Control method and device for reducing vibration of wind generating set tower

The invention discloses a control method and device for reducing vibration of a wind generating set tower. The method comprises the steps that 1, the tower inherent frequency is obtained; 2, accordingto the tower inherent frequency, the resonance rotating speed is further obtained, and a static rotating speed forbidden zone and a dynamic rotating speed forbidden zone are designed according to thevibration avoiding principle; 3, the practical rotating speed of fan operation is measured, the measured practical rotating speed is compared with the boundary of the dynamic rotating speed forbiddenzone, and the fan rotating speed is controlled. Tower vibration can be reduced, the load can be reduced, power generation production loss can be reduced as far as possible, and compromise of two purposes of fan control is achieved. 本发明公开了种减小风力发电机组塔架振动的控制方法及装置，包含：S1，获取塔架固有频率；S2，根据塔架固有频率，进步得到共振转速，并根据避振原则设计静态转速禁区设计动态转速禁区；S3，测量风机运行的实际转速，将测量的实际转速与动态转速禁区边界进行比较，控制风机转速。本发明既可减小塔架振动，降低载荷，又可尽量减少发电量损失，实现风机控制两个目标的折中。