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This paper reviews the research of dynamic equivalent modeling for the wind farm in details. It analyzes the characteristic and application status for the single machine representation method and multi machine representation method. The current research has carried out a lot of works in the field of dynamic equivalent modeling for the doubly-fed wind farm and has made much valuable progress. However. with the increasing of grid connected wind power capacity. in order to meet the demand of the analysis for the dynamic characteristic. the research of dynamic equivalent modeling for the wind farm confronts the following new problem: 1) How to select the classification index for the unit so as to reflect the dynamic operational characteristic of wind turbine generator more comprehensively. 2) How to select the appropriate algorithm of classification for the wind turbine so as to improve the rationality of dynamic classification. 3) How to further simplify the equivalent wind farm of multi machine representation to single machine representation while guarantee the equivalent precision. 962 J. Zou et al. Renewable and Sustainable Energy Reviews 40 (2014) 956–۹۶۳ In order to solve the continual new problem. it is necessary to research and explore the dynamic equivalent method for the wind farm more deeply. This has great significance to the development of dynamic equivalent modeling technology for the wind farm.
