Modelagem e simulação da proteção diferencial para transformadores de potência no software ATP

Abstract

The increase in transmission and distribution system leads to an increase in the complexity of the SEP, which makes it difficult to make coordination studies and, in some cases, makes it impossible to rate the sensitivity, selectivity and coordination of the system quickly. It is also noted the need for a tool that allows students of the protection of electrical systems to simulate the occurrence of faults and the performance of the protections. The target of this work is to present the ATPDraw program as a tool that allows in a simple and objective way to simulate complex systems allowing the use of this one to rate the protection in systems of greater complexity. In addition, demonstrate the tool as useful for conducting studies in the academic environment for basic learning about the protection of electrical systems. For this, will be made a model in ATPDraw of the transformer and the associated differential protection, in addition to the CTs of each phase with its saturation curve. The results demonstrate the compatibility of this tool with the behavior of the components and demonstrates the advantages of developing other applications and studies with the ATP in order to make its be used and taught in the academic and business environment. In addition, we can also observe the performance of the differential protection and its importance.