Power distribution network toughness recovery emergency scheduling method and system based on photovoltaic access

The invention discloses a power distribution network toughness recovery emergency scheduling method based on photovoltaic access, and the method comprises the steps: obtaining a toughness index value of a photovoltaic power access node position through constructing a toughness evaluation index system; comprehensive index values are calculated by comprehensively judging the index values, and the comprehensive index values are judged and divided, so that reasonable scheduling is effectively carried out aiming at power distribution network nodes with different toughness capacities; according to scheduling of different toughness, economic optimization scheduling is carried out on an access node with relatively good toughness, and for a node with relatively poor toughness, the network loss degree is mainly considered as a target, so that the operation efficiency and stability of a power distribution network are improved; the invention correspondingly provides a power distribution network toughness recovery emergen