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Auxiliary System-Excitation-Stationary rectifier excitation

Stationary rectifier excitation

The excitation of power station consists of exciting power unit, field suppression unit and excitation control unit. With the development of semi-conductor rectification, exciter is replaced by semi-conductor rectifier to be generator excitation power circuit. Excitation transformer is connected to the generator exit or busbar. There are no electric rotating machinery in entire system, so it is called stationary excitation system.

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According DC excitation mode can be divided into he excitation and excitation, excitation string, complex excitation, etc., during the rotation of the DC motor, the stator excitation voltage is controlled to produce a change in magnetic field, change the speed of the DC motor change the speed of the field also played the role of change

 

Major role

1, to maintain the generator terminal voltage at a given value when the generator load changes, by adjusting the magnetic field strength to the constant terminal voltage.

2, a reasonable distribution between parallel operating units reactive assignment.

3, to improve the stability of the power system, including static stability and transient stability and dynamic stability.

 

 

The excitation of power station consists of exciting power unit, field suppression unit and excitation control unit. With the development of semi-conductor rectification, exciter is replaced by semi-conductor rectifier to be generator excitation power circuit. Excitation transformer is connected to the generator exit or busbar. There are no electric rotating machinery in entire system, so it is called stationary excitation system.

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