POWER SUPPLY CONTROL SYSTEM AND POWER SUPPLY CONTROL METHOD

PROBLEM TO BE SOLVED: To prevent system fluctuation in a power system in which power is supplied from a plurality of power plants including a power plant utilizing natural energy to consumers. SOLUTION: A system 1 for controlling power supply from each of power plants in a power supply system in which power is supplied from a plurality of power plants including a solar power plant 12 and a wind power plant 13 to a consumer 210 includes a weather information acquiring section 160 which acquires weather forecast information about weather forecast in the future from a weather forecast server 300, and a control section 140 which determines whether or not the power generation of each of the solar power plant 12 and the wind power plant 13 suddenly increase due to a change in weather on the basis of the weather forecast information acquired by the weather information acquiring section 160, and if it is determined that the power generation suddenly increases, changes over switches 42, 43, 46 so that power supply from the solar power plant 12 and the wind power plant 13 to the consumer 210 can be interrupted. COPYRIGHT: (C)2011,JPO&INPIT