With increasing penetration of doubly fed induction generator(DFIG) based wind power into power grid, its effects on transient stability of synchronous generators become extremely prominent. In this paper, transient stability of modified single machine infinite bus(SMIB) system with DFIG-based wind farm integrated was studied. Firstly, an equivalent model of DFIG with low voltage ride through capabilitywas proposed considering transient characteristics of DFIG during three-phase short-circuit fault. And the...