When series capacitors are connected in series with the transmission line

they can compensate the impedance of the transmission line

reduce the voltage loss

improve the stability of the transmission system

and optimize power sharing between parallel circuits. This paper describes the function of the series capacitor

and compares the function of series capacitor with that of shunt capacitor. Finally

this paper deals with selection of the series capacitor

including selection of its dielectric material and internal fault protection.