POWER STORAGE SYSTEM AND PHOTOVOLTAIC POWER GENERATION SYSTEM

摘要

PROBLEM TO BE SOLVED: To exhibit effects for an increase in quantity of electric power selling, dissolution of power shortage in the evening, and a loss of the opportunities of selling/buying of surplus power resulting from suppression of output.SOLUTION: A photovoltaic power generation system comprises: a solar battery 1; a power conditioner (PCS) 20; and a power storage system 10. The power storage system 10 has: a storage battery 15 for storing DC power of the solar battery 1; a converter 14 for converting the DC power into a predetermined DC power to charge the storage battery 15; a switch 16 for discharging DC power stored in the storage battery 15; a diode 17 for leading the DC power discharged by the switch 16 to a PCS 20; sensors 11, 12 for detecting input power to the PCS 20 to output detection signals; and a control part 13 for controlling the converter 14 and the switch 16 based on the detection signals.SELECTED DRAWING: Figure 1