| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a self-sustained operation system of distributed power supply which suppresses power fluctuation of a power supply system in the event of power failure and supplies power continuously longer than conventional to a load in a self-sustained range, even if abnormal state of a commercial system continues for a long time. <P>SOLUTION: The self-sustained operation system of a self-sustained distributed power supply includes a system abnormality detection unit for detecting commercial system abnormality and reducing power supply from a commercial system, a first power conversion unit for system interconnecting with the commercial system when it is normal, compensating the load variation in the power supply system of the self-sustained distributed power supply by using first and second storage batteries, and supplying an AC power subjected to constant voltage constant frequency control to the power supply system by using the power of the first storage battery when the commercial system is abnormal, an emergency generator being actuated when the commercial system is abnormal and supplying emergency power to the power supply system by system interconnecting with the first power conversion unit, a second power conversion unit for compensating the load variation of the power supply system by using the second storage battery, and a natural energy generator for supplying power of natural energy power generation to the power supply system. <P>COPYRIGHT: (C)2013,JPO&INPIT |
