With the series dynamic braking resistor (SDBR) applied to assist the low-voltage ride-through (LVRT) of the doubly-fed induction generator (DFIG), its fixed resistance value fails to achieve satisfactory LVRT performances under different fault scenarios. In this paper, a novel dual SDBR scheme is designed to adapt to different scenarios and achieve optimal overall LVRT performance. Two different resistance values of the SDBR are selected and applied separately based on switching criterions considering voltage drop depth. With this scheme, the large SDBR resistance is applied under comparatively severe voltage drops to limit the inrush stator current, while the small SDBR resistance is applied under comparatively minor voltage drops to support the grid frequency during the LVRT. Feasibility and effectiveness of the dual SDBR scheme is verified based on simulation results of a DFIG-integrated power system.