Constraint set reduction method and system for power system optimization problem

The invention relates to the technical field of electric power systems, and discloses a constraint set reduction method and system for an electric power system optimization problem, and the method comprises the steps: determining a to-be-reduced constraint set from a preset optimization problem of an electric power system, taking a participation variable of each to-be-reduced constraint as a node, and carrying out the connection according to a participation variable order relation, the method comprises the following steps: constructing a directed order diagram, carrying out node topological sorting on all nodes by using the in-degree size of each node in the directed order diagram, traversing each node in the directed order diagram according to a node topological sorting result, carrying out redundant edge elimination processing, and carrying out constraint reduction on a constraint set to be reduced according to a redundant edge elimination processing result, therefore, the relation between problem constrain