Construction of detailed energy function of double‐fed induction generator for small signal stability analysis of power systems with a high penetration of double‐fed induction generator

Abstract

Abstract The integration of high proportion renewable energy not only brings many benefits, but also increases the difficulty of power system stability analysis. One of the reasons for this problem is the unclear internal characteristics of new energy equipment. Therefore, there is an urgent need for a more detailed analysis of the characteristics of new energy equipment. Taking a double‐fed induction generator (DFIG), which has complex operation characteristics and is widely used, as an example, a detailed energy function (DEF) of DFIG for small signal stability analysis is proposed in this paper. This method performs DFIG's internal energy analysis, making the traditional energy structure more comprehensive. On this basis, the internal parameters of DFIG with high sensitivity to stability are obtained, and the damping evaluation index is constructed to evaluate the damping of DFIG. Finally, the proposed model's correctness and method are verified in the 4‐generator 2‐area system.