标题：Modeling of DFIG-Based Wind Turbine for Power System Transient Response Analysis in Rotor Speed Control Timescale

作者：Tangwang,Qianyun; Hu,Jiabing; Chang,Yuanshu; Liu, Feng

摘要：Thetransientresponsesandstabilityfollowedbygrid faultsofthemodernpowersystemsexperiencediversechangesand have created concerns, especially for those dominated by doubly fed induction generator (DFIG) based wind turbines (WTs), since the transient characteristics of the DFIG-based WT are totally different from those of a synchronous generator (SG). To physically understand the transient response and theoretically analyze the transient stability of DFIG-based WT, this paper proposes a magnitude/phase dynamical model with synthetical consideration on the controllers in the rotor speed control timescale (around seconds). The proposed model physically explains the relationship between the imbalanced active power as well as the output active/reactivepowersthemselvesandtheDFIG-basedWT’sinternal voltagevector,whoseformissimilartothatoftheSG.Bycomparing with the SG, the distinctive transient phase characteristics of theDFIG-basedWTareillustrated.Anadditionalphaselimitation isfound,exceedingwhichtheoperationpointdoesnotexist.Based on the proposed model, the transient stability of a simple DFIGbased WT-dominated system is theoretically analyzed, and a new instability phenomenon different from that in an SG-dominated systemisidentified.Furthermore,somekeyfactorsinfluencingthe transient stability are discussed.

发表于：IEEE TRANSACTIONS ON POWER SYSTEMS

发表时间：NOV, 2018