Transformer Equalization based on Non-linear Adaptive Filtering

This paper presents the development and application of nonlinear methodologies for equalizing the frequency responses of instrumentation transformer for access the harmonics in power systems. The concept of supervised equalization is proposed. In order to evaluate the equalization performance, analysis methods like Total Vector Error (TVE) and Mean Square Error (MSE) were used, as well as visual inspection of the frequency response and phase of the equalized voltage transformer models.