CAJ | 학술논문

为研究气体绝缘全封闭式组合电器（ GIS）中盆式绝缘子表面存在自由金属颗粒时的沿面电场分布及其对沿面闪络的影响，建立了800 kV盆式绝缘子三维结构模型，采用有限元法对盆式绝缘子存在大小、位置及形状不同的自由金属颗粒时分别在工频电压、雷电冲击电压及快速暂态过电压（ VFTO）作用下的电场进行了分析。给出了不同情况下盆式绝缘子的沿面电场分布、沿面法向和切向电场强度分布曲线及电场强度最大值。通过与不存在缺陷时的闪络场强作对比分析，为GIS的绝缘设计提供参考。
위연구기체절연전봉폐식조합전기（ GIS）중분식절연자표면존재자유금속과립시적연면전장분포급기대연면섬락적영향，건립료800 kV분식절연자삼유결구모형，채용유한원법대분식절연자존재대소、위치급형상불동적자유금속과립시분별재공빈전압、뇌전충격전압급쾌속잠태과전압（ VFTO）작용하적전장진행료분석。급출료불동정황하분식절연자적연면전장분포、연면법향화절향전장강도분포곡선급전장강도최대치。통과여불존재결함시적섬락장강작대비분석，위GIS적절연설계제공삼고。
In order to study the surface electric field distribution of basin?type insulator with metal particles existed in the gas insulated switchgear (GIS) and its influence on surface flashover, the 3D structure model of basin?type insulator was established in this paper. The electric field distribution of basin?type insulator with metal particles ex?isted of different size, shape and position was analyzed by using Finite Element Method ( FEM) while the lightning impulse voltage,VFTO and power frequency voltage were imposed on it respectively. The surface electric field dis?tribution of basin?type insulator, the normal and tangential electric field intensity along the surface of radial distri?bution curve and the maximum of electric field strength were given in different situations. Compared with the flash?over field strength of basin?type insulator which has no metal particles, it provides the reference for the insulation design of GIS.