Master Control Unit Coordinated Control Design

As the main control system of the coal-burning thermal power generating units, boiler turbine coordinated control system External played the role of the peak, frequency modulation, but also internal stability of the unit safe, economical operation. Therefore, we need to design a mature and effective coordination control system, to improve the thermal power plant automation and control water products.Most of the small-scale circulating fluidized bed boiler-150MW unit, usually the parent control run. Generally use the traditional control method, boiler and turbine operate as a single system, the link between the two is not so close, its efficiency and safe operation of the problems, in order to improve the operating efficiency of the master control unit, run stability and security to increase its economic benefits, it is necessary to consider the coordination between the turbine and boiler control.Although the circulating fluidized bed boiler, especially small and medium-sized circulating fluidized bed boiler has a large number of commercial operation, but the automatic control has been one of the main problems of the circulating fluidized bed boiler, the combustion coordination of automatic control system for the basic vote of no on or the input rate is very low, basically rely on manual operation in the actual operation. The main reason is that the circulating fluidized bed boiler itself complex process characteristics, it is more complex than the ordinary boiler coupling relationship, charged with more serious object nonlinear.This article is based on the master control unit coordinated control system as the main object of study, on the basis of previous practical experience, through the analysis of the dynamic characteristics of the system itself, are consolidated and submitted the corresponding control system and its practical applications on the50MW unit and test it.