POWER-SUPPLY SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide a low-cost power-supply system in which the electric power measurement can be performed with high accuracy.SOLUTION: A solar light power generation system 1 comprises: PCS3 which converts DC power supplied from a solar power generation panel 2 into AC power for cooperation with an AC power system 6; a measurement circuit 15 which measures an electric power on a cable way 8 connecting between the AC power system 6 and the PCS3; and a measurement device 4 having a power-source part 18 for providing the measurement circuit 15 with an electric power required for operating the measurement circuit 15. The PCS3 includes a control power-source part 24 which outputs DC power required for controlling the PCS3. The power-source part 18 acquires DC power output by the control power-source part 24, and produces an electric power required for operating the measurement circuit 15.SELECTED DRAWING: Figure 2