| Directed toward 2×200MW unit DCS system epigynous station of Handan cogeneration plant, which upgrades function and improves technologically perfectly, the paper studies and discusses countermeasure and scheme which carry on to improve and perfect technology to the question existing in original DCS systems. Based on researching and analyzing deeply problems of whole network structure, communication way, newly increased count and adopt server and accident analytical system function, and considering fully existing problem and deficiency of the original system, the paper puts forward the whole realization scheme and design principle of the systematic technology improved. The on-the-spot practice proves that design philosophy and whole scheme on DCS that the paper offers to DCS epigynous station technology improved is successful, it strengthens the whole function of the systems, and reduces the cost of operation further. And it offers certain experience and reference for the thing that the technology about DCS system will be improved and perfected in the future.
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