1Modeling of DFIG-based Wind Farms for SSR Analysis

Abstract—This paper presents a model for analysis and simu-lation of subsynchronous resonance (SSR) in series compensated systems with Doubly Fed Induction Generator (DFIG) based wind farms. The model is used to analyze the induction generator effect (IGE) and torsional interaction in such systems. A test system based on the IEEE first benchmark model is considered for the analysis. The effect of three factors namely: i) series compensation level, ii) wind speed, and iii) current loop gains on the IGE and TI are studied. Small signal (eigenvalue) analysis is conducted to assess the damping of network and torsional modes followed by dynamic (time domain) simulations