Views:0 Author:Site Editor Publish Time: 2018-04-26 Origin:Site
3 the existence of harmonic current.
It is also possible to connect to the thyristor device of the power network, which objectively plays the role of a high-order harmonic generator, which will cause the waveform distortion of the circuit voltage and current. The existence of harmonic current often makes the capacitor produce abnormal sound, and when it is serious, it causes the capacitor to expand, which is the third reason that causes the capacitor to explode. The main reason for this is that the high order harmonic current is superimposed on the fundamental current, which increases the total current of the capacitor and causes a parallel resonance between the reactance of the system and the capacitive reactance of the capacitor. The current flowing into the capacitor is multiplied by three times) the capacitor has a local series resonance to a higher harmonic, which causes overload.
In order to prevent the chip capacitance from bursting, a hollow reactor can be connected in series in each phase of the compensating capacitor bank to limit the current. The synthetic reactance of the capacitor circuit becomes inductive reactance for the high order harmonics. The third harmonic is short-circuited because of the connection of the transformer in the high order harmonics, so this is a measure for more than five harmonics. If the reactance of the series reactor causes the fifth harmonic resonance, the fifth harmonic is short-circuited. For the high order harmonics above the fifth harmonic, the waveform is improved because the capacitor circuit becomes inductive, thus eliminating the possibility of resonance fundamentally.