並列処理による超リアルタイムシミュレーションコントロール(SRTC)のボイラ蒸気温度制御への応用

概要

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This paper has proposed a method which improves superheater and reheater steam temperature control in sliding pressure operation of a once-through boiler. The proposed control system is based on the super-real-time simulation in which a physical model is introduced to present the boiler dynamics within most of the operating range of load. The optimal actuating signals, such as spray flow and gas recirculation flow rate, have been determined by solving the physical model equation in order to keep steam temperature constant at every specified time interval with the aid of parallel microprocessors. The predictive action of SRTC compensates the lag of temperature dynamics at the change in load so that it stabilizes the control system much better than conventional PID feedback control. It is shown in this paper that the method has been successfully applied to a 1000 MW power plant.
一般社団法人日本機械学会の論文
1995-02-25