| 摘要 |
PROBLEM TO BE SOLVED: To improve continuity or stability of power supply to an electric power load in a power supply system comprising a distributed power source including power storage means or power generation means during a power failure in a system power source.SOLUTION: A power supply system comprises: a first distribution system (4-1), a second distribution system (4-2) branched from the first distribution system (4-1) via switching means (switch 6); and a distributed power source (10) connected to the first distribution system and including either at least power storage means (power storage system 12) or power generation means [FC (Fuel Cell cogeneration) system 14]. In power supply from a system power source (5), the switching means is closed and power is supplied from the system power source to the first distribution system and the second distribution system. During a power failure in the system power source or self-sustaining operation of the distributed power source, the switching means is opened, power supply to the second distribution system is stopped, and power is supplied from the distributed power source to the first distribution system. A function limitation of an electric power load (8-3) connected to the second distribution system is performed, and power supply to the second distribution system is continued. |
