发电厂继电保护整定计算北京中恒博瑞数字电力有限公司二零一零年五月目录继电保护基本概念....................................................................................4一、电力系统故障..................................................................................................................4二、继电保护概念..................................................................................................................4三、对继电保护提出的四个基本要求（四性）及其相互关系...........................................4标幺值计算................................................................................................7一、定义..................................................................................................................................7二、基准值选取......................................................................................................................7三、标幺值计算......................................................................................................................7元件各序等值计算....................................................................................9一、设备类型：......................................................................................................................9二、等值原因..........................................................................................................................9三、主要元件等值..................................................................................................................91．输电线路及电缆.........................................................................................................92．变压器.......................................................................................................................113．发电机......................................................................................................................144．系统..........................................................................................................................145．电容器......................................................................................................................156．电抗器......................................................................................................................15不对称故障计算......................................................................................16一、原理（求解方法）.........................................................................................................16二、各种不对称故障故障点电气量计算.............................................................................17三、保护安装处电气量计算.................................................................................................19四、举例................................................................................................................................22阶段式电流保护......................................................................................25一、I段（电流速断保护）..................................................................................................25二、II端（延时速断）.........................................................................................................25三、III端（延时过流）...............................................
