Abstract
The energy production from the renewable energy sources increases rapidly. Many renewable power plants use high switching frequency power converters for the network connection and therefore cause the voltage and current distortion in the frequency range over 2 kHz (so-called “supraharmonics”) in electrical networks. Supraharmonics can affect energy metering and can disturb network operation. Long-term measurements of supraharmonics in a real MV/LV electrical network in Germany are described in the paper. Measurement results with respect to the influence of renewable energy sources on the supraharmonic distortion in the network under study are presented and analyzed in the paper.
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