Calculation of Voltage Harmonic Distortion Caused by Small Non-linear Loads

摘要

This paper presents an accurate method to evaluate the harmonic distortion in distribution systems. This method overcomes most of the drawbacks of the traditional methods. The main idea of the proposed method is to represent the harmonic effects of small non-linear loads by an equivalent large load. A case study is presented in the paper to ilustrate the proposed method. The total harmonic distortion factor is evaluated at different busses of a distribution system using the proposed method. The results are then compared to those obtained using the traditional methods.