Estimación de parámetros eléctricos transitorios de un transformador trifásico utilizando MATLAB-SIMULINK

Abstract

This research work focused on testing an alternative way to obtaining the electrical parameters of the three-phase transformer model from measurements recorded by the protection and measurement equipment associated with the transformer. The potential use of this methodology would estimate the electrical model of three-phase transformers already in operation of an electrical system at facing transitory events. The methodology will reduce time associated with the tests that must be performed on a transformer to obtain its equivalent model, since these tests are usually performed with the transformer de-energized, expensive and specialized test equipment.

There are several studies that show complete transformer models for transient events, which served as the basis to estimate parameters in MATLAB-SIMULINK. Once the effectiveness and reliability of the model in development be proven, it can become a great help for the identification of parameters in new transformers or transformers in operation, with many years of useful life which only basic information is available as approximations to similar equipment; parameters that with the past of the time and operating conditions could have been modified with respect to the values at the moment of the transformer installation.