Due to its ability to effectively improve the power factor of electrical loads, reduce line losses, and enhance the actual load capacity of transformers, this device has significant energy-saving effects. At the same time, the use of specific reactors in the system can also effectively prevent harmonic amplification and absorb most harmonic currents, making the total harmonic distortion rate limit and the limit of each harmonic current content comply with national standards, achieving the goal of harmonic control. If ordinary contactors are used to switch capacitor banks, it will result in large surge currents, slow compensation time, high maintenance costs, and short service life. Therefore, we recommend that users prioritize the use of dynamic reactive power compensation devices in low-voltage power grids such as substations, production workshops, and civil buildings in industrial and mining enterprises, which are particularly suitable for transmission and distribution systems with f…