For a system to function correctly, how should the frequencies of GTGs be aligned?

The correct procedure for ensuring that gas turbine generators (GTGs) function harmoniously within a system is for their frequencies to be automatically adjusted by an Automatic Power Distribution (APD) system. This automatic adjustment is crucial because it allows the system to respond dynamically to variations in load demand and operational conditions.

Automatic frequency adjustments ensure that the generators stay synchronized and deliver a steady and reliable output. When two or more generators are running in parallel, their frequencies must match closely to avoid phase differences that can lead to power imbalances, system instability, or potential damage to the generators themselves. The APD system is designed to monitor and adjust the output frequencies of the GTGs in real-time, maintaining effective coordination and efficiency in power distribution.

In contrast, manual configuration can lead to human error and may not respond quickly enough to changes in system demands. A fixed frequency does not allow for the necessary flexibility and adaptability in operation, and randomly alternating frequencies could result in severe operational issues, including instability or damage to the equipment. Therefore, the automatic adjustment by APD is the most effective approach to ensure the proper alignment and stability of GTG frequencies.