Reactive Power

Some articles on power, reactive power, reactive:

Electric Power - Explanation - Alternating Current
... The portion of power flow that, averaged over a complete cycle of the AC waveform, results in net transfer of energy in one direction is known as real power (also referred to as active power) ... That portion of power flow due to stored energy, that returns to the source in each cycle, is known as reactive power ... The relationship between real power, reactive power and apparent power can be expressed by representing the quantities as vectors ...
Static Inverter Plant - Components - Reactive Power
... converters are used, the converter station will require between 40% and 60% of its power rating as reactive power ... by banks of switched capacitors or by synchronous condensers, or if a suitable power generating station is located close to the static inverter plant, the generators in the power station ... The demand for reactive power can be reduced if the converter transformers have on-load tap changers with a sufficient range of taps for AC voltage control ...
Synchronous Condenser
... Its purpose is not to convert electric power to mechanical power or vice versa, but to adjust conditions on the electric power transmission grid ... Its field is controlled by a voltage regulator to either generate or absorb reactive power as needed to adjust the grid's voltage, or to improve power factor ... Increasing the device's field excitation results in its furnishing reactive power (vars) to the system ...
STATCOM - Uses
... Usually a STATCOM is installed to support electricity networks that have a poor power factor and often poor voltage regulation ... However, its active power capability can be increased if a suitable energy storage device is connected across the DC capacitor ... The reactive power at the terminals of the STATCOM depends on the amplitude of the voltage source ...
AC Power - Real, Reactive, and Apparent Powers
... In this case, only real power is transferred ... If the loads are purely reactive, then the voltage and current are 90 degrees out of phase ... In this case, only reactive energy flows—there is no net transfer of energy to the load ...

Famous quotes containing the word power:

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