Transient directional busbar protection scheme for distribution networks

The integration of distributed generation transforms current distribution networks from vertically operated to horizontally operated. This transition leads to problems related to protection coordination. In the future, new protection philosophies should be applied which guarantee the increase of the during-fault distributed generation availability. The paper presents a protection scheme based on fault transient analysis. The effectiveness of the protection principle is tested for a converter-based doubly-fed induction generator wind turbine. Simulation results are carried out for radial test network configuration and conclusions regarding the applicability of the methodology are withdrawn.