POWER SUPPLY SYSTEM, POWER SUPPLY METHOD, AND CONTROL DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a power supply system or the like which effectively utilizes a new energy power generation system that generates power even if the system is paralleled off.

SOLUTION: The power supply system 1 supplies power to a load 3 from at least one of a commercial power supply source 5, a photovoltaic power generation part 7, a fuel battery power generation part 9 and a power accumulation part 11. The commercial power supply source 5 supplies power to the load 3 via a first electric connection path to a connecting point 31 and a common path to the load 3 from the connecting point 31. The power accumulation part 11 supplies power to the load 3 via a second electric connection path to the connecting point 31 and the common path. The fuel battery power generation part 9 is connected to the common path. The power accumulation part 11 starts autonomous operation by paralleling off the commercial power supply source 5 by using switches MS25, 27 when the parallel-off condition of power interruption or the like of the commercial power supply source 5 is satisfied. The fuel battery power generation part 9 generates power using the power accumulation part 11 as a reference power supply.

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