Quantitative Evaluation Method for Wind Farm Equivalent Model Considering Multi-Stage Response Characteristics

To evaluate the effectiveness of equivalent model for wind farms, a validity evaluation method based on waveform similarity evaluation and numerical evaluation is proposed. This method comprehensively quantifies the indicators of the equivalent value model at different fault stages from two aspects: waveform evaluation and numerical evaluation. Firstly, propose the process and indicator calculation method for equivalent effectiveness evaluation. Secondly, a method for dividing the fault stage is proposed, which divides the fault stage into four stages: initial fault stage, steady-state fault, fault removal steady state, and restoration steady state. Then evaluate the equivalent effectiveness of the wind farm through practical cases. The proposed method can scientifically and comprehensively evaluate the effectiveness of equivalent model, providing a basis for the correction of equivalent model in engineering practice and the improvement of equivalent accuracy in wind farms.