The Research And Design Of Coal Handling Control System In Thermal Power Plant For Electrical Control

Coal is the energy source of power plant.Handling System is the process that the coal is transported to the coal bin. Because coal transportation environment is very bad scene,handling system will greatly damaged the health of workers. With the continuous development of the national economy, with rising electricity, thermal power plant capacity will continue to increase The main content of this paper is Coal Handling System, which is the key to the normal operation of thermal power plants, coal handling control system at present China’s thermal power plants are mainly unloading part, the heap of coal section, blending parts, coal section. Something is Important to perform automation equipment which is disccoalfeeder, dumper, Separators, rubber belt conveyors, electric three baffles, ESP, roller screen, coal crusher, coal plow and so on. Unloading section and Coal heap section is independent, so Coal section and Coal Blending is the focus of this issue. On the basis of coal and Coal Blending program flow control, and the understanding of the fault detection method, we construct the entire control system architecture. Entire thermal power plant Coal Handling System will use industrial fieldbus, industrial computer, programmable logic controllers, etc. With controller as the control center of the whole system, we will build a more complex control system for coal and Coal Blending. This control system can use much Operation, such as Chain/unlock manual, programmable automatic, local operation. The main contents are as follows:We can propose coal thermal power plant electrical automatic control system of the overall solution after understand the process of the project. The program includes:the whole system of coal handling equipment hardware electrical connection system, the control program based Siemens PLC, the control interface based WinCC.PLC is a customized industrial Controller device for controlling,which is easy to operate, reliable, universal usability. PLC is a foremost control part of the Contemporary industrial control system, has an extremely wide range of applications, will be widely used in coal handling system.In the actual production process, the design of coal electrical control has the following characteristics, Such as stable and secure overall, Meet the process requirements and improve the overall efficiency. The system makes full use of the advantages of Siemens industrial products, and the design of the program has some value in engineering.