Sensors, Vol. 24, Pages 2465: The Effects of Supraharmonic Distortion in MV and LV AC Grids

Sensors, Vol. 24, Pages 2465: The Effects of Supraharmonic Distortion in MV and LV AC Grids Sensors doi: 10.3390/s24082465 Authors: Andrea Mariscotti Alessandro Mingotti Since the integration of electronic devices and intelligent electronic devices into the power grid, power quality (PQ) has consistently remained a significant concern for system operators and experts. Maintaining high standards of power quality is crucial to preventing malfunctions and faults in electric assets and connected loads. Recently, PQ studies have shifted their focus to a specific frequency range, previously not considered problematic—the supraharmonic 2 kHz to 150 kHz range. This range is not populated by easily recognizable harmonic components of the 50 Hz to 60 Hz mains fundamental, but by a combination of intentional emissions, switching non-linearities and byproducts, and various types of resonances. This paper aims to provide a detailed analysis of the impact of supraharmonics (SHs) on power network operation and assets, focusing on the most relevant documented negative effects, namely power loss and the heating of grid elements, aging of dielectric materials, failure of medium voltage (MV) cable terminations, and interference with equipment and power line communication (PLC) technology in particular. Under some shareable assumptions, limits are derived and compared to existing ones for harmonic phenomena, providing a clear identification of the primary issues associate...
Source: Sensors - Category: Biotechnology Authors: Tags: Article Source Type: research
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