应用硅橡胶材料附件提高瓷支柱绝缘子外绝缘强度的实验研究
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摘要
为了提高支柱绝缘子的外绝缘强度,根据电场分布理论、气体放电理论和沿面放电理论,提出了应用硅橡胶材料附件系统来控制绝缘子外部放电的发生和发展,从而达到提高支柱绝缘子外绝缘强度的目的。以110 kV瓷支柱绝缘子为例,进行了工频干闪电压、湿闪电压和污秽闪络电压的试验。试验结果表明,在没有改变支柱绝缘子的电气距离和结构参数的情况下,应用附件系统将工频干闪电压提高5. 9%,工频湿闪电压提高12. 37%,污秽闪络电压提高22. 06%。研究结果对提高支柱绝缘子的外绝缘有一定的指导意义。
In order to improve external insulation strength of post insulators,according to electric field distribution theory,gas discharge theory and surface discharge theory,the application of silicone rubber material accessories system is put forward to control occurrence and development of external discharges of insulators so as to achieve the purpose of enhancing external insulation strength of post insulators. Taking the 110 kV porcelain post insulator as an example,power frequency dry flashover tests and wet flashover voltage tests as well as pollution flashover voltage tests have been carried out. Experimental results show that applied accessories system raise power frequency dry flashover voltage by 5. 9%,wet flashover voltage by 12. 37% and pollution flashover voltage by 22. 06%,respectively,without altering electrical distance and structural parameters of post insulators. The finding shave some instructive significance as far as improving external insulation of post insulators.
In order to improve external insulation strength of post insulators,according to electric field distribution theory,gas discharge theory and surface discharge theory,the application of silicone rubber material accessories system is put forward to control occurrence and development of external discharges of insulators so as to achieve the purpose of enhancing external insulation strength of post insulators. Taking the 110 kV porcelain post insulator as an example,power frequency dry flashover tests and wet flashover voltage tests as well as pollution flashover voltage tests have been carried out. Experimental results show that applied accessories system raise power frequency dry flashover voltage by 5. 9%,wet flashover voltage by 12. 37% and pollution flashover voltage by 22. 06%,respectively,without altering electrical distance and structural parameters of post insulators. The finding shave some instructive significance as far as improving external insulation of post insulators.
引文
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[11]房柯夫,吴光亚,危鹏. 1 000 k V交流输电线路污秽外绝缘设计方法的研究[J].电瓷避雷器,2007(3):1-4.FANGKefu,WUGuangya,WEI Peng. Research of pollution insulation design method for 1 000 k V AC transmission line[J]. Insulator and Surge Arresters,2007(3):1-4.
[12]吴光亚.我国绝缘子的发展现状及应考虑的问题[J].电瓷避雷器,2010(2):7-11.WUGuangya. Development of China’s insulator and the issue should be considered[J]. Insulator and Surge Arresters,2012(2):7-11.
[13]张德赛.一种能提高外绝缘电气强度的绝缘子:中国,ZL200810197722. 5[P]. 2009-04-15.
[14] ZHANG D S. The New Method of Improving External Insulation Strength of HV Equipment[C]//INMR World Congress on Insulators,Arresters,Bushings and Cable Accessories,Crete,Greece. 2009:10-13.
[15] ZHANGD S. What is the Next Step to Insulator in the Future[C]//INMR World Congress on Insulators,Arresters,Bushings and Cable Accessories,Seoul,Korea,April 17-20,2011.
[16]熊刚,张德赛,余长国.应用屏障装置提高复合线路绝缘子的外绝缘性能[J].电瓷避雷器,2012(5):5-8.XIONG Gang,ZHANG Desai,YUChangguo. Improvement of external insulation properties of the composite line insulator with barrier device[J]. Insulator and Surge Arresters,2012(5):5-8.
[17]阳少军,张德赛,杨龙,等.应用附件系统提高复合支柱绝缘子的干闪络电压[J].电瓷避雷器,2013(2):1-4.YANGShaojun,ZHANG Desai,YANG LONG,et al.Improvement of the dry flashover voltage of composite post insulator with accessories system[J]. Insulator and Surge Arresters,2013(2):1-4.
[2]徐志钮,律方成,李和明,等. RTV和增爬裙对支柱绝缘子电场和电位分布影响的研究[J].华北电力大学学报,2010,37(4):1-6.XUZhiniu,LV Fangcheng,LI Heming,et al. Influence of RTV and booster shed on electric field and potential distribution of post insulator[J]. Journal of North China Electric Power University,2010,37(4):1-6.
[3]喻华玉,徐文澄,沈刚.高压电气设备防污闪及带电清洗技术[M].北京:中国电力出版社,2006.
[4]胡毅.“2. 22电网大面积污闪”原因分析及防污闪对策探讨[J].电瓷避雷器,2001(4):3-6.HU Yi. Theanalysis of“the pollution of network on Feb.22th”and counter measures from pollution flashover[J].Insulators and Surge Arresters,2001(2):3-6.
[5]邱志贤.关于污秽条件下使用的高压绝缘子的选择和尺寸确定方法[J].电瓷避雷器,2010(5):6-11.QIUZhixian. Dimensioning and selection of high voltage insulators used in polluted conditions[J]. Insulators and Surge Arresters,2010(5):6-11.
[6]谢恒垫.电气绝缘结构设计原理[M].北京:机械工业出版社,1993.
[7]邱志贤.高压绝缘子的设计与应用[M].北京:中国电力出版社,2006.
[8]朱德恒,严璋.高电压绝缘[M].北京:清华大学出版社,1992.
[9]刘炳尧.高电压绝缘基础[M].长沙:湖南大学出版社,1986.
[10]樊灵孟,刘平原,郑晓光,等.广东电网污闪原因分析和防污对策[J].电瓷避雷器,2006(2):1-6.FANLingmeng,LIU Pingyuan,ZHENG Xiaoguang,et al. The analysis and countermeasures against pollution flashover in guangdong power grid[J]. Insulators and Surge Arresters,2006(6):1-6.
[11]房柯夫,吴光亚,危鹏. 1 000 k V交流输电线路污秽外绝缘设计方法的研究[J].电瓷避雷器,2007(3):1-4.FANGKefu,WUGuangya,WEI Peng. Research of pollution insulation design method for 1 000 k V AC transmission line[J]. Insulator and Surge Arresters,2007(3):1-4.
[12]吴光亚.我国绝缘子的发展现状及应考虑的问题[J].电瓷避雷器,2010(2):7-11.WUGuangya. Development of China’s insulator and the issue should be considered[J]. Insulator and Surge Arresters,2012(2):7-11.
[13]张德赛.一种能提高外绝缘电气强度的绝缘子:中国,ZL200810197722. 5[P]. 2009-04-15.
[14] ZHANG D S. The New Method of Improving External Insulation Strength of HV Equipment[C]//INMR World Congress on Insulators,Arresters,Bushings and Cable Accessories,Crete,Greece. 2009:10-13.
[15] ZHANGD S. What is the Next Step to Insulator in the Future[C]//INMR World Congress on Insulators,Arresters,Bushings and Cable Accessories,Seoul,Korea,April 17-20,2011.
[16]熊刚,张德赛,余长国.应用屏障装置提高复合线路绝缘子的外绝缘性能[J].电瓷避雷器,2012(5):5-8.XIONG Gang,ZHANG Desai,YUChangguo. Improvement of external insulation properties of the composite line insulator with barrier device[J]. Insulator and Surge Arresters,2012(5):5-8.
[17]阳少军,张德赛,杨龙,等.应用附件系统提高复合支柱绝缘子的干闪络电压[J].电瓷避雷器,2013(2):1-4.YANGShaojun,ZHANG Desai,YANG LONG,et al.Improvement of the dry flashover voltage of composite post insulator with accessories system[J]. Insulator and Surge Arresters,2013(2):1-4.
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