Efficient immunity testing of smart meter devices in the frequency range 2–150 kHz

Energy networks are subject to considerable disturbing currents in the frequency range of 2-150 kHz, due to insufficient Electromagnetic Compatibility standards, and it is important that smart meter devices exhibit in this frequency range sufficient immunity. It is shown that corresponding immunity tests in frequency domain must utilize small enough frequency spacing since smart meter susceptibilities can be rather narrowband, as is shown by example. It is also pointed out that for efficient testing the use of broadband test pulses provides advantages if compared to single frequency sweeps.