Design And Research For Coal Transport Control System Of Power Plant Based On HOLLiAS-LK PLC

The Coal-Transporting system is an important part in power plant. How to ensure the reliability of field devices, reduce labour intensity of operators and increase economic efficiency, which become a valuable research topic. PLC (Programmable Logic Controller) is widely used industrial controller integrates computer technology, automation technology, and communication technology together. PLC has lots of advantages, such as complete function, easy to use, high reliability, adaptability, high performance/cost ratio and so on. PLC has become a very powerful tool to achieve industrial automation control system.Here, Coal Transport Control System based on the latest HOLLiAS-LK PLC is present. The system design is based on "Centralized Management, Decentralized Control" model, most thinking about system digital, informational and environmental engineering, and focus on "management and control". It’s an open monitor system integrates process control, computer management.The design of Coal Transport Control Sytem is a targeted and personalized solution on the basis of power plant’s feature and requirement. Now, the HOLLiAS-LK PLC has been successfully used in many Coal Transport Control Sytems. It has been proved that the design has powerful function, stable and reliable capability, flexible adaptability, and has particularly important meaning to improve the management level of power plant.Besides, considering the application of PROFIBUS network in HOLLiAS-LK PLC, and the key role of PROFIBUS in fieldbus system, this thesis make an in-depth study of PROFIBUS. These application experiences of PROFIBUS have important reference value for engineering.