What are the Forms of Reactive Power Compensation?

What are the Forms of Reactive Power Compensation?

1) Individual compensation
Individual compensation is the nearest compensation method for the reactive power required by a single electrical equipment. The capacitor is directly connected to the same electrical circuit of a single electrical equipment, controlled by the same switch, and put into operation or disconnected at the same time. The effect of this compensation method is the best. The capacitor is close to the electrical equipment and balances the reactive current on the spot, which can avoid the overcompensation when there is no load and ensure the quality of power supply. This compensation method is often used in high and low voltage electric motors and other electrical equipment. However, when the user equipment is not in continuous operation, the utilization rate of the capacitor is low and the compensation benefit can not be fully brought into play.

 

2) decentralized compensation
The dispersive compensation is to install the capacitors in groups on the outlet line of each branch in the workshop distribution room or substation. It can be put into or cut out the capacitor bank according to the change of system load, and the compensation effect is better. But the cost is relatively high.

 

3) Centralized compensation
Centralized compensation is that the capacitor banks are centrally installed on the bus of the primary or secondary side of the substation. This compensation method is simple to install and reliable to run, but the compensation effect is worse than the first two compensation methods, and the cost is relatively high.