Description
机组整套启动时从锅炉点火至发电机并网带初始负荷够实现全过程的自动程序控制。(当然可以设有限几个断点人工分析判断决定后介入操作)，或机组停机时DCS能安全停机。
机组自启停控制的要求是：
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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