6 Benefits are described here:
In an AC distribution system, the maximum active power is transmitted to a load when voltage and current are undistorted and in phase.
The presence of power harmonics in electrical systems means that current and voltage are distorted and deviate from sinusoidal waveforms.
Re active energy and power harmonics explained with a car
Are you a driver? I am sure yes, therefore you will understand power harmonics right away
Imagine a straight road, flat, a perfectly smooth surface, a constant speed. Your car works well, consumes as little as possible, and can run indefinitely.
It’s like an electrical grid with a constant power without harmonics.
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