染污復合絕緣子電場仿真研究
王曉杰
（國網福建省電力有限公司電力科學研究院，福建 福州 350007）
摘 要：基于Ansoft Maxwell有限元軟件，建立了110 kV復合絕緣子及其染污模型，介紹了清潔絕緣子、污染絕緣子電場分布規律，分析了染污絕緣子存在如位置、數量及電參數等不同形式的干燥帶時沿面電場的分布規律。研究結果表明：不論絕緣子出現何種形式的干燥帶，接近高壓端的干燥帶總是具有更高的電場強度；干燥帶出現在絕緣子傘裙的上下表面時，干燥帶的電場分布規律相同；在一定范圍內，干燥帶電場強度分布取決于干燥帶相對介電常數。
關鍵詞：染污絕緣子；干燥帶；相對介電常數；有限元分析
中圖分類號：TM216 文獻標識碼：A 文章編號：1007-3175(2017)08-0027-04
Research on Electric Field Distribution of Contaminated Composite Insulators
WANG Xiao-jie
（State Grid Fujian Electric Power Company Research Institute, Fuzhou 350007, China）
Abstract: Based on the software of finite element analysis (FEA), Ansoft Maxwell, this paper established the model of 110 kV composite insulators. Introduction was made to the electric field distribution law of cleaning insulators and contaminated Insulators. This paper analyzed how numbers and location of dry band influenced on its electric field distribution. The research results show that the closer to the high voltage section the dry band, the higher the electric field intensity. When the dry band presented up and down surface of insulators umbrella skirts, their electric field distribution of the dry band had the same law. Within limits, the electric field intensity of the dry band was mainly determined by the relative permittivity of dry band.
Key words: contaminated insulator; dry band; relative permittivity; finite element analysis
參考文獻
[1] 張智偉. 輸配電線路復合絕緣子的選擇與技改[J].絕緣材料，2008，41(1)：26-29.
[2] 羅勇芬，韋加雄，何立柱，等. 內電極和均壓環配置法優化復合絕緣子的沿面電場和電位分布[J].電瓷避雷器，2009(1)：7-11.
[3] MUKHERJEE P K, AHMED A, SINGER H.Electric field distortion caused by asymmetric pollution on insulator surfaces[J].IEEE Transactions on Dielectrics and ElectricalInsulation，1999，6(2)：175-180.
[4] HUO Feng, CHEN Yong, CAI Wei, et al.Surface electrical field distribution simulation and insulation characteristics test of polluted insulators[J].High Voltage Engineering，2008，34(12)：2621-2625.
[5] 劉向實. 污穢條件下復合絕緣子電場仿真研究[J].電瓷避雷器，2014(5)：31-36．
[6] 郝艷捧，熊國錕，劉芹，等. 基于有限元法的染污直流支柱復合絕緣子傘裙參數優化[J]. 中國電機工程學報，2013，33(22)：183-190.
[7] 邱大慶. 覆冰、污穢條件下復合絕緣子電場分布研究[J]. 電瓷避雷器，2015(1)：26-30.
[8] CHAKRAVONI S, STEINBIGLER H.Boundary element studies on insulator shape and electric field around HV insulators with or without pollution[J].IEEE Transactions on Electrical Insulation，2000，7(2)：169-176.
