摘要
输电线路复合绝缘子伞裙破损时,其表面、沿面和空间电场会发生相应变化,因此可以通过电场分布直观反映绝缘子的运行状态。以FXBW—110/120—2型复合绝缘子为研究对象,通过建立起伞裙完整状态、不同破损位置及程度状态时的有限元电场仿真模型,对比分析了前后状态的电场分布特征,可知:绝缘子串高压端的伞裙发生破损时,破损边缘的表面电场强度相比周围明显增大,沿面电场曲线在相应位置会下降,而空间轴向电场分布曲线没有明显影响;伞裙破损得越严重,对表面场强和沿面场强的影响越大。
When sheds of composite insulators in the transmission lines are damaged,the surface,creeping and axial electric field will change accordingly. Therefore,the operation state of the insulators can be directly reflected through the electric field distribution. FXBW-110/120-2 composite insulators were taken as the research object.By establishing the finite element electric field simulation model of the intact state,different damaged position and degree of the sheds,the electric field distribution characteristics of the before and after states were compared and analyzed. It is known that when sheds of insulator strings are damaged in high voltage side,the surface electric field strength of the damaged edge is obviously increased compared to the surrounding area. The curve of the electric field along the surface will decline at the corresponding position,but the axial electric field distribution curve has no significant influence. The more severely the skirt is damaged,the greater the influence on the surface field strength and the creeping field strength has.
作者
贾伯岩
张志猛
刘杰
王平
李抗
耿江海
JIA Bo-yan;ZHANG Zhi-meng;LIU Jie;WANG Ping;LI Kang;GENG Jiang-hai(State Grid Hebei Energy Technologies Service Co., Ltd, Shijiazhuang 050090, China;State Grid Hebei Electric Power Research Institute, Shijiazhuang 050021, China;Hebei Provincial Key Laboratory of Power Transmission Equipment Security Defense, North China Electric Power University, Baoding 071003, China)
出处
《科学技术与工程》
北大核心
2019年第12期176-181,共6页
Science Technology and Engineering
关键词
复合绝缘子
伞裙破损
有限元仿真
电场分布
composite insulator
sheds damaged
finite element simulation
electric field distribution
作者简介
第一作者:贾伯岩(1978-),男,汉族,河北石家庄人,博士,高级工程师。E-mail:horace2625@139.com;通信作者:耿江海(1980-),男,汉族,河北邯郸人,硕士,高级工程师。E-mail:gengjianghai@163.com。
