P0923PL FOXBORO  P0923PL FOXBORO

When the unit is started, the power is supplied to the factory load through the startup/standby changer; when the unit is in normal power consumption, the power supply is supplied by the factory transformer and the 400VMCC low-voltage load is supplied through the low-voltage factory to supply the auxiliary equipment necessary for starting the unit; the power consumption at the factory disappears In order to protect the equipment and system, the factory power quick-cut device should quickly and automatically switch the factory workload to the start/standby transformer; when it is confirmed that the busbar of the protection section is depressurized, the emergency backup diesel engine should be started to supply power to ensure the equipment.

电气设备电气系统的联锁逻辑较简单，但电气设备本身操作机构复杂。因此，机组的电气系统纳入DCS控制，要求控制系统具有很的可靠性。除了能实现正常起停和运行操作外，尤其要求能够实现实时显示异常运行和事故状态下的各种数据和状态，并提供相应的操作指导和应急处理措施，保证电气系统自动控制在合理的工况下工作。

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