SOLAR POWER GENERATION SYSTEM WITH STORAGE BATTERY AND METHOD FOR CONTROLLING THE SAME

To provide a solar power generation system with a storage battery capable of reducing purchase power charge by focusing on distribution balance of output effective power and output reactive power of a power converter.SOLUTION: A solar power generation system 10 with a storage battery includes: power generation facilities (solar power generation facilities 13) utilizing solar energy; storage battery facilities 14 for mitigating variations in a power generation output from the power generation facilities; and a control device 15 for controlling the power generation output from the power generation facilities and the storage battery facilities 14. The control device 15 includes: a peak cut control unit 16 for performing peak cut control of power received from a power system by adjusting output effective power of the power conversion device in the storage battery facilities 14; a power factor improvement control unit 17 for adjusting output reactive power in the power generation facilities and storage battery facilities 14 to perform power factor improvement control; and a peak cut target value determination unit 18 for determining a peak cut target value that minimizes power charge cost by the peak cut control and the power factor improvement control.SELECTED DRAWING: Figure 1 【課題】電力変換器の出力有効電力と出力無効電力の配分バランスに着目し、買電電力料金を低減することができる蓄電池併設太陽光発電システムを提供する。【解決手段】蓄電池併設太陽光発電システム１０は、太陽光エネルギを利用した発電設備（太陽光発電設備１３）と、発電設備の発電出力の変動を緩和するための蓄電池設備１４と、発電設備と蓄電池設備１４の発電出力を制御する制御装置１５と、を備え、制御装置１５は、蓄電池設備１４における電力変換装置の出力有効電力を調整して、電力系統から受ける電力のピークカット制御をするピークカット制御部１６と、発電設備と蓄電池設備１４における出力無効電力を調整して力率改善制御をする力率改善制御部１７と、ピークカット制御と力率改善制御により、電力料金コストを最小化するピークカット目標値を決定するピークカット目標値決定部１８と、を有する。【選択図】図１