电场对干式空心电抗器的绝缘性影响分析  

Analysis of the Influence of Electric Field on the Insulation of Dry-type Air-core Reactor

作　　者：王岩[1] 谭向宇 陈晶 郭小兵[1] 吴彦霖[1] 

机构地区：[1]昆明理工大学,云南昆明650500 [2]云南电力试验研究院(集团)有限公司电力研究院,云南昆明650217

出　　处：《电力电容器与无功补偿》2015年第6期78-81,90,共5页Power Capacitor & Reactive Power Compensation

摘　　要：近年来干式空心并联电抗器在运行过程中事故频发,威胁电力系统安全运行,也造成了较大的经济损失。干式空心电抗器的电场强度过强,会让干式空心电抗器的空气间隙发生沿面放电,一旦发生空气间隙局部放电,会腐蚀聚酯薄膜绝缘,引起绝缘劣化,进一步造成绝缘击穿,威胁着电力系统的安全运行。因此,通过有限元仿真软件对1台BKDK-20000/35型干式空心电抗器进行模型搭建,并对其进行数值计算,分析其电场分布情况,研究电场对干式空心电抗器绝缘性的影响。In recent years, the frequent fault of dry-type air-core shunt reactor in the operation not only threatens safe operation of power system, but also causes great economic losses. Excessive strong electric field strength of the dry hollow reactor will lead surface discharge of the reactor sphere gap and, once in the event of partial discharge of sphere gap , the insulation of polyester film is corroded, causing further dielectric breakdown and threatening safe operation of power system. Therefore, a model of one unit of BKDK-20000/35 dry-type air-core reactor is set up by way of finite element simulation software and its numerical calculation so to analyze its electric field distribution and study the influence of electric field on the insulation of air-core reactor.

关 键 词：电场 有限元 绝缘 数值计算 

分 类 号：TM47[电气工程—电器]