What is the function of the reactive power compensation device ?

First, it is to improve the power factor, improve the power quality, reduce the flow of reactive current in the power grid, and reduce the line loss and transformer loss.
Second, it is to stabilize the power grid voltage, keep the power grid voltage at a relatively stable level, and improve the reliability and stability of power supply.
Third, it is to increase the transmission capacity of the power system, which can improve the transmission efficiency of active power in the power grid to a certain extent.
Fourth, it is to reduce the electricity expense, because after the power factor is improved, it may enjoy the electricity tariff preferential policy.