The establishment of large-scale wind power bases makes large wind power capacity, long-distance transport inevitable. The wind power passing through a series capacitor compensated line may cause induction generator effect (IGE) issues. This paper establishes a doubly-fed wind power system model to analyze the factors that influence the induction generator effect. Complex torque coefficient method is used to calculate the electrical damping at different series compensation, transmission line resistance and wind speed. The results show that the increase of series compensation and the decrease of wind speed and transmission line resistance can increase electrical negative damping. When the electrical negative damping is greater than the stator and the equivalent resistance of the transmission system, it will lead to continued divergence line current oscillations, which produces the induction generator effect.