750kV变电站支持绝缘子在高海拔地区的污闪特性研究  

Study on Flashover Performance of Post Insulator for 750kV Transformer Substation in High Altitude Area

作　　者：王黎明[1] 龙彪[1] 周军[2] 毛苏春[1] 张福增[1] 贾志东[1] 关志成[1] 

机构地区：[1]清华大学深圳研究生院,深圳特区518055 [2]中国电力科学研究院,北京市100085

出　　处：《电力设备》2005年第12期6-9,共4页Electrical Equipment

摘　　要：在2种盐密、4种海拔高度(气压)下对3种不同伞形结构的750kV电站支持绝缘子进行了人工污秽试验,得出不同支持绝缘子污闪电压随海拔高度(气压)的变化规律。对于不同结构绝缘子,分别给出750kV变电站所需的最低绝缘高度。并对伞裙结构进行了选择。Artificial contamination tests were carried out for three types of porcelain post insulators in four air pressure cases corresponding to the altitude from 0 m to 3000 m and in two typical kinds of equivalent salt deposit density （ESDD）. The test results indicate the regularity of the flashover voltage of polluted post insulators at different altitudes. The heights of post insulators, which match the 750kV transformer substation, were put forward accordingly.

关 键 词：750 KV 高海拔 支持绝缘子 污闪特性 绝缘高度 电力系统 

分 类 号：TM723[电气工程—电力系统及自动化] TM85