Abstract: With the transformation of the energy structure, rural power grids have evolved into new local power systems dominated by distributed renewable energy. To enhance the system's autonomous frequency regulation capability and the matching between power generation and consumption, virtual inertia support from wind turbines and energy storage is taken into consideration, and a system inertia demand model is developed. A flexible backup model for wind turbines is subsequently established based on the differences in load peak and valley characteristics, which are influenced by the level of wind curtailment. An energy management model is also developed, considering the light demand characteristics during crop growth and the transfer of supplemental lighting load. Finally, an optimization dispatch model for independent rural microgrids is constructed, incorporating system inertia demand constraints, wind turbine flexible backup constraints, and agricultural lighting load transfer constraints. A case study is conducted with the independent rural microgrid in China as the research context. The results indicate that the model developed in this paper can effectively promote the integration of renewable energy and reduce system operating costs.