Important indicators for the operation of power compensation capacitors

Due to the increasing demand for power quality in various industries, many companies have begun to choose power compensation capacitors for reactive power compensation.

Today, I would like to talk about several more important "data indicators" in capacitor operation: operating current, operating voltage, and operating temperature.

Current

In actual operation, the rated current of the power compensation capacitor should be less than 1.3 times, otherwise it may cause continuous faults between the compensation capacitor and related equipment. If overcurrent occurs during the actual operation of the compensating capacitor, it is necessary to analyze for the first time the reason why the operating current of the capacitor is higher than the rated current.

Generally speaking, if the operating current is too high, it means that the capacitor is operating under overvoltage, and the best solution is to shut down the operation first.

In addition, if the operating current increases due to system harmonics, a reactor needs to be installed to "eliminate" the harmonics and avoid generating harmonic currents.

operating voltage

Compensating capacitors should avoid long-term operation under overvoltage conditions, otherwise it will cause the capacitor to operate under overload and the heating phenomenon will become increasingly severe.

If the actual operating voltage of the power compensation capacitor is 1.1 times the rated voltage of the capacitor, the actual service life of the capacitor will be greatly reduced, and in severe cases, it may directly cause thermal breakdown faults, resulting in the capacitor being unable to continue to be used.

Operating temperature

To ensure the safe and stable operation of power compensation capacitors, it is necessary to ensure that their operating temperature is within the permitted range (generally not exceeding 50 ℃). If the operating temperature of the compensating capacitor is too high, it will accelerate the aging of the internal insulation of the capacitor, laying a safety hazard for reactive power compensation.

To ensure the safety and stability of reactive power compensation, special attention should be paid to the above "indicators" during the operation of power capacitors!!