PROBLEM TO BE SOLVED: To increase automation rate of work about prior evaluation for the systematic interconnection of distributed power sources, and to enable the work to be done flexibly.;SOLUTION: In a method of calculating an upper limit of connectable capacity with regard to the generators of distributed power sources connected to a distribution system, an output of a generator, which becomes possible by being connected to the distribution system, is calculated based on a minimum load within a fixed period of time in the distribution system, and an upper limit value of connectable capacity is calculated based on the output of the generator.;COPYRIGHT: (C)2009,JPO&INPIT
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