IEEJ Transactions on Power and Energy
Online ISSN : 1348-8147
Print ISSN : 0385-4213
ISSN-L : 0385-4213
A Study on Power Flow Congestion Relief in Cooperation with Customer-side Cogeneration Systems
Ken FurusawaKazunori YanaseHideharu SugiharaKiichiro Tsuji
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2007 Volume 127 Issue 2 Pages 361-370


Dispersed generation technologies (e.g. Gas-engines) have greatly advanced in recent years. Gas engines are often operated as the main component of a cogeneration system (CGS). By using exhaust heat, the total efficiency of CGSs can reach from 70% to 80%, and as a result, it is also useful for reductions of CO2 emission. Therefore CGSs have been given preferential treatment by the Japanese government and their installation and use is expected to become widespread in the future. As a demand response program, the authors proposed a method whereby CGSs at the customer-side are used for congestion relief in transmission networks. In the proposed method, the optimal configuration of energy systems including CGSs at the customer-side is determined. As well, the optimal operation of the electric utility's generators is also determined taking into account the CGS operation patterns. This paper evaluates both costs to the electric utility and the customers' cost for congestion relief in transmission networks. Further, we evaluate the influence on CO2 emission and primary energy consumption from the view point of a unified energy system with CGSs providing input on a flexible operation pattern.

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© 2007 by the Institute of Electrical Engineers of Japan
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