ABSTRACT
Resonance is an important factor affecting the system harmonic levels. A load-generated harmonic can be magnified many times due to harmonic resonance. A harmonic resonance without application of shunt capacitor banks can practically be ignored in industrial systems, but not so in the distribution and transmission systems. The resistance of the inductor was ignored in parallel resonant circuit. While the capacitor may be treated as an ideal capacitor, the inductor must be modeled with some practical value of resistance. Harmonic resonance is described in the previous section, and it occurs at a certain harmonic or harmonics. When shunt capacitors are connected for power factor improvement, voltage support, or reactive power compensation, these act in parallel with the system impedance. The resonance problem in power systems is a potential problem and a serious one. There are many documented cases of resonance, component failures, and plant shutdowns.
