It abstract three DCS in high usage frequency and their main characteristic about thermo power plant i.e.OVATION(WESTHOUSE),INFI-90(BAILEY) and XDPS-400(Shanghai NEWHUA). Analysis of the problem in the usage of several mainstream DCS in power plant.

• 阐述了三种在火力发电机组中使用频率较高的分散控制系统,即西屋公司的OVATION、贝利公司的INFI-90、上海新华的XDPS-400等的主要特点,对其在实际应用中暴露出来的问题进行了细致的分析,并提出了部分改进建议。