In recent years, with the rapid development of technology, a large number of rectifiers, frequency converters, and large power electronic equipment have been used in the power system. As a result, harmonic pollution to the power grid is becoming increasingly serious. Secondly, harmonics are amplified through compensating capacitors, causing severe overcurrent of the capacitors. In some cases, the capacitors are damaged, and in others, the service life of the capacitors is greatly shortened. To cope with the increasingly severe power grid environment, our company has developed the ASMJ series self-healing AC filter capacitors. This product is used in situations with high harmonic content in the system and is used in conjunction with filter reactors. It mainly provides a low impedance channel for one or more harmonic currents in 50Hz or 60Hz AC power systems to absorb higher-order harmonics and also serves as reactive power compensation