某项目发电机中性点接地方式及接地装置选型  

Neutral point earthing method & earthing device selection of generator in a project

作　　者：袁雨锋 张平湖 

机构地区：[1]中国联合工程公司,浙江杭州310022

出　　处：《能源工程》2008年第2期15-17,共3页Energy Engineering

摘　　要：通过对非洲某国电站发电机的中性点接地方式进行分析,对发电机中性点接地变压器的选型进行了工程计算,指出发电机中性点接地变压器的参数选择须与发电机定子接地保护相配合。在发电机定子绕组绝缘有较高安全系数的情况下,接地电阻的选取应主要满足限制接地故障电流及与定子接地保护配合的需要。Neutral point earthing mode of generator in a project was analysed and neutral point earthing transformer characteristics were calculated. The neutral point earthing transformer was suitable for the generator stator protection. Based on higher safety factor of generator stator winding insulation, the earthing resistance value was mainly selected according to the limited earthing current and generator stator protection.

关 键 词：发电机 接地变压器 中性点 接地方式 

分 类 号：TM34[电气工程—电机]