Wind power station equivalent modeling method of large-scale wind power concentration access power grid

The invention discloses a wind power station equivalent modeling method of a large-scale wind power concentration access power grid. The method comprises the following steps: based on the electrical distance between all wind power station entry points of access power grid, topology distribution, model and control mode of a wind generator in the field, adopting a coherent generator groups identification method to determine the coherent wind generator group; enabling the same coherent generator group to be equivalent as a wind generator group; adopting a weighing equivalent parameter polymerizing method to resolve all the dynamic electric parameters of the equivalent wind generator group, wherein the parameters are equivalent as a form of equivalent impedance connected the equivalent machine in series according to the static equivalence theory; resolving the relative static parameters; and based on the obtained wind power station equivalent form to develop and realize wind power stationmodeling in a PSD-BPA simulation platform. The method solves the problem of the wind power station equivalent modeling in the prior art, and provides the simulation tool for operation mode analysis and scheduling control of the power grid.