Connection of Shunt Capacitors at 11 kV Substations

11 kV automatic switched capacitor banks are installed on bus of 33 or 66 kV substations. This has the facility that the required number of capacitor banks could be put in or out of the service depending on the requirement.

The maintenance of voltage at customer premises inside statutory limits at all loads is the responsibility of utility. Series capacitors begin negative reactance within the line and improve the voltage that in turn also decreases the power losses. The major benefits of series capacitors is in which the quantum of compensation is highly responsive to load current and series capacitors could be remain in the circuit during the complete load cycle, without causing some adverse effect of over voltages, in during low load conditions.