| 摘要 |
PURPOSE:To obtain a highly economic space saving power supply which can flexibly accommodate extension of load system by a constitution wherein power converters are distributed and connected with a high quality power supply network to be linked each other and a central control means is provided. CONSTITUTION:A central controller 41 determines effective and reactive powers(demand) to be fed from a high quality power supply network 31 based on information relevant to the conditions of loads 21-24, decides effective and reactive powers to be born by each UPS based on information relevant to the conditions of uninterruptible power supplies UPS 11-14, and provides the linkage controller for the UPS 11-14 with a throw-in parallel off command or control parameters corresponding to demand, e.g. lead power factor operation for compensating the reactive power. Upon interruption or instantaneous voltage drop of first power supply, i.e., commercial power supply, power supply to the high quality power supply network 31 is sustained through a second power supply, i.e., a battery. |
