Street lamps aggregation analysis through IEC 61000-3-6 approach

The use of high-power LEDs for street lighting is growing continuously due to their greater energy efficiency, robustness, long life and light control. The possibly higher harmonic emission from these lamps has been mentioned however as a drawback. Not only is it important to know the individual harmonic emission of every device connected to the PCC, but it is also necessary to know the impact after the harmonic aggregation of those devices. In this paper, the harmonic emission of HPS lamps with electronic ballasts and LED street lamps has been studied. Different approaches on estimating the emission from multiple lamps are compared. The approach according to IEC 61000-3-6 has been compared with measurements, showing the limitations of that approach.