Study on Optimization of Control Parameters for Generator Operation with Multiple Units in a Combined Generator System

Abstract

In a combined generator system, it is difficult to decide the optimum operating parameters of the generator for a particular purpose due to the fluctuation in energy unit price and electricity / heat load. Therefore, in this research, we propose a method for the monthly or daily optimization of the operating parameters of generators, and estimate the effect of cost and energy reduction. Moreover, in order to verify the cost savings effect of the proposed method, monthly optimization and daily optimization were applied to an actual general hospital. As a result, with monthly optimization, there was no cost savings effect compared to that of the previous year due to the differences in load and operation. With daily optimization, the cost reduction effect was estimated to be about 250,000 yen / year and the reduction in primary energy consumption was estimated to be about 150 GJ / year, thus confirming the effectiveness of the method.