The Distributed Computer Control System Application Research On Thermoelectric Unit Automation In Operation

Fluidized Bed combustion technology is a high effective and clean technology.Application in the boiler field becoming more and more common. CirculatingFluidized Bed(CFB)combustion technology is one of the best commercial degree ofclean coal combustion technology, which can meet with current environmentalrequirements.Circulating Fluidized Bed Boiler(CFBB)is a control object whose features havedistributing parameter, non-linear, time-variable, great coupling, and the time of largelag. With the current automation level’s improving, the control of Circulatin FluidizedBed Boiler has some development, but the actual automation is not high, manycontrol circles are handled by manual operation. So it is necessary to design anddevelop a Distributed Control System(DCS)to meet with control requirement.Background of this article is according to the actual engineering, based on the analysisof the Circulating Fluidized Bed Boiler(CFBB)work mechanism, to make the controlproblem of bubbles in the water level of CFBB as a key research, design and developa set of distributed control system for CFBB. Main work has been completed asfollows:This design firstly introduced the background of distributed control system andits developing situation. Then combined with the circulating fluidized bed boiler’process features, configured75t/h circulating fluidized bed boiler with SUPCONAdvantrol-Pro configuration software, mainly included overall system configuration,user license management, operation group setting, data group(area) setting, controlstation I/O configuration, control station custom variable configuration, customcontrol scheme configuration, standard operation station picture configuration,flowchart and statements configuration.This design completed the system configuration of75ton fluidized bed boiler.Though Advantrol-Pro software configuration, including flowchart, statements figure,trend figure, general appearance figure and panoramic figure, we can know theoperation of the system. Greatly reducing the number of operators and improve thereliability and safety of the system.