What is the role of capacitors in series in the line?

In the DC circuit, it can be said that the circuit is disconnected and part of the energy can be stored.

In the communication line, the series capacitor can supply reactive power compensation. Usually connected in series of ultra-high voltage lines of 330kV and above, its main function is to improve the system voltage from the perspective of compensating (reducing) reactance to reduce power loss and improve the system. stability.

Series capacitors are widely used in power transmission and distribution systems, especially in long-distance, large-capacity transmission systems, improving transportation capacity, improving system stability, improving system voltage regulation, and improving the power factor of the system. Line loss.