摘要
采用复合绝缘代替纯空气绝缘的金属封闭开关柜,实现了空气绝缘开关柜的小型化。但其多种绝缘介质以及绝缘界面共存的复杂结构,对电场分布以及其绝缘能力的评估带来了很大的困难。文中针对空气绝缘开关柜中的固封—手车式断路器触臂处复合绝缘结构进行了研究,通过对不同绝缘结构和绝缘材料在各电气间隙情况下的绝缘能力进行仿真和试验,结果表明:电场仿真中的最大电场强度不能作为评判复合绝缘击穿的标准,复合绝缘结构中的关键部位,如小间隙、界面等处的电场大小对绝缘耐受能力具有决定性的意义。研究结果为复合绝缘结构设计及仿真提供有益的参考。
Applying composite insuahion to replace pure air insulation in the design of compact air-insulated metal enclosed switchgears for achieving the goal of compact design.More types of dielectrics and insulation interfaces coex- ist in composite insulation switchgears.This complex insulation configuration results in enormous difficult for calcu- lating the electric field distribution and evaluating insuahion performance.In this paper, a systemic investigation was implemented on composite insulation of contact arm, simulation and tests were completed under different insulation configuration and materials, results show that the maximum electrical field can not be used as the criteria to evaluat- ing whether breakdown occurs in composite insulation system, the electric field value in key location（samll gap and interface） of composite insulation configuration possess decisive significance for evaluating the insulation withstand capability.These results concluded in this papers can provide some significant proposals for the design of composite insulation configurations and simulations.
作者
谭东现
贺弋玲
林钧
茅雷
刘玉华
肖登明
TAN Dongxian;HE Yiling;LIN Jun;MAO Lei;LIU Yuhua;XIAO Dengming(Department of Electric Engineering, Shanghai Jiao Tong University, Shanghai 200030, China;Shanghai Rox-electric Company Shanghai 201807, China;School of Cyberspace Security, Beijing University of Posts and Telecommunications, Beijing 102209, China;State Grid Zhejiang Electric Power Company, Ltd., Ningbo Electric Power Supply Company, Zhejiang Ningbo 315012, China;State Grid Nantong Power Supply Company, Jiangsu Nantong 226006, China;State Grid Dongtai County Electric Power Company, Jiangsu Dongtai 224200, China)
出处
《高压电器》
CAS
CSCD
北大核心
2018年第4期28-33,42,共7页
High Voltage Apparatus
关键词
复合绝缘
绝缘结构
绝缘特性
电场仿真
composite insulation
insulation configuration
insulation capability
electric field simulation
