What is reactive power?
Reactive power is a type of electrical power that is used to maintain the voltage in an electrical power system. It is measured in "volt-amperes reactive" (VARs). Reactive power is needed in an AC circuit when the current and voltage are not in phase, meaning they are not happening at the same time.
What is the use of reactive power?
There are several reasons why reactive power is important in an electrical power system.
- Voltage control: Reactive power can be used to control the voltage in an electrical power system. By controlling the amount of reactive power being used, it is possible to keep the voltage at a stable level.
- To satisfy reactive power demand: Some electrical devices, such as motors and transformers, require a certain amount of reactive power to function properly. Reactive power can be used to meet this demand.
- To reduce electrical blackout: Reactive power can help to prevent an electrical blackout by providing a reserve of power that can be used if there is a sudden increase in demand or a loss of power from one part of the system.
- To produce magnetic flux: Reactive power is also needed to produce the magnetic field that is used in transformers and motors. Without sufficient reactive power, these devices would not be able to function properly.
Overall, reactive power is an important part of any electrical power system, as it helps to maintain stable voltage levels, meet the power demands of certain devices, and prevent blackouts.