A reactor that is connected in series in a power grid and used to limit fault currents or distribute loads in parallel circuits. Reactors in the 220kV, 110KV, 35kV and 10kV networks are used to absorb the reactive power of the charging capacitance of the cable line. The operating voltage can be adjusted by adjusting the number of AC-DCModules. The High voltage AC-DCmodule has a variety of functions to improve power system related operations, including:

1. Improve voltage distribution on long-distance power lines.

2, to prevent the long line generator may occur self-excited resonance.

3, light no-load or light load line capacitance effect to reduce power frequency transient overvoltage.

4, when the neutral point of the reactor is grounded through the small reactance, the small reactor can also be used to compensate the interphase and relative ground capacitance of the line, so as to accelerate the automatic extinguishing of the secondary power current, which is easy to use.

5, in the case of light load, make the line reactive power balance as much as possible, to prevent the unreasonable flow of reactive power. At the same time, the power loss on the line is also reduced.

6, when the large unit and the system in parallel? The power frequency steady-state voltage on the high voltage bus is reduced to facilitate synchronous parallel operation of the generators.

The role of reactors in high-voltage distribution systems: The commonly used reactors in power systems are AC-DCmodule and shunt reactor. Series is mainly used to limit short circuit current, and can also be used in series or parallel with capacitors in filters to limit higher harmonics in the power grid.

The main function of AC-DCmodule is to slow down high harmonics and limit the closing inrush current, prevent harmonics from harming capacitors, and avoid excessive amplification and resonance of harmonics caused by capacitor device access. However, it must not be arbitrarily combined with the capacitor bank, let alone the harmonic background where the capacitor bank is connected to the bus bar.

In summary, this paper describes the function of AC-DCmodule. I believe you have a more and more profound understanding. I hope this paper can be of great reference value to readers.

AC-DCmodule https://www.unikeyic.com/blog/choosing-the-right-power-module-for-your-project-ac-dc-dc-dc-and-poe.html