R911190083 CONTROL DEVICE HDS04.2-W200N-HA05-01-FW

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分类:

Description

机组正常起动时,当发电机达到额定转速时,DCS将投入AVR。当发电机电压达到额定值时,DCS将投入同期装置。发电机与电网的同期是由同期装置自动实现,在同期过程中通过DCS控制AVR、DEH,当同期条件满足时,向发电机断路器发合闸指令。在同期合闸成功,发电机电负荷达到一定值之后,DCS将高压厂用电系统快速从启备变切换到高压厂变上。

机组正常停机时,DCS控制降低机组负荷,当机组负荷降到某一定值时,DCS将高压厂用电系统快速切换到启/备变系统供电;当机组负荷继续降到零,跳开主开关,联跳汽轮机(主汽门关闭),发电机灭磁。

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