Forced power oscillations in the power system are likely to trigger a wide range of power fluctuations.When new energy such as wind power is connected to the power grid,the fluctuation of output power is random.When the power fluctuation causes the forced oscillation in the system,the oscillation will also show random characteristics and it is difficult to locate the disturbance source.Therefore,a method of locating forced oscillation disturbance source caused by wind farm is proposed.The method uses the oscillation bispectrum to obtain the center frequency and obtains the initial phase at the oscillation center frequency by wavelet transform.According to this,the disturbance source can be located by the energy function.The actual example verifies the feasibility and effectiveness of the proposed method.