| In the process of heat engineering, majority of the objects have large delay , large inertia and nonline arity, for example, load object of unit plant is a representative object with several variable and close coupling. Therefore, in order to gratify the need of the electric power market's develop, electric power plant should adopt the advanced and mature majorization control project, and PROFI system is just the fire-new and effective system combined advanced control theory and hands-on. This paper analyzed PROFI system, designed and amended PROFI according to the control policy of DCS in Guohua-Dingzhou electric power plant, and did a great deal of examination, in order to faultlessly unite PROFI control policy and ancient control policy. The improved control policy has highly stability and dynamic response character, it successful enhanced unit efficiency.
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