Category: VOLTAGE CONTROL

Voltage Control by Synchronous Condenser

Voltage Control by Synchronous Condenser: The voltage at the receiving end of a transmission line can be controlled by installing specially designed synchronous motors called synchronous condensers at the receiving end of the line. The Voltage Control by Synchronous Condenser supplies wattless leading kVA to the line depending upon the excitation of the motor. This […]

Induction Regulators

Induction Regulators: An induction regulators is essentially a constant voltage transformer, one winding of which can be moved w.r.t.┬áthe other, thereby obtaining a variable secondary voltage. The primary winding is connected across the supply while the secondary winding is connected in series with the line whose voltage is to be controlled. When the position of […]

Booster Transformer

Booster Transformer: Sometimes it is desired to control the voltage of a transmission line at a point far away from the main transformer. This can be conveniently achieved by the use of a Booster Transformer as shown in Fig. 15.7. The secondary of the booster transformer is connected in series with the line whose voltage […]

Tap Changing Auto Transformer

Tap Changing Auto Transformer: Fig. 15.6 shows diagrammatically Tap Changing Auto Transformer. Here, a mid-tapped auto-transformer or reactor is used. One of the lines is connected to its mid-tapping. One end, say a of this transformer is connected to a series of switches across the odd tappings and the other end b is connected to […]

Tap Changing Transformers

Tap Changing Transformers: The excitation control method is satisfactory only for relatively short lines. However, it is not suitable for long lines as the voltage at the alternator terminals will have to be varied too much in order that the voltage at the far end of the line may be constant. Under such situations, the […]

Brown Boveri Regulator

Brown Boveri Regulator: In this type of Brown Boveri Regulator, exciter field rheostat is varied continuously or in small steps instead of being first completely cut in and then completely cut out as in Tirril regulator. For this purpose, a regulating resistance is connected in series with the field circuit of the exciter. Fluctuations in […]