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In a typical electrical grid, the basics of the voltage control are provided by the synchronous generators. These generators are equipped with automatic voltage regulators that adjust the excitation field keeping the voltage at the generator's terminals within the target range. [7]
Switched mode regulator supplies also include an inductor. At times regulated supplies can be much more complex. An example supply from a 1980s TV which used bidirectional interaction between the main supply and the line output stage to operate, generating a range of output voltages with varying amounts of stabilisation.
voltage regulators, which are essentially transformers with tap changers to adjust the voltage along the feeder, so as to compensate for the voltage drop over distance; and; capacitors, which reduce the voltage drop along the feeder by reducing current flow to loads consuming reactive power.
Each regulator weighs about 1200 kg and is rated 576 kVA. Three phase wye voltage regulator. Voltage regulators or stabilizers are used to compensate for voltage fluctuations in mains power. Large regulators may be permanently installed on distribution lines. Small portable regulators may be plugged in between sensitive equipment and a wall outlet.
An electrical grid may have many types of generators and loads; generators must be controlled to maintain stable operation of the system. In an electric power system, automatic generation control (AGC) is a system for adjusting the power output of multiple generators at different power plants, in response to changes in the load. Since a power ...
Schematic of wiring an induction regulator. Power source is connected to R-S-T rotor terminals. Output voltage is N+1-2-3 terminals. Diagram of electrical phasors for an induction regulator. An induction regulator is an alternating current electrical machine, somewhat similar to an induction motor, which can provide a continuously variable ...
The controllers change their on-off ratio due to the degree of regulation. With a required output of 50%, the controller would switch off a full wave and a full wave in the pulse group mode.
During installation of a generator, careful checks are made to ensure the generator terminals and all control wiring is correct so that the order of phases (phase sequence) matches the system. Connecting a generator with the wrong phase sequence will result in large, possibly damaging, currents as the system voltages are opposite to those of ...