Why and How to improve the power factor
Feb 24,2020

Why to improve the power Factor?

A good power factor makes it possible to optimize on electrical installation and provide the following advantages
• No billing for reactive energy.
• Decrease in the subscribed power in kVA
• Limitation of active energy losses in cables given the decrease in the current conveyed in the installation
• Improvement in the voltage level at the end of the line
• Additional power available at the power transformers if the compensation is performed in the secondary winding

How to improve the power factor?

Improving the power factor of an electrical installation consist of giving it the means to produce a varying proportion of the reactive energy that it consumes itself.
Different systems are available to produce reactive energy, particularly phase advancers and shunt capacitors (or serial capacitors for major transport networks).

The capacitor is most frequently used given:
• It’s non‐consumption of active energy,
• It’s purchasing cost,
• It’s easy use,
• It’s service life (approximately 10 year),
• It’s very low maintenance (static device)
The capacitor is a receiver composed of two conducting part (electrodes) separated by an insulator. When this receiver is subjected to a sinusoidal voltage, it shifts its current, and therefore it’s (capacitive reactive) power, by 90° forward the voltage.
Conversely, all other receivers (motor, transformer, etc.) shift heir reactive component (inductive reactive power or current) 90° backward the voltage.
The Victorial composition of these (inductive or capacitive) reactive powers or current gives a resulting reactive power or current below the existing value before the installation of Capacitors.
In simpler terms, it can be said that inductive receivers (motors, transformers, etc.) consume reactive energy, while capacitors (capacitive receivers) produce reactive energy.

ZDDQ Related Products for Power factor improvement

Low voltage capacitor banks

Low voltage static var generator

Medium voltage capacitor banks

Medium voltage STATCOM

medium voltage statcom MV SVG

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