Abstract: To address the issue that grid boundary partitioning in distribution networks with high-penetration distributed wind power may disrupt voltage support links, weaken source-load matching, and increase the risk of reverse power flow across grid boundaries, this paper proposes a grid partitioning method for distribution networks considering reactive power-voltage support and source-load matching degree. First, a reactive power-voltage support correlation index between adjacent power supply units is constructed to guide grid boundaries away from strong support links. Then, a source-load matching index considering wind power output, load demand, and power export pressure is established to characterize the local renewable energy accommodation capability within each grid. On this basis, a multi-objective grid partitioning model is developed with consideration of structural economy, voltage support integrity, and source-load matching performance. The results show that the proposed method can effectively reduce cross-grid cutting of strong voltage support connections, improve source-load coordination within grids, mitigate the risk of reverse power flow across grid boundaries, and enhance the adaptability of grid partitioning results to wind power fluctuation scenarios.