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Power factor correction brings the power factor of an AC power circuit closer to 1 by supplying or absorbing reactive power, adding capacitors or inductors that act to cancel the inductive or capacitive effects of the load, respectively. In the case of offsetting the inductive effect of motor loads, capacitors can be locally connected.
In electric power distribution, capacitors are used for power factor correction. Such capacitors often come as three capacitors connected as a three-phase Electrical load. Usually, the values of these capacitors are given not in farads but rather as a reactive power in volt-amperes reactive (VAr).
Its principal advantage is the ease with which the amount of correction can be adjusted. Synchronous condensers are an alternative to capacitor banks and static VAR compensators for power-factor correction in power grids. [3] One advantage is that the amount of reactive power from a synchronous condenser can be continuously adjusted.
In Electrical Engineering, a static VAR compensator (SVC) is a set of electrical devices for providing fast-acting reactive power on high-voltage electricity transmission networks. [1] [2] SVCs are part of the flexible AC transmission system [3] [4] device family, regulating voltage, power factor, harmonics and stabilizing the system. A static ...
However, the maximum power theorem does not apply to its "downstream" connection. That connection is an impedance bridging connection; it emulates a high-voltage, low-resistance source to maximize efficiency. On the power grid the overall load is usually inductive. Consequently, power factor correction is most commonly achieved with banks of ...
This is traditionally done using shunt capacitors and inductors (reactors), [13] much like Power Factor Correction. The most common shunt compensation device is the Static VAR Compensator (SVC). [14] SVCs use power electronics, generally Thyristors, to switch fixed capacitors and reactors.
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