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DFIG Multi-time Scale Control Characteristics and Simplified Modeling

With the transformation and upgrading of energy structure, the proportion of doubly fed induction generator (DFIG) installed capacity in the power system will continue to increase and will have an important impact on system stability. For this reason, studying the multi-time scale control characteristics of DFIG and establishing a simplified model of DFIG are of great significance to the stability analysis of the power system. This article will start from the perspective of parameter trajectory sensitivity, and propose a multistage analysis method. Under different simulation events, the time scale is divided according to the response speed of DFIG control, and the characteristics of DFIG multi-time scale control are studied. On this basis, the detailed model of DFIG is simplified. Finally, the correctness of the research and the accuracy of the model built in this paper are verified by simulation comparison.