Distorsion supraharmonique dans les réseaux MT et BT - Quatre effets négatifs documentés et l'écart des limites
Four documented negative effects of supraharmonic distortion (2–150 kHz) on MV and LV distribution networks: power loss and heating from skin effect, dielectric material aging at accelerated stress cycle rates, MV cable termination failures from combined dielectric stress and local heating, and PLC interference in smart metering and demand response systems. Constatation clé: MV/LV transformer transfer ratio is 0.5–3.0 — some supraharmonic components are amplified crossing from MV to LV. Strong correlation measured at substations 16 km l'un de l'autre. No planning or compatibility limits currently exist above 9 kHz.
