Network topology based simulation modeling of power system protection

A topology based modeling method is proposed for power system relay protection simulation. In this method, the tripping breakers information can be established automatically for the main protection, local backup protection and the remote backup protection systems of equipments of an electrical network according to the protection coordination and the network topology, and the tripping switch information table of protection can be automatically adapted to different network structures. With this method, the visible graphical simulation modeling of relay protection is easy to implement. And this method has been successfully applied to a large-scale hydropower plant simulator.