363 kV多断口快速真空断路器电场仿真分析  

Electric Field Simulation of the 363 kV Multi-break Fast Vacuum Circuit Breaker

作　　者：黄永宁 余晓 樊益平 杨帆[2] 艾绍贵 杜玮[3] HUANG Yongning;YU Xiao;FAN Yiping;YANG Fan;Al Shaogui;DU Wei(Electric Power Research Institute of Ningxia Electric Power Company of State Grid Corporation of China,Yinchuan 750001,China;State Key Laboratory of Power Transmission Equipment & System Security and New Technology,Chongqing University,Chongqing 400044,China;Wuhan NARI Limited Liability Company of State Grid Electric Power Research Institute,Wuhan 430074,China)

机构地区：[1]国网宁夏电力公司电力科学研究院,银川750001 [2]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044 [3]国网电力科学研究院武汉南瑞有限公司,武汉430074

出　　处：《高压电器》2019年第10期19-24,32,共7页High Voltage Apparatus

基　　金：国家电网公司总部科技项目(5229DK160005)~~

摘　　要：针对真空开关在363kV电压等级电网中的应用问题,提出了一种新型具有串并联结构的多断口快速真空断路器。根据单台断路器的实际设计尺寸建立了多重介质三维电场计算模型,采用有限元计算得到了整机的电场分布。对整机的均压环、绝缘子、灭弧室和均压电容的绝缘强度进行了分析。计算结果表明:在额定电压下,均压环表面电场最大值为1.23kV/mm,绝缘子表面电场最大值为0.48kV/mm,灭弧室内外、均压电容以及其他部件的表面电场均小于0.4kV/mm。整机电场均处于控制范围内,计算结果可以为样机的优化和生产提供参考。Aiming at the application of vacuum circuit breaker (VCB) in the 363 kV power grid, a new multi-break VCB with series and parallel configuration is proposed. According to the actual design structure of single circuit breaker, a 3D electric field analysis model including multiple dielectrics is established. The finite element method is used to calculate the electric field distribution. The insulation strength of the grading ring, insulator, interrupter and grading capacitor is analyzed. Results of calculation under rated voltage show that the maximum electric fields of the grading ring and insulators are 1.23 kV/mm and 0.48 kV/mm, respectively, and the electric fields of the interrupter and grading capacitor are under 0.4 kV/mm. The electric field of the whole 363 kV VCB is in the control range, and the calculation results can be taken as a reference for the optimization and production of the prototype.

关 键 词：多断口 363kV真空断路器 电场分析 有限元法 

分 类 号：TM561.2[电气工程—电器]