CAJ | 학술논문

近年来，西北电网多次发生绝缘子闪络跳闸事故，对电网供电可靠性造成了重大影响，经济损失很大。绝缘子表面聚集的污秽是引起闪络的主要原因之一。该文应用有限元法对西北电网两种不同盘径的330 kV线路悬式复合绝缘子进行了建模，并对污秽状态下的电场分布进行了仿真和比较。分析了不同污秽情况下此两种不同盘径复合绝缘子的电位、电场分布情况；研究了污层电导率对复合绝缘子电位、电场分布的影响；对比了污层均匀分布和不均匀分布对复合绝缘子表面电场分布的影响；研究了不同盘径绝缘子组合下绝缘子串的污秽承受能力。
근년래，서북전망다차발생절연자섬락도갑사고，대전망공전가고성조성료중대영향，경제손실흔대。절연자표면취집적오예시인기섬락적주요원인지일。해문응용유한원법대서북전망량충불동반경적330 kV선로현식복합절연자진행료건모，병대오예상태하적전장분포진행료방진화비교。분석료불동오예정황하차량충불동반경복합절연자적전위、전장분포정황；연구료오층전도솔대복합절연자전위、전장분포적영향；대비료오층균균분포화불균균분포대복합절연자표면전장분포적영향；연구료불동반경절연자조합하절연자천적오예승수능력。
In recent years, insulator flashover occurred repeatedly in the northwest power grid, and caused tripping accidents and a large economic losses, which is a major risk for the reliability of power supply. Contamination on the surface of insulators is one of main reasons causing flashover. In this pa-per, the electric field distribution of 330 kV line composite insulator which covered by contamination was studied used finite element method. It was analyzed that distribution of potential and electric field of com-posite insulator covered different contamination. The effects of conductivity of pollution layer on the distri-bution of potential and electric field of composite insulator was studied. It was compared that electric field distributions of composite insulators cover by uniform and non-uniform pollution layers.