Supra-Harmonic Band Patterns in Smart Grid

This article proposes a new approach to investigate the effects of the different character LED lamps supplied by the realtime three-phase power system. The paper aims to the origins effects of high frequency supra-harmonics (SH) components on the power system in the frequency range 0-150 kHz. The proposed method, presented in this article considered appropriate for indicating the source of supra-harmonic emission bands regarding system loads, instruments and Power Line Communication (PLC) systems.