Distribution of Conductive Ions in Ice-Covered Composite Insulators
Jiang Xingliang 1， Hu Yuyao 1， Wang Quanlin 1， Fan Caijin 1， Zhu Chengzhi2
1.State Key Laboratory of Power Transmission Equipment & System Security and New TechnologyChongqing University Chongqing 400044 China 2.State Grid Zhejiang Electric Power Corporation Hangzhou 310000 China
Abstract：To research the influence of the electric filed and pollution method on the distribution of conductive ions in ice-covered composite insulators,a series of energized and non-energized tests were conducted on 35 kV composite insulators with glaze icing using two different types of pollution methods in artificial climate chamber.Combined with COMSOL simulation,the influence of water droplet on the icicle tip and droplet ejection during icing on insulators icing was analyzed.And the influence rule of the electric field,pollution method and pollution severity on ions distribution was revealed.Test results show that the appearance of ice-covered insulator,ions distribution in the ice layer and icicle and the flashover voltage are significantly impacted by the electric field;melting water conductivity under energized condition is lower than that under non-energized condition using icing water conductivity method;melting water conductivity is much higher than freezing water conductivity using the sold layer method under non-energized condition;the flashover voltage of ice-covered insulator under energized condition is higher than that under non-energized condition,however,melting water conductivity during the flashover is opposite.Therefore,the crystallization effect should be taken into account when analyzing the flashover performance of ice-covered insulators.
蒋兴良，胡玉耀，汪泉霖，范才进，朱承治. 覆冰绝缘子导电离子分布规律[J]. 电工技术学报, 2017, 32(15): 199-206.
Jiang Xingliang， Hu Yuyao， Wang Quanlin， Fan Caijin， Zhu Chengzhi. Distribution of Conductive Ions in Ice-Covered Composite Insulators. Transactions of China Electrotechnical Society, 2017, 32(15): 199-206.
[1] 周浩,邱文千,孙可,等.特高压交直流输电技术[M].杭州:浙江大学出版社,2014. [2] 蒋兴良,舒立春,孙才新.电力系统污秽与覆冰绝缘[M].北京:中国电力出版社,2009. [3] 潘力强,张文磊,汤吉鸿,等.2008年湖南电网特大冰灾事故综述[J].电网技术,2008,32(增刊2):20-25. Pan Liqiang,Zhang Wenlei,Tang Jihong,et al.Overview of the extraordinarily serious ice calamity to Hunan Power Grid in 2008[J].Power System Technology,2008,32(S2):20-25. [4] 袁伟,舒立春,蒋兴良,等.交流电场对220 kV复合绝缘子覆冰及其闪络特性的影响[J].高电压技术,2013,39(6):1541-1548. Yuan Wei,Shu Lichun,Jiang Xingliang,et al.Influence of AC electrical field on 220 kV composite insulators icing and flashover characteristics[J].High Voltage Engineering,2013,39(6):1541-1548. [5] 赵世华,蒋兴良,张志劲,等.环境参数对110 kV复合绝缘子覆冰增长过程的影响[J].高电压技术,2012,38(10):2575-2581. Zhao Shihua,Jiang Xingliang,Zhang Zhijin,et al.Impact of environmental parameters on the icing process of 110 kV composite insulators[J].High Voltage Engineering,2012,38(10):2575-2581. [6] Farzaneh M,Zhang J,Volat C.Effect of insulator diameter on AC flashover voltage of an ice-covered insulator string[J].IEEE Transactions on Dielectrics and Electrical Insulation,2006,13(2):264-271. [7] 薛艺为,阳林,郝艳捧,等.输电线路悬式复合绝缘子雨凇与轻雾凇覆冰形态和覆冰过程对比研究[J].电工技术学报,2016,31(8):212-219. Xue Yiwei,Yang Lin,Hao Yanpeng,et al.A comparative study on icing morphology and process of glaze and light rime in suspension composite insulators on transmission lines[J].Transactions of China Electrotechnical Society,2016,31(8):212-219. [8] 胡琴,袁伟,舒立春,等.电压类型对复合绝缘子覆冰及闪络特性的影响[J].电工技术学报,2015,30(3):268-276. Hu Qin,Yuan Wei,Shu Lichun,et al.Influence of voltage types on composite insulator icing and flashover characteristics[J].Transactions of China Electrotechnical Society,2015,30(3):268-276. [9] 刘毓,蒋兴良,舒立春,等.复合绝缘子伞裙结构特征参数对其冰闪特性的影响[J].电工技术学报,2014,29(8):319-326. Liu Yu,Jiang Xingliang,Shu Lichun,et al.Influence of characterizing shed configuration parameters of composite insulators on icing flashover performance[J].Transactions of China Electrotechnical Society,2014,29(8):319-326. [10]张志劲,蒋兴良,胡建林,等.间插布置方式对交流绝缘子串覆冰特性影响[J].电工技术学报,2011,26(1):170-176. Zhang Zhijin,Jiang Xingliang,Hu Jianlin,et al.Influence of the type of insulators connected with alternately large and small diameter sheds on AC icing flashover performance[J].Transactions of China Electrotechnical Society,2011,26(1):170-176. [11]Farzaneh M,Zhang J,Chen X.Modeling of AC arc discharge on ice surfaces[J].IEEE Transactions on Power Delivery,1997,12(1):325-338. [12]Farzaneh M,Zhang J.Modeling of DC arc discharge on ice surfaces[J].IEE Proceedings-Generation Transmissions and Distribution,2000,147(2):81-86. [13]Farzaneh M,Chen X,Zhang J.The influence of applied voltage on the surface conductivity of atmospheric ice deposited on insulating surfaces[C]//IEEE International Symposium on Electrical Insulation,Montreal,Montreal,Quebec,Canada,1996:275-278. [14]邓禹,贾志东,韦晓星,等.冰水相变过程中盐分迁移现象及其对融冰泄漏电流的影响[J].中国电机工程学报,2012,32(28):184-191. Deng Yu,Jia Zhidong,Wei Xiaoxing,et al.Salt migration phenomena during phase transition in cooling water and its impact on leakage current[J].Proceedings of the CSEE,2012,32(28):184-191. [15]Deng Yu,Jia Zhidong,Wei Xiaoxing,et al.Mechanism of salt migration in icicles during phase transition and its impact on ice flashover[J].IEEE Transactions on Dielectrics and Electrical Insulation,2012,19(5):1700-1707. [16]蒋兴良,赵世华,张志劲,等.覆冰绝缘子串泄露电流与覆冰量及覆冰水电导率的关系[J].电工技术学报,2014,29(10):296-303. Jiang Xingliang,Zhao Shihua,Zhang Zhijin,et al.Relationship between leakage current of ice-covered insulators icing weight,and icing water conductivity[J].Transactions of China Electrotechnical Society,2014,29(10):296-303. [17]Jiang Xingliang,Chen Ling,Zhang Zhijin,et al.Equivalence of influence of pollution simulating methods on DC flashover stress of ice-covered insulators[J].IEEE Transactions on Power Delivery,2010,25(4):2113-2120. [18]董冰冰,蒋兴良,黎振宇,等.35 kV输电线路绝缘子串交流覆冰闪络特性试验方法的比较[J].高电压技术,2014,40(2):421-426. Dong Bingbing,Jiang Xingliang,Li Zhenyu,et al.Comparison of test methods on AC icing flashover performance of insulators installed in 35 kV transmission lines[J].High Voltage Engineering,2014,40(2):421-426.
2017, Vol. 32 
