The authors have so far attempted to make a system configuration during outage works by evaluation indices, such as power supply shortage and overload, in order to maintain high power supply reliability. However, the progress of the electric power deregulation promotes the participation of new players in the power market including a transmission and a power generation companies. It is difficult to fairly evaluate all players representing each company with respect to profits, since system operators may require output adjustments and alternative transmission routes to utilize renewable energy. This paper proposes a method evaluating outage work configurations from the viewpoint of each player participating the power market by means of the Analytic Hierarchy Process. It involves with suppressing solar power generations in case that there are no secure system configurations during outage works. The effectiveness of our study has been confirmed to execute numerical simulations by applying to 77kV provincial system model of IEEJ.
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