+Taufiqullah

+Taufiqullah

Voltage Regulator Generator

Posted by: Taufiqullah December 24, 2022 181 Views

When the rotor spins will lead to the intersection between the stator winding field coils resulting electromotive force (GGL). In the process to generate a voltage in the main generator requires strengthening or excitacy. That is using a current transformer (CT = Current Transformer) / PT (Potential Transformer Voltage Transformer =) Automatic Voltage Regulator (AVR) as a conduit for the AVR input.

Further changes in current and voltage are measured by CT / PT AVR is used to shift the prisoner in the AVR appropriate size changes. The change in the resistance value AVR strengthening effect on the system as a whole or excitacy so that the output voltage of the generator will remain intact stability.

Support equipment system excitacy

1) The pilot exciter

An amplifier on the main generator is in the amplifier or the amplifier itself to the type of compound long coil DC generator, Giver of the first reinforcement on the main exciter.

Derived from the magnetic remanent magnetism (magnetic remnants) artificial

2) Juster Werstand

Shearing resistance that serves to regulate the output voltage so that the pilot exciter par round (1. 500 rpm) to 110 volts DC

3) Shunt regelar

Prisoners shunt to regulate the output voltage of the AVR before the parallel units.

4) AVR

As a controller that is always stable generator output voltage / constant with varying load

5) VVA

A strengthening contacts

6) Main Exciter

As the main amplifier for the generator after it first gets the current strengthening of the pilot exciter.

7) CT / PPT AVR

For measuring current and voltage output of the generator as input for subsequent AVR when the unit is parallel or in sync.

Reinforcement system generator units

The direct current voltage and initially raised by the flux residue (which is stored on the pilot exciter stator windings compound) with the addition of the rate will generate current-voltage up to a certain critical point in the round.

Figure II.21. Figure wiring system strengthening hydroelectric generator units in the area I Mendalan sources (hydropower Mendalan)

Voltage-current generated by a pilot exciter voltage gain for the main generator exciter, the main generator exciter is a direct current shunt generator with separate reinforcement.
Strengthening of the main generator is supplied by the main exciter field via a switch amplifier.

At the start of operation of the generating units, after the turbine-generator at the nominal rotation (750 rpm) charging voltage of the main generator is done by turning the hand wheel full (shunt regullar) clockwise (lowering the price to the minimum resistance) before entering the amplifier switch field ( VVA).

In the generator output voltage ± 6 kV, voltage regullar further twist in the same direction with the shunt regullar up with the same direction as the shunt regullar pointing up to 6 KV generator output. At the output voltage of the generator is the first step for the preparation of parallel units with nets manually.

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