| 摘要 |
PURPOSE: To provide a synchronization system of non-utility generation equipment which holds a required precision at the time of system interconnection and enables attainment of high-speed synchronization at the time of emergency. CONSTITUTION: In non-utility generation equipment having two generators 31 and 32 and interconnected with a commercial power source 21, a synchronous operation part 10 is divided into an ordinary time mode 11A and an emergency time mode 11B. An allowable frequency difference is set to be about 0.15Hz in the ordinary time mode and about 0.3Hz in the emergency time mode by an al1owable frequency difference setting circuit 12 and the switchover is conducted automatically. |
