The small signal analysis method is widely used in the stability analysis of power systems, and it is still necessary to analyze and study the small signal stability of power systems with "double high" characteristics. To address grid-connected instability in integrated wind-storage hybrid systems, this study presents the small-signal modeling for the wind-energy storage hybrid systems, utilizing mathematical representations of the doubly fed induction generator (DFIG) and the battery energy storage system (BESS). The research investigates the influence of phase-locked loop (PLL) control parameters on system damping. The results indicate that reducing either the PLL proportionality coefficient or the integration coefficient can augment system damping, thereby enhancing overall system stability.