Determination and Performance Analysis of the Norton Equivalent Models for Fluorescents and LED Recessed Lightings

Abstract

The proliferation of low-power consumption equipment based on power electronics, such as LED and fluorescent lightings, has caused changes in the waveform of voltage and current signals in electrical networks. For this reason, several studies approach the modeling of these lighting loads to analyze their impact on the harmonic distortion in low-voltage networks. Currently, the massive penetration of LED lighting in replacement of fluorescent technology is evident; however, fluorescent lighting remains as a representative load in the energy consumption of buildings. Therefore, this paper presents the modeling of both types of lighting loads from two Norton equivalent models, the coupled matrix model and the decoupled matrix model, used to estimate the distortion of the current signal, the power consumption of the luminaires, and an escalation analysis of the models. In addition, 10 specific voltage signals were used to validate these models, thus presenting active power errors, NRMSE estimation percentages, and an escalation analysis of the models from the THDi indices.