Analysis of Response Characteristics of Doubly Fed Induction Generator in Electromechanical Oscillation

Abstract

As the Doubly Fed Induction Generator (DFIG) is connected to the power system, the electromechanical oscillation characteristics of the traditional power system have changed. To study the influence of DFIG access on the low-frequency oscillation of traditional power systems, this paper uses open-loop analysis to separate the influence of DFIG, establishes DFIG and traditional power system open-loop model, and uses frequency domain analysis to analyze DFIG access to the traditional system. The impact of open-loop is analyzed by analyzing the influence of DFIG power loop parameters and access location and access on the electromechanical oscillation response characteristics of traditional systems. The feasibility of the method is verified by simulation, which can reflect the DFIG response to the rest of the system's electromechanical oscillations. This method can be used to analyze the reasonable parameter settings, access capacity, and access mode of DFIG.