What is reactive power in simple terms?
The portion of electricity that establishes and sustains the electric and magnetic fields of alternating-current equipment. Reactive power is provided by generators, synchronous condensers, or electrostatic equipment such as capacitors and directly influences electric system voltage. …
What is the purpose of reactive power?
While the real or active power is the energy supplied to run a motor, heat a home, or illuminate an electric light bulb, reactive power provides the important function of regulating the voltage thereby helping to move power effectively through the utility grid and transmission lines to where it is required by the load.
How is reactive power used?
Reactive power is used to provide the voltage levels necessary for active power to do useful work. … Reactive power is required to maintain the voltage to deliver active power (watts) through transmission lines. Motor loads and other loads require reactive power to convert the flow of electrons into useful work.
What is reactive power control?
Reactive power production and consumption by generators allows the network operator to control voltages throughout their system. Alternatively, the wind farm may have to adjust its reactive power consumption or production in order to control the voltage to a set point. …
What is reactive power formula?
Apparent power: S = V x I (kVA) Active power: P = V x Ia (kW) Reactive power: Q = V x Ir (kvar)
Why is reactive power called Useless?
Reactive power is electricity that is both useless and necessary. Electrical power ( P , in Watts) is composed of voltage (V, in Volts) and current (I, in Amps). … The speed of the current remains the same, however the water becomes denser and the flow is heavier as a result.
What is active & reactive power?
Active power is the power that continuously flows from source to load in an electric circuit. Reactive power is the power that continuously flows from source to load and returns back to source in an electric circuit. … Reactive power is called as ‘Imaginary power’ or ‘Watt less power’ or ‘Useless power’ or Complex power.
How is reactive power produced?
Reactive power is either generated or absorbed by electric generators (or, in some cases, devices known as “capacitors”) to maintain a constant voltage level, commonly referred to as providing “voltage support.” Generators providing voltage support often suffer heating losses that result in a reduced ability to …