二拖一燃气-蒸汽联合循环机组旁路系统控制策略优化

Optimization of bypass system control strategy for 2GT+1ST combined cycle power unit

为了使二拖一燃气-蒸汽联合循环机组能够快速启、停和安全、高效运行,根据机组旁路系统的结构及特点,设计了旁路系统全程压力控制策略,解决了传统旁路控制系统存在的无法实现全程自动控制,燃机启动时间长,蒸汽大量损失,从而影响机组经济性的问题,并取得了较好的控制效果。

In order to make the gas-steam combined cycle unit realize quick startup/stop and safe and efficient operation,the bypass system full pressure control strategy was designed,according to the structure and characteristics of the unit bypass system.Through this control strategy,the problems affecting the unit economic efficiency,such as the conventional bypass control system can not achieve full automatic control,long startup period of the gas turbine and huge steam loss,were solved.