ISOLATED OPERATION SYSTEM OF DISTRIBUTED POWER SUPPLY

• Main Authors: SHIMODA EISUKE, YAMANE TOSHIHIRO, NUMATA SHIGEO, MORINO HITOO
• Format: Patent
• Language: English
• Published: 24.09.2009
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; SYSTEMS FOR STORING ELECTRIC ENERGY

PROBLEM TO BE SOLVED: To provide an isolated operation system of a distributed power supply which can maintain supply power quality without causing a short break of the distributed power supply at the time of transiting to isolated operation. SOLUTION: The isolated operation system of the distributed power supply for reducing the burden on a commercial system by load follow-up operation of the distributed power supply equipped with a rotating machine based power generator includes a system fault detection means which outputs a fault detection signal when a fault is detected in the commercial system, a circuit breaker which interrupts power supply from the commercial system when a fault detection signal is input from the system fault detection means, a state detection means which outputs a circuit breaker state signal when interruption state of the circuit breaker is detected, and an electricity accumulating unit which compensates for variation in load after power supply from the commercial system is interrupted by the circuit breaker until the rotating machine based power generator transits to the operation of isolated operation control by starting power supply when a circuit breaker state signal is inputted. COPYRIGHT: (C)2009,JPO&INPIT