What is the primary function of an Automatic Voltage Regulator (AVR)?

The primary function of an Automatic Voltage Regulator (AVR) is to regulate voltage on the interconnection. The AVR continuously monitors the voltage level at a generator's terminal and makes necessary adjustments to maintain the desired voltage set point. This is crucial for ensuring system reliability and stability, as voltage fluctuations can lead to a variety of operational issues, including equipment malfunctions and reduced power quality.

By keeping the voltage consistent, the AVR helps to facilitate efficient power delivery across the electrical grid, supporting both generation and load-side operations. It is particularly important in interconnected systems where maintaining voltage levels within specific limits is essential for preventing cascading failures or outages.

Other functions mentioned, such as controlling power factor, managing active power output, or minimizing transmission losses, are related to power system operations but are not the primary role of the AVR. The AVR focuses specifically on voltage regulation, which is a critical aspect of overall system health and performance.