Description
根据已建成300MW机组的运行经验,九江、信阳、益阳电厂机炉控制中采用DCS以CRT和键盘监控为中心后,尽可能地减少控制盘台上的显示仪表、操作器/开关、报警窗等,仅保留的后备监控设备为:
(1)模拟量信号全部进DCS显示,盘上仅保留少量显示仪表。
(2)只保留少量的重要电气开关并取消电气控制屏/盘,控制功能在DCS实现。关于手动同期开关的保留与否,由于自动准同期装置产品的可靠性已越来越高,建议取消手动同期开关。保留的后备手操开关为:发变组断路器紧急跳闸按钮;发电机灭磁开关跳闸按钮;柴油发电机紧急按钮。
(3)报警光字牌数量保留20个左右,与热工报警合并在一起,既减少了设备的种类,又便于布置。
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