Designing of power system protection using graph theory

Abstract

Throughout the history of power system protection, improvements have continuously been made to most aspects of the protection system. However the choice of the protection function and the type selection are still carried out by specialist based on their personal experience. Since the applied design methods are strongly impacted by the personal philosophy of the designer, most of the existing protection system are not always optimal. In this paper a new method will be presented which is based on exact rules of the graph theory to achieve (at least near to) an optimum protection system for an arbitrary network configuration.