Know How – Power Quality (PQ) Measurements in Today’s Electric Infrastructure
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Know How – Power Quality (PQ) Measurements in Today’s Electric Infrastructure

Power quality has found a renewed interest due to changing power generation modes and consumption dynamics. The unprecedented growth in renewable sources at different voltage levels has increased the amount of PQ related issues. Consumption patterns have also seen a wide transformation due to unsynchronized loads added at multiple entry points of the grid and voltage levels. Some examples are electric vehicle (EV) chargers that can require hundreds of kilowatts and a great number of data centers and their related equipment such as heating, ventilation, and air conditioning. In industrial applications, arc furnaces that run by variable frequency drives, switching transformers, etc. not only add a lot of unwanted harmonics to the grid, but are also responsible for voltage dips, swells, transient brownouts, and flicker.
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