Wind power generation system, wind power generation control device and wind power generation control method

摘要

For reducing a storage capacity of a storage battery system and an installation cost at a constant-output control type of wind power plant, a wind power generation control device sets as a planned generation power value PT: an average wind generated power value PA, when a current battery charging rate SOC of the storage battery system is within the range of the upper and lower limit values of the targeted battery charging rate range SOCT (S12); a value obtained by multiplying a positive constant greater than 1 to the said PA, when the current battery charging rate SOC is above the upper limit value of the said SOCT (S14): and a value obtained by multiplying a positive constant less than 1 to the said PA, when the current battery charging rate SOC is below the lower limit value of the said SOCT (S15).

主权项

1. A wind power generation system comprising:
a wind power generator group composed of a plurality of wind power generators; a storage battery system composed of a plurality of batteries; and a wind power generation control device that performs a control so that a system generated power, obtained by adding a wind generated power generated by the wind power generator group and a charge-discharge power charged and discharged by the storage battery system, falls within an allowable range of a planned generation power value set in advance, over the charge-discharge power,wherein the wind power generation control device comprises:
an average value operation unit that calculates an average value of the wind generated power generated by the wind power generator group during a first control period before the present time; a targeted SOC (State Of Charge) range operation unit that calculates a targeted battery charging rate range of the storage battery system; and a planned generation power value operation unit that calculates a planned generation power value for a second control period which is set later than the present time, based on the average value of the wind generated power calculated by the average value operation unit,wherein the planned generation power value operation unit sets as the planned generation power value:
the average value of the wind generated power, when a current battery charging rate of the storage battery system is in the range of the upper and lower limit values of the targeted battery charging rate range; a value obtained by multiplying a positive constant greater than 1 to the average value of the wind generated power, when the current battery charging rate of the storage battery system is above the upper limit value of the targeted battery charging rate range; and a value obtained by multiplying a positive constant less than 1 to the average value of the wind generated power, when the current battery charging rate of the storage battery system is below the lower limit value of the targeted battery charging rate range.