Wind-power generation system and control method for the same
AssigneeMitsubishi Heavy Industries, Ltd.
InventorAkira Yasugi
Life of this patent
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Abstract
An object is to reduce a decrease in the amount of electric power supplied due to the occurrence of a gust of wind during an output-power limiting operation. Provided is a wind-power generation system in which, in the case where an output-power limiting operation for decreasing the grid frequency is performed, when at least one wind turbine is disconnected depending on the wind conditions, the output power of the other wind turbines in operation is increased.
Claims13
A wind-power generation system including a plurality of wind turbines, in which an output power of each of the plurality of wind turbines is supplied to a utility grid through a common interconnection point,
- wherein the wind-power generation system is structured to operate in a normal operation and an output-power limiting operation in which a rotational speed of each of the plurality of wind turbines is higher than that in the normal operation, and
- in a case where the output-power limiting operation for decreasing grid frequency is performed, when at least one of the wind turbines is disconnected depending on wind conditions, output powers of other wind turbines in operation are increased.
A control method for a wind-power generation system including a plurality of wind turbines, in which an output power of the plurality of wind turbines is supplied to a utility grid through a common interconnection point,
- wherein the wind-power generation system is structured to operate in a normal operation and an output-power limiting operation in which a rotational speed of each of the plurality of wind turbines is higher than that in the normal operation, and
- in a case where the output-power limiting operation for decreasing a grid frequency is performed, when at least one of the wind turbines is disconnected depending on wind conditions, the output power of other wind turbines in operation is increased.
A control method for a wind-power generation system, comprising the steps of:
- providing a plurality of wind turbines in which an output power of individual wind turbines is supplied to a utility grid through a common interconnection point;
- and
- operating the wind-power generation system in a normal operation or an output-power limiting operation for decreasing a grid frequency in which a rotational speed of each of the wind turbines is higher than that in the normal operation;
- wherein when the output-power limiting operation is performed, at least one of the wind turbines forecasted to receive a wind having a wind speed higher than or equal to a preset first threshold value is disconnected, and output power of other wind turbines in operation is increased to compensate for an output power reduction due to a disconnection of the at least one of the wind turbines.
Dependencies are inferred from the claim text.