220kV变电站备用电源自动投入装置的应用与探讨

• 作 者: 赵雪燕 叶岳峰
• 机 构: 河南省电力公司培训中心,郑州供电公司,
• 出 处: 电气应用
• 发表日期: 2010年17期
• 关键词: 备用电源 失压 逻辑回路 母线差动保护 复压过流 联切 自投装置 进线开关 主变压器 电源进线

如果220kV变电站发生全站失压或母线失压事故,为了尽快恢复重要用户供电,可由值班员手动将110kV失压母线上的开关断开,合上110kV备用电源进线开关。这样处理事故的方法,重要用户停电的时间较长。为了解决此问题,110kV备用电源进线开关配备了备用电源自投装置,并且在备用电源自投装置逻辑回路中引入相关闭锁条件,防止自投装置再次将备用电源投入到故障母线或线路,从而避免对电网的又一次冲击。

If 220kV substation total station loss or bus voltage loss accident occurred, in order to restore important user power as soon as possible by the attendant manually switch off the 110kV voltage loss bus, close the 110kV backup power line switch. This way of dealing with accidents, a major user power outage for a long time. In order to solve this problem, the 110kV standby power line switch is equipped with a backup power supply self-throwing device and a related blocking condition is introduced in the logic circuit of the standby power self-throwing device to prevent the self-throwing device from putting the standby power into the failed bus or the line again Avoid further attacks on the grid.