Analysis and suggestion on safety reliability of DCS

With large-scale application of DCS in thermal power plants,thermodynamic automatic system has played a dominant role in safe and economic operation of generating units,meanwhile the safety problems DCS become increasingly prominent.Based on the statistics of DCS faults in the local thermal power plants during the last few years,following the corresponding national regulations and standards of power industry,the faults and safety implications of DCS were analyzed in this paper.It covers the fields of hardware,software,SOE, communication network,power supply and design configuration etc,in addition,this paper proposed the apphcable solutions to improve the safety and reliability of DCS by means of design and configuration optimization,application technology upgrading,operation and management enhancing,etc.