燃气-蒸汽联合循环电厂空冷系统顺序控制设计与应用

Sequence control design and application of air cooling system for a gas-steam combined cycle power plant

为实现马来西亚某燃气-蒸汽联合循环电厂空冷系统的自动顺序控制,在分析空冷系统设计参数及控制系统配置的基础上,根据机组状态对空冷系统进行了顺序启动、顺序停机设计,为保证机组安全运行,设计了专用的空冷凝汽器背压调节系统。空冷系统采用顺序控制方式后,提高了机组的自动化水平,降低了运行人员的劳动强度。

In order to realize the automatic sequence control of air cooling system for a certain gas-steam combined cycle power plant in Malaysia,the sequence start-up and sequence shutdown functions for the air cooling system were designed according to the unit condition,which based on the analysis of design parameters and the control system configuration of air cooling system.In addition,a dedicated back pressure adjusting system for aircooling condenser was designed in order to ensure the safe operation of unit. Since the adoption of sequence control mode for air cooling system,the automation level of the unit was improved and the labor intensity of operating staff was reduced.