CCS与DEH功率控制接口的分析和改进

Discussion and Improvement on Load Control Interface Between CCS System and DEH System

汽轮机和锅炉响应外界负荷变化的动态特性不同,要求控制系统必须很好地协调机炉两侧的动作。协调控制系统和汽轮机电液控制系统的功能决定了负荷控制的性能。首先说明了CCS系统和DEH系统的特点及基本控制方式,之后对某厂实际运行中由于两个系统的信号接口问题导致的一次机组过负荷事故进行分析,并给出了解决方法。

Due to the different dynamic characteristics of turbine and boiler responding to load variation, their coordination through the control system is essential. Performance of control system is dependent on the function of the Coordinated Control System (CCS) and the Turbine Digital ElectricHydraulic Control System (DEH) .The basic control schemes and characteristics of CCS and DEH are described. An over load accident in a power plant due to the interface problem between two systems is discussed. Countermeasures are proposed to improve the reliability of control systems.