Optimal Operation of a Gogeneration Plant in Consideration of Equipment Startup/Shutdown Cost

[+] Author and Article Information
R. Yokoyama, K. Ito

Department of Energy Systems Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Sakai, Osaka 599-8531, Japan

J. Energy Resour. Technol 121(4), 254-261 (Dec 01, 1999) (8 pages) doi:10.1115/1.2795991 History: Received November 03, 1997; Revised September 11, 1999; Online November 06, 2007


A rational method of determining the operational strategy of energy supply plants in consideration of equipment startup/shutdown cost is proposed. The operational planning problem is formulated as a large-scale mixed-integer linear programming one, in which on/off status and energy flow rates of equipment are determined so as to minimize the sum of energy supply and startup/shutdown costs over the period considered. By utilizing a special structure of the problem, an algorithm of solving the problem efficiently is proposed. Through a numerical study on the daily operational planning of a gas turbine cogeneration plant for district heating and cooling, the effectiveness of the proposed algorithm, is ascertained in terms of computation time, and the influence of equipment startup/shutdown cost on the operational strategy and cost is clarified.

Copyright © 1999 by The American Society of Mechanical Engineers
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