Research and Application of Reheat Steam Temperature Optimization Control System of Power Plant Based on Fully Autonomous Controlled DCS
In response to the large lag and inertia characteristics of the reheat steam temperature control object in ther-mal power units,a new reheat steam temperature optimization control system has been developed based on an au-tonomous and controllable DCS,cascade regulation as the foundation,comprehensive use of advance control technologies such as phase compensation control,state variable feedback control,adaptive control and intelligent feedforward control technology,which can effectively improve the closed-loop control characteristics of the steam temperature control object.The reheat steam temperature optimization control system has been successfully applied to the reheat steam temperature control of a 320MW unit.The actual operation shows that during the process of variable load and steady-state operating conditions of the unit,the optimized reheat steam temperature control has achieved good control quality.
power unitreheat steam temperature controloptimization controllarge hysteresislarge inertia
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