An improved CT testing method for enhancing protective relay performance

The paper reviews traditional CT testing and its inability to provide critical data necessary for relay transient response analysis. It then introduces a method for making improved field testing resulting in significantly more information about the CT, its performance in the given application and at the actual burden. Use of this expanded test data makes further analysis possible for transient simulation and improved network simulation based on the expanded CT model introduced. This provides key insights to enhancing the protective relay system in both performance and security.