| 摘要 |
PROBLEM TO BE SOLVED: To provide a power supply system which can grasp the time capable of dealing with power outage, upon occurrence of power outage.SOLUTION: Control means 5 includes calculation means 52 for recording the demand statistic data d1 where the demand electric energy in a facility A is arranged in time series, and the purchase power statistical data d2 where the electric energy purchased from a commercial power system 3 is arranged in time series, and calculating the time T capable of dealing with power outage upon occurrence of power outage. When a power storage device 2 is connected with a power line 1 at the time of power outage, and a power generator 4 is not operating, the calculation means 52 subtracts the battery residual amount L of the power storage device 2 based on the demand statistic data d1, determines the time until the battery residual amount L goes zero as the time T capable of dealing with power outage, and when the power generator 4 is operating, subtracts the battery residual amount L based on the purchase power statistical data d2, determines the time until the battery residual amount L goes zero as the time T capable of dealing with power outage, and then display means 7 displays the time T capable of dealing with power outage.SELECTED DRAWING: Figure 1 |
