AV6PLUS旁路系统功能介绍中文版..doc

功能描述 高压旁路站 HP Bypass Station Overview (Diagram D) 概述（图标D） The HP Bypass System consists of the following parts: 高旁由下列部分组成 ? Pressure setpoint generation (Diagrams DA/RA) 压力设定值生成（图标DA/RA） ? Pressure controller (Diagram DB/TB) 压力控制器（DB/TB） ? Temperature controller (Diagram DC) 温度控制器（图标DC） ? Spraywater isolation control (Diagram SD) 喷水隔离控制（图标SD） Pressure setpoint generation 压力设定值生成 2.1 Startup 启动 2.1.1 Mode Selection (Diagram RA) 模式选择（图标RA） The BP controller is set to “BP auto” by the operator. 旁路控制器被操作员设置成“BP auto” Operator sets “startup mode ” with “BP start mode on/off” display button. 操作员将“BP Start mode on/off”显示按钮设置为“启动模式” In “startup mode” the generator it is set to one of the three operating conditions: 在“startup mode”下，生成器被设置成一下三种运行状况： ? Cold start up 冷态启动 ? Hot start up 热态启动 ? restart 重启 The “cold start up” is active whenever the main steam pressure is below “Pmin”. 当主蒸汽压力低于“Pmin”时冷态启动激活 The “hot start up” is active when the main steam pressure is above “Pmin” and below “Psync”. 当主蒸汽压力介于Pmin 和Psync时热态启动激活 The “restart” is active when the pressure is above “Pmin” and the BP valve is closed. 当主蒸汽压力高于Pmin且旁路阀关闭时重启模式激活 The signal “cold/hot start up” is generated when the operating “cold start up” or “hot start up” is on. 当“冷态启动”或者“热态启动”在开位置时产生“冷/热态启动”信号 The “startup mode” is deselected as soon as the pressure reaches “Psync” and the BP valve is open. The “startup mode” is also deselected when the signal “HP Turbine loaded” is active or when the pressure controller is switched to manual. 当压力达到Psync且旁路阀打开时，“start up mode”模式失效，当汽机带载信号激活或者压力控制器切换到手动状态时启动模式也失效。 The “fixed pressure mode” is active when the “startup mode” is not on and the “follow mode“ is not on and the “shut down mode” is not on. 当“startup mode”模式没在开位且“follow mode”未开且“shut down mode”模式也未开时，“fixed pressure mode”定压模式激活 The “follow mode” is active when the BP valve is closed and the DEH signal “HP Turbine loaded” is active. Further the “follow mode” is active when the signal “Boiler on” is not on and the