The R&d And Engineering Application Of Independently Developed Dcs For 600mw Power Unit

In this paper, by analyzing DCS structure, discuss and determine the overall structure of DCS control system in large-scale coal-fired generating units and the characteristics of application system. Focus on the redundancy control technology which is most widely used in control system, as well as the design features of reliability in power plant boilers, turbine security protection system.The essential needs of control technology in large power plant is "high reliability, high precision, rapid control", which requires DCS system in large thermal power generating units should be a certainty system. This paper focuses on and analyzes the three key technology areas which certainty control relying on:â– Certainty communications of unit level network; (unit-level control network technology)â– Certainty data exchange of controller 10 bus; (Bus technology)â– Certainty task scheduling of the application layer inside controller; (software design)Finally, researches with the analysis technique and control strategy of the large power plant.