There is no fixed relationship between harmonics and fundamental waves, and their proportions are different. For the same equipment, the fundamental wave is basically higher than the harmonic wave. However, when there is a capacitive or capacitive load, the relationship between them cannot be determined.

For the power system with pure capacitance compensation, when resonance occurs, the harmonics of the system will be amplified to ten times or even dozens of times, and at this time, the harmonics may exceed the fundamental wave, or even several times the fundamental wave. Therefore, it is very dangerous to use pure capacitance as compensation in power systems with harmonics.