| 摘要 |
PROBLEM TO BE SOLVED: To provide a distributed power supply system capable of accurately determining a mounting direction of a current detection device, and to provide a diagnosis method thereof.SOLUTION: A U-phase line 4a, a V-phase line 4b and an N-phase line 4c of a distributed power supply system connect a commercial power source and load components 5a and 5b, respectively. On the U-phase line 4a and the V-phase line 4b, a first current sensor 21a and a second current sensor 21b are provided between a trunk breaker 3 and the load components 5a and 5b, respectively. In the case where only one of the first current sensor 21a and the second current sensor 21b detects a current from the side of the load components 5a and 5b to the commercial power source while stopping operating a power generation device 8, a cooling water warming heater 12 connected to the U-phase line 4a or the V-phase line 4b where the current to the commercial power source is detected, is started and in the case where a current detected after the start is increased more than the current before the start, it is determined that a mounting direction of the first current sensor 21a or the second current sensor 21b is reverse. |
