Distributed electric power generation system, control station, and method of controlling the same

A distributed electric power generation system operable to control individual amounts of power generation of a plurality of power generators provided in a predetermined grid without any external power source and to supply electric power corresponding to a demand consumed in the predetermined grid, comprising:

• a control station operable to:
• acquire information on an electric power distribution period used to calculate a period during which electric power supply is needed upon an interruption of electric power supply from the external power source and acquire an amount of power supply demand that corresponds to a demand consumed in the predetermined grid during the period during which electric power supply is needed, the period being determined from the acquired information on the electric power distribution period, and
• determine whether a single power generator capable of maintaining a predetermined efficiency for the demand can supply electric power based upon the calculated electric power distribution period and the amount of power supply demand.

A method of controlling a distributed electric power generation system, comprising:

• an information acquisition step of acquiring information on an electric power distribution period used to calculate a period during which electric power supply is needed upon an interruption of electric power supply from an external power source in order to supply electric power to a plurality of demand loads connected to a power transmission grid network with a plurality of electric power distribution stations that can generate electric power upon the interruption of the external power source and acquiring an amount of power supply demand to be supplied via the power transmission grid network during the period during which electric power supply is needed, the period being determined from the acquired information on the electric power distribution period;
• and
• a selection step of selecting a less costly combination of one or a required number of electric power distribution stations for supplying electric power to the plurality of demand loads as electric power generation facilities based upon a start and stop cost and a running cost of each of the electric power distribution stations in accordance with the calculated electric power distribution period and the amount of power supply demand.