ABB KUC711AE01 3BHB004661R0001 励磁装置控制单元模块

KUC711AE 3BHB004661 R0001 The power supply that supplies the excitation current of the synchronous generator and its auxiliary equipment are collectively referred to as the excitation system. It is generally composed of two main parts: excitation power unit and excitation regulator. Excitation power unit provides excitation current to the rotor of synchronous generator; The excitation regulator controls the output of the excitation power unit according to the input signal and the given regulation criteria. The automatic excitation regulator of excitation system plays an important role in improving the stability of parallel units of power system. In particular, the development of modern power systems leads to the trend of reducing the stability limit of units, and also promotes the continuous development of excitation technology.

KUC711AE 3BHB004661 R0001- Generally, the process of forming a rotating magnetic field in the generator rotor according to the principle of electromagnetic induction is called excitation. In addition, providing a working magnetic field for generators and other "electrical equipment that works on the principle of electromagnetic induction" is also called excitation. Sometimes, the device that provides rotor power to the generator rotor is also called excitation.

With the development of electric power construction, China's power system industry has entered the stage of large network, high voltage and large unit. The stability of large capacity units during operation is very important to the stability and security of the overall power grid. However, it is the motor excitation system that affects the stability of the generator most. The excitation system plays a very important role in the safety of the power grid, which is not only the guarantee of the stable operation of the unit, but also the lever of the whole power grid and voltage regulation
Main role
1, maintain the generator terminal voltage at the given value, when the generator load changes, by adjusting the strength of the magnetic field to maintain the machine terminal voltage.
2, reasonable distribution of reactive power distribution between parallel running units.
2, improve the stability of the power system, including static stability, transient stability and dynamic stability.

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