Precautions for using traditional parallel power capacitors

With the rapid development of science and technology, especially the rapid development of power electronics technology in the past decade, revolutionary changes have been brought to industrial production in terms of raw materials, design, and processes, and parallel power capacitors are no exception. In less than 15 years, the update iteration from the third generation to the fourth generation technology has been completed. However, due to the relatively high price of the new generation capacitors, there is still a certain market for traditional capacitors. What issues should be paid attention to when using traditional parallel power capacitors.

Under normal circumstances, ordinary parallel power capacitors do not have self-healing function, or their self-healing ability is relatively poor. When used, they may cause * * breakdown, and even cause bulging and explosion problems, endangering personal safety and normal equipment operation.

When the contactor or switch is disconnected, the discharge current of the connected capacitor will generate a certain amplitude of high voltage current. Improper operation can also endanger personal safety and the normal operation of equipment.

To ensure reliable discharge of capacitors during equipment shutdown, traditional capacitors must be equipped with appropriate discharge circuits or use separate discharge devices, as they do not have built-in discharge resistors.

When the grid voltage is higher than the rated voltage of the reactive power compensation system, its operating time should be reduced accordingly, otherwise it will reduce the service life of parallel power capacitors.