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RESEARCH PAPERS

Optimal Control of Thermal Power Plants

[+] Author and Article Information
H. Nakamura, Y. Toyota, M. Kushihashi

Kyushu Denki-Seizo Co., Ltd., 19–18, Shimizu 4-chome, Minami-ku, Fukuoka, 815 Japan

M. Uchida

Kyushu Electric Power Co., Inc., 1–18, Watanabe-dori 2-chome, Chuo-ku, Fukuoka, 810 Japan

J. Dyn. Sys., Meas., Control 111(3), 511-520 (Sep 01, 1989) (10 pages) doi:10.1115/1.3153082 History: Received July 01, 1986; Revised August 01, 1988; Online July 21, 2009

Abstract

Application of optimal control system to thermal power plants is introduced. The suggested system consists of the conventional PID controllers and the control computer. It has been successfully applied to five supercritical power plants in Kyushu Electric Power Company (Total output 2,700 MW) since 1978. In the system, system identification or state space representation of the plant is performed based on the AR (Autoregressive) model describing the system dynamics. The optimal controller is designed by the orthodox Dynamic Programming procedure under a quadratic criterion function. In the paper, the procedure of the controller design and the control performance of the system are described with some results obtained both in a power plant simulation model and in the actual plants.

Copyright © 1989 by ASME
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