What phenomena should the power capacitors in the reactive power compensation cabinet be shut down i

What phenomena should the power capacitors in the reactive power compensation cabinet be shut down in a timely manner? The editor will popularize for everyone:

The overvoltage phenomenon of the power capacitor in the reactive power compensation cabinet should be promptly removed from operation.

Reason: The service life of power capacitors is closely related to the time, amplitude, and frequency of overvoltage. Especially long-term overvoltage can heat up power capacitors and accelerate insulation aging. When the voltage of the power grid exceeds 1.1 times the rated voltage of the power capacitor, it should be shut down in a timely manner.

The overcurrent phenomenon of the power capacitor in the reactive power compensation cabinet should be promptly removed from operation.

Reason: When the capacitor current exceeds 1.3 times the rated current or the three-phase unbalanced current exceeds 5%, it should be shut down. Due to excessive current, it can cause capacitor burnout accidents.

The oil leakage of the power capacitor in the reactive power compensation cabinet should be promptly removed from operation.

Reason: Power capacitors are fully sealed equipment. If the sealing is not strict, air, water, and impurities may enter the power capacitor. When a capacitor leaks oil, the load or ambient temperature should be reduced, but it should not be operated for a long time. If serious oil leakage is found in the power capacitor, it should be stopped as soon as possible.

When the power capacitor of the reactive power compensation cabinet bulges and deforms, it should be shut down in a timely manner.

Reason: When there is an internal fault in the capacitor oil tank, the insulating oil is decomposed by the arc at high temperature, producing a large amount of gas and causing the tank to bulge and deform. In this case, it is necessary to immediately exit and replace the spare parts.

When the power capacitor circuit breaker of the reactive power compensation cabinet trips automatically, it should be shut down in a timely manner.

Reason: After the circuit breaker trips, forced delivery is not allowed. Firstly, check the protective action and related circuits, such as whether the capacitor has exploded, bulged, or sprayed oil. Check circuit breakers, current transformers, voltage transformers, power cables, etc., and determine the nature of the fault.

If the above phenomenon occurs during the operation of the power capacitor in the reactive power compensation cabinet, the capacitor should be shut down in a timely manner to avoid more serious accidents.