How to effectively prolong the years of CBB capacitance

Method 1: carefully control the starting voltage and the operating voltage of the shunt capacitor, and make sure that it is within the permitted area. That is, the long-term operating voltage of the CBB capacitor can not exceed 10% of its nominal voltage value. If the operation starts too high, the service life of the capacitor will be greatly shortened. With the increase of the operating voltage, the loss of the carrier of the CBB capacitor will increase, the capacitor temperature is raised, the degradation speed of the capacitor insulation is accelerated, and the insulation of the capacitor is premature and breakdown. In addition, under the influence of high starting voltage, the insulation carrier inside the CBB capacitor will have partial aging, so the higher the voltage, the faster the aging and the shorter the life.

Method two: to handle the abnormal operating conditions on time and detect the abnormal conditions of the CBB capacitor in operation, such as expansion, joint heating, serious oil leakage and so on. It is necessary to withdraw its operation. For serious accidents such as fire and explosion, power check should be turned off immediately. After understanding the cause of the accident, another BCC capacitor can be replaced.

The most basic is to strictly control the operating voltage, install overcurrent protector protection, control the operating temperature, increase the time of inspection, protection, to effectively prevent and improve the service life of the CBB capacitor.