| 摘要 |
PROBLEM TO BE SOLVED: To surely stop the operation of an inverter and conduct a parallel off from a system thereby prevent a reverse power flow, when the power supply of a distribution line stops, and to conduct a linkage operation while power is being supplied and to conduct an independent operation while power supply is stopped, in the case that a plurality of solar light generation systems are connected to one and the same distribution line. SOLUTION: A distribution transformer station 31, which is one of power controlling systems at the distribution system side, supplies power to a distribution system 48, supplying power and to an identification signal line 12 which transmits information regarding the supply of power. The identification signal line 12 is connected to system status judging means 11 of all the solar light generation system connected to the distribution system 48. When the system state judging means 11 receive, from the identification signal line 12, information that the supply of power is stopped, they stop inverters 34 and open system switches 49, to conduct parallel-off from the distribution system 48 and, at the same time, automatically start an independent operation. |
