The Application Of Distributed Control System In Large Thermal Power Plant Unit

Chinese electric power product is now on a stage changing from safetymanagement to management concerning safety as well as economy.At the same time,the development demands higher quality and security of electric power products.It is necessary to reconstruct the original power plant units through using advanced technique and devices.DCS has been maintaining the most widespread and the reliable application by its own characteristic in the unit power plant.This article elaborates contents of the summary,the architecture(software and hardware structure,network structure),the trend of development about DCS.It mainly introduced DCS products of several famous domestic and foreign company,at the same time,analyzing and comparing the product's advantages and disadvantages in the aspects of structure,performance,correspondence as well as database.Simultaneously,it analyzed application of the DCS in the actual engineering project,and has carded on the detailed description from the hardware and the software aspect,meanwhile explained the question and the solution these DCS meets in the application of the project.