| 摘要 |
PROBLEM TO BE SOLVED: To solve such problems that, though measurement for buying and saling electric energy is required when a photovoltaic power generating system is connected to a small-scale load capable of applying a flat rate lighting contract, equipment of a watt-hour meter requires a large economical load. SOLUTION: A control part 20 of a system interconnection type inverter 2 having the small-scale load 30 capable of applying the flat rate lighting contract, a solar cell 1, a power converter 201 for converting the dc power outputted from the solar cell into the ac power, a first connection part 205 for connecting the load 30, and a second connection part 206 for connecting to a system 5, measures the power flowing in from the system 5 and the power flowing out to the system 5 individually by a power measuring part 203, records the measurement results individually in a memory, and displays information on the measured inflow power and outflow power on a display part 204. |
