Analysis of harmonics and voltage fluctuation using different models of Arc furnace

In recent years, the rapid growth of nonlinear loads, such as power electronic control equipment and arc furnace, is creating harmonics and voltage distortion problems in power networks. In this paper we will present a comparative study of different arc furnace models for harmonics and voltage distortion analysis. Six different models of arc furnace represented in time domain and frequency domain are used for the analysis. Analysis of harmonics of arc voltage and current and voltage distortion has been conducted by different arc furnace models. Arc furnace models are implemented in MATLAB and tested on a prototype system. The results have demonstrated that the accuracy of different arc furnace models is different for analysis of harmonics and voltage fluctuation.