Automatic Voltage Control and Generation Control in Power Systems
Classified in Other subjects
Written on in English with a size of 1.76 KB
Automatic Voltage Control
Basically consists of a main exciter field which excites the alternator field to control the output voltage. The exciter field is automatically controlled through an error equal to V reference - Vt. When the output voltage is higher than the required value, the BT is measured by a potential transformer and fed back to the input so that the error V reference - Vt is applied to the exciting field. This ensures that the generator output voltage is maintained at the desired level.
Components:
- Potential Transformer: Provides a sample of terminal voltage
- Differentiating Device: Gives actuating error e = V ref - Vt
- Error Amplifier: Amplifies the error signal
- SCR Power Amp: Transfer Function = (ke / 1 + TeS)