1.Savings on the electricity bill
Power factor correction eliminates penalties on reactive energy, decreases demand on kVA, and reduces power losses generated in the transformers and conductors of the installation.
2.Increased available power
Fitting PFC equipment on the low voltage side increases the power available at the secondary of a MV/LV transformer. A high power factor optimises an electrical installation by allowing better use of the components.
3.Reduced installation size
Installing PFC equipment allows conductor cross-section to be reduced, as less current is absorbed by the compensated installation for the same active power.
4.Reduced voltage drops
Installing capacitors allows voltage drops to be reduced upstream of the point where the PFC device is connected, therefore preventing overloading of the network and reducing harmonics.

Power factor correction

Power factor correction (PFC) aims to improve power factor, and therefore power quality. It reduces the load on the electrical distribution system, increases energy efficiency and reduces electricity costs. It also decreases the likelihood of instability and failure of equipment.

Power factor correction is obtained via the connection of capacitors which produce reactive energy in opposition to the energy absorbed by loads such as motors, locally close to the load. This improves the power factor from the point where the reactive power source is connected, preventing the unnecessary circulation of current in the network.

Selection of Power Factor Correction

The selection of PFC equipment should be done according to the following four-step process, by persons with the relevant skills:

Step 1: Calculation of the required reactive power

Step 2: Selection of the compensation mode(Central,Group,Individual compensation)

Step 3: Selection of the compensation type

Step 4: Allowance for operating conditions and harmonics

Moden types of Power Factor Correction.LV

1. Capacitor Banks
2. Static Var Generator