Partition division method and system for county power distribution network with high proportion of clean energy

The invention discloses a high-proportion clean energy county power distribution network partition division method and system, and the method comprises the steps: obtaining the annual operation data of distributed photovoltaic and load resources in a typical region and an actual power distribution system topological structure, a county power distribution network control structure and a safe operation control requirement are determined according to the annual operation data and an actual power distribution system topological structure; establishing a comprehensive index system considering a comprehensive voltage safety domain index, a modularity index and a comprehensive regional autonomous capability index according to a county power distribution network control structure and a safe operation control demand; determining a target function and constraint conditions according to the comprehensive index system to construct a region division mathematical model; and performing optimization solution on the region di