Busbar differential protection based on generalized alpha plane

Abstract

This paper presents the analysis of the benefits provided by Generalized Alpha Plane (GAP) to low-impedance busbar differential protection. Its main advantages are the simplicity and the possibility to define several restraint characteristics. In order to do so, the GAP was evaluated for busbar protection using the software ATPDraw, through which a wide variety of fault scenarios in a 230 kV double-bus single-breaker was simulated. The obtained results reveal that the GAP can improve the performance of the traditional differential protection formulation.