工程学报,2010,30(7):118-124.JIANG Xingliang,SHI Yan,HUANG Huan,et al.Experimental research on the frequency and phase characteristics of leakage current of artificially polluted insulators[J].Proceedings of the CSEE,2010,30(7):118-124
[11]秦莉娟.基于绝缘子泄漏电流的污闪预测方法研究[D].成都:西南交通大学,2016.QIN Lijuan.Research on the prediction method of flashover based on leakage current of polluted insulators[D].Chengdu,China:Southwest Jiaotong University,2016.
[12]CHRZAN K L.Leakage current on naturally contaminated porcelain and silicone insulators[J].IEEE Transactions on Power Delivery,2010,25(2):904-910.
[13]KUNAGAI S.Leakage current characterization for estimating the conditions of ceramic and polymeric insulating surfaces[J].IEEETransactions on Dielectrics and Electrical Insulation,2004,11(4):681-690.
[14]LI J Y,SUN C X,SIMA W X,et al.Contamination level prediction of insulators based on the characteristics of leakage current[J].IEEETransactions on Power Delicery,2010,25(1):417-424.
[15]宋云海.基于表面电导的绝缘子积污在线监测系统[D].广州:华南理工大学,2011.SONGYunhai.The study base on the insulator pollution deposit on-line monitoring of surface conductance[D].Guangzhou,China:South China University of Technology,2011.
[16]连之伟,张寅平,陈宝明.热质交换原理与设备[M].北京:中国建筑工业出版社,2011.LIAN Zhiwei,ZHANG Yinping,CHEN Baoming.Principles and equipment of heat and mass transfer[M].Beijing,China:China Architecture&Building Press,2011.
[17]戴罕奇,梅红伟,周志成,等.绝缘子污层受潮过程中湿度和温差的作用[J].高电压技术,2012,38(10):2623-2632.DAI Hanqi,MEI Hongwei,ZHOU Zhicheng,et al.Roles of humidity and temperature difference in pollution layer wetting of insulators[J].High Voltage Engineering,2012,38(10):2623-2632.
[18]张志富,希爽.关于露点温度计算的探讨[J].干旱区研究,2011,28(2):275-281.ZHANG Zhifu,XI Shuang.Study on calculation of dew-point temperature[J].Arid Zone Research,2011,28(2):275-281.
[19]许建照,赵莉,丰爱国.湿度、露点和干燥度[J].电子机械工程,2009,25(5):25-27,52.XU Jianzhao,ZHAO Li,FENG Aiguo.Humidity,dew point and dryness[J].Electro-Mechanical Engineering,2009,25(5):25-27,52.
[20]赵晨龙.表面电导率污秽度评估方法及其应用研究[D].北京:清华大学,2014.ZHAO Chenlong.Research on surface conductivity contamination evaluation method and its application[D].Beijing,China:Tsinghua University,2014.
[21]唐攀龙.高压输电线路绝缘子红外监测方法的研究[D].长沙:长沙理工大学,2009.TANG Panlong.Infrared supervision for insulators of uhv transmission line[D].Changsha,China:Changsha University of Science&Technology,2009.