Parallel capacitor compensation: the same as the voltage level of the system in which it is used, to compensate for inductive reactive power in the power grid, is to improve the power factor of the system as the main purpose;

 

Series capacitor compensation: generally in series in the transmission line, used in the EHV transmission system, such as transmission lines above 110kV, compensating the corona caused by the conductor inductive reactive power, improve transmission capacity (capacity), and extend the transmission distance;and extend the transmission distance;