The present invention relates to a method for the maintenance of a wind power generation farm and, more specifically, to a method for the maintenance of a wind power generation farm including a step of receiving weather information of the wind power generation farm; a step of analyzing the received weather information on a monthly basis and a daily basis, or an hourly basis; a step of computing a timing of the maintenance of the wind power generation farm used on the analyzed information; and a step of providing the computed timing of the maintenance of the wind power generation farm for a user. In the step of computing the timing of the maintenance of the wind power generation farm, the timing when a wind speed is a reference speed or slower is computed based on the weather information analyzed by the monthly basis and the daily basis, or the hourly basis.
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