Can resonance occur in power systems?

Abstract: Harmonic resonance occurs in a power system when the power system natural frequency corresponds to the frequency of a source of harmonic current. This paper studies a real case of power system harmonic resonance that resulted in failure of 20-kV capacitor bank fuses.

What is the effect of resonance in power system?

The difference between series and parallel resonance in power system is that series resonance creates a low impedance (draw maximum current in to the system) whereas parallel resonance creates a large impedance which even in the presence of small current can create large harmonic voltage drop and hence cause voltage …

What is the main source of causing resonance in power system?

Electrical resonance occurs in an electric circuit at a particular resonant frequency when the impedances or admittances of circuit elements cancel each other. In some circuits, this happens when the impedance between the input and output of the circuit is almost zero and the transfer function is close to one.

How is resonance in power lines reduced?

Aside from changes in the resonance frequency, the replacement of non-electronic (resistive) loads by electronic loads will also reduce the damping at resonance frequencies.

What is natural frequency of power system?

Natural frequency, also known as eigenfrequency, is the frequency at which a system tends to oscillate in the absence of any driving or damping force. The motion pattern of a system oscillating at its natural frequency is called the normal mode (if all parts of the system move sinusoidally with that same frequency).

Does resonant frequency depend on resistance?

Resonance. Resonance in AC circuits implies a special frequency determined by the values of the resistance , capacitance , and inductance .

What is resonance in an AC circuit discuss the effects of resonance in electrical system?

Electrical resonance occurs in an AC circuit when the effects of the two reactances, which are opposite and equal, cancel each other out as XL = XC. This is because at resonance they are cancelled out. So the total impedance of the series circuit becomes just the value of the resistance and therefore: Z = R.