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技术要求 DEH(数字电液)控制系统以一台大容量的微型计算机作为其核心控制元件,它比通常的模拟控制系统具有更多的功能和更良好的性能。对于这种控制系统的一般要求为: 控制功能大范围控制机组升速; 电网频率同步; 就地和远控增减负荷; 单阀和顺序阀运行及相互切换; 自动启动程序和升负荷率控制; 超速保护; 抛部分或全负荷保护; 主蒸汽压力降低自动减负荷; 远控自动减负荷。
Technical Requirements The DEH (Digital Electrohydraulic) control system uses a high-capacity microcomputer as its core control element, which offers more functionality and better performance than typical analog control systems. The general requirements for such a control system are as follows: control function to control unit speedup over a wide range; grid frequency synchronization; load increase and decrease in local and remote control; single valve and sequence valve operation and switching between each other; automatic start-up procedure and load-up rate control ; Speeding protection; throw part or full load protection; reduce the main steam pressure automatically reduce the load; remote control automatically reduce the load.