A method and system for oscillation damping for a heterogeneous wind farm

Abstract

This application proposes a method and system for suppressing oscillations in heterogeneous wind farms. The method includes: real-time acquisition of voltage amplitude deviation and voltage phase angle deviation values ​​at the grid connection point in the heterogeneous wind farm; inputting the voltage amplitude deviation and voltage phase angle deviation values ​​at the grid connection point into a pre-established damping controller to obtain an active power adjustment value for suppressing oscillations in the heterogeneous wind farm; inputting the active power adjustment value into the active power control loop of each wind turbine unit in the heterogeneous wind farm to adjust the active power output of each wind turbine unit in the heterogeneous wind farm, thereby achieving low-frequency oscillation suppression in the heterogeneous wind farm; wherein, the heterogeneous wind farm includes: grid-connected wind turbine units and grid-connected wind turbine units. The technical solution proposed in this application can stably suppress low-frequency oscillations in heterogeneous wind farms under different grid strengths, ensuring the safe and stable operation of the wind farm and the power grid.

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