Three-phase voltage events classification algorithm based on an adaptive threshold

Abstract

A new algorithm for voltage event classification based on predefined models is proposed in this paper. In particular, this proposal is designed for the ABC classification criterion and, unlike other algorithms based in the same criterion, this is based on adaptive classification thresholds that allows to reduce the classification errors in the presence of changes in the grid parameters (impedance, prefault voltage, etc.). It is demonstrated that the proposal presents a better performance than other algorithms described in the specific bibliography when are tested with real voltage events that differ from ideal three-phase model. A comprehensive study of algorithm classification errors considering several disturbances and experimental results are also presented.