Improvement of Load Power Factor by Using Capacitor

Abstract

Series and parallel capacitors in the power system effect reactive power to improve power factor and voltage because of increasing the system capacity and reducing losses. Reactive power of series capacitor is the same to the current. There are certain unpleasant aspects in the capacitor series. Generally, the cost to install a series capacitor is higher than parallel capacitor. It is caused by complex protection equipment for series capacitor and designing series capacitors for greater power than parallel capacitor to solve the future cost. Installation of capacitors is important to reduce of a system reactive power. Transmission line would be most economical if it is used to send active power where the need of reactive power can be obtained by distribution system in substation level. This will allow user in optimum transmission line, improve operational performance and reduce energy losses. It requires a system and planning carefully to fulfill the need of system reactive power in the same way with active power planning and it is programmed an additional generator capacity