Setting method on the optimal reclosing time for a permanent fault based on network dynamic variables

Based on structure-preserving Topological Energy Function for a multi-machine power system, the feature of line transient energy distributing over a network after a transient fault was analyzed in the paper. Setting method on reclosing time for a permanent fault was proposed, which is based on network dynamic variables. The method can improve transient stability and damp the interconnected power system oscillation. Simulations with a real inter-connected power system were performed to verify the applicability of the method proposed.