厂用电系统中不同电源切换的特点

Features of Different Power Source Switching in Plant Power Use System

为确保燃煤型火力发电机组重要负载供电的连续可靠,不同电压等级配电装置采用多路进线电源。分析了厂用电系统中不同电源切换的特点,并给出相关电源的接线图;在主电源失电后依据进线电源的特点及切换的逻辑顺序快速合上备用电源,当主电源复电后能将备用电源反切到由主电源供电,为重要负载稳定运行从电源上提供了保障。

In order to ensure continuous reliability of coal-burning thermal power generating sets important load power supply, different voltage grade distribution devices adopted multiple line-in power sources. Analysis was made to different switching features in plant power use system, the wiring diagram of related power source given. On main power source lost, according to features of line-in power source and logic sequence of switching, the spare power source would be quickly making on. When the main power source was recovered, the spare power source can be reversely switched to main power source to supply power, which provided guarantee for important load stable operation from power source.