| 摘要 |
In a solar power generation system provided by the invention, a power compensation amount calculator (113) is installed for calculating a power amount (Q) used for restraining the voltage alternation with a synthesizing output current (I) of a plurality of solar power generation devices (11-1i), the ouput voltage (V1) and output current (I1) of each power transformer (112), and the voltage (Vs) of interconnection point (3) between the power system. In the power compensation amount calculator, a mechanism (1133) which is used for calculating the voltage of interconnection point with the power system is provided. Furthermore the control parameter (alpha) calculated based on the product between the altenation amount (deltaP) of effective power (P) of synthesized power generation output of solar power generation device and the alternation amount (deltaVs) of voltage of interconnection point are adopted, and furthermore the effective power (P1) of solar power generation device (110) is adopted for calculating the non-effective power instruction amount (Q) which is used for minimizing the voltage alternation. Hereon, a dead region (1135) is installed in the detection value of alternation amount (deltaP). Furthermore at the state that the alternation amount (deltaP) of synthesized power generation output of solar power generation device is below the threshold, the alternation instruction (deltaP1) of effective power is transmitted to a power controller (114). The alternation instruction is stopped at the state that the alternation amount of calculated control parameter (alpha) is lower than the threshold. |
