高潮湿环境下电力设备绝缘材料劣化分析  

Analysis of Insulating Materials Deterioration of Electric Power Equipment in High Humidity Environment

作　　者：杜道忠 陈新 王智勇 韩玉辉 曹利伟 顾志斌 DU Daozhong;CHEN Xin;WANG Zhiyong;HAN Yuhui;CAO Liwei;GU Zhibin(NR Electric Power Electronics Co.,Ltd.,Changzhou 213025,China)

机构地区：[1]常州博瑞电力自动化设备有限公司,江苏常州213025

出　　处：《电工技术》2021年第3期149-150,共2页Electric Engineering

摘　　要：针对一起电力设备绝缘材料发生绝缘劣化问题,开展设备内部电场仿真分析。通过对比不同工况下场强分布,发现在材料表面潮湿情况下,绝缘结构拼接处周围场强过大,出现绝缘薄弱环节,指出产生的电场强度集中泄漏电流热效应为绝缘劣化原因。仿真结果表明减少绝缘材料表面湿度、取消结构件拼接可有效避免高潮湿环境下绝缘材料绝缘劣化问题。Aiming at the problem of insulating materials deterioration in electric power equipment,the simulation analysis of the electric field of the equipment was carried out.Through the comparison of the field strength distribution under different working conditions,it was found that the field strength around the splicing of the insulating materials was above normal value when the surface of the materials was wet.It was pointed out that the thermal effect of leakage current was the reason for the insulation degradation.The results showed that reducing the humidity of the surface of the insulating material and canceling the splicing of the structural parts could effectively avoid the problem of insulation degradation in this case.

关 键 词：高潮湿环境 绝缘材料 绝缘劣化 电场强度 

分 类 号：TM852[电气工程—高电压与绝缘技术]