The role of apf active filter in low voltage capacitor cabinet

Apf active filters are often used to eliminate grid harmonics and control electromagnetic interference in power systems. And it is often put into low-voltage capacitor cabinets in conjunction with capacitors, controllers and other equipment. But some corporate users said that they know the functions of capacitors and controllers, but what is the role of apf filters in capacitor cabinets?
In fact, in the low-voltage capacitor cabinet, the APF active filter plays an unusual role.
1. It can effectively filter the harmonics of the power grid. Grid harmonics refer to harmonic signals formed by non-sinusoidal waves of grid voltage and current caused by nonlinear loads. It will seriously affect the stability of the power grid and the quality of power supply. The APF active filter can sense and reversely generate the same harmonic signal in real time according to the characteristics of the harmonics of the power grid, and cancel it with the harmonics of the power grid to achieve the effect of harmonic filtering.
2. It can suppress electromagnetic interference in the capacitor cabinet. In the low-voltage capacitor cabinet, because there are a large number of electrical equipment and power supplies, various electromagnetic interferences will be generated. These electromagnetic interferences can interfere with the normal operation of other electronic equipment and even damage the equipment. The active filter realizes the elimination of electromagnetic interference by sensing the frequency and amplitude of electromagnetic interference and using the inverter to generate interference signals of equal amplitude and opposite amplitude.
3. It can also improve the power factor of the power grid. We have mentioned the nonlinear load problem of the power grid before. During the operation of the power grid, the nonlinear load will cause the power factor of the power grid to decrease. Increase the load loss of the power grid and reduce the stability of the power grid. The active filter monitors the power factor and its changes of the power grid in real time, and through the control of the inverter, can compensate for the lack of power factor and improve the power factor of the power grid.
So it can be seen that not only equipment such as capacitors and controllers are important in the low-voltage capacitor cabinet. The existence of Apf active filter improves the efficiency of the entire power grid operation and reduces operational risks. I believe that after seeing this, corporate users will also understand the role of active filters in capacitor cabinets. Therefore, it is inevitable to put filters in capacitor cabinets.