To effectively manage frequency during the restoration process, how much load should ideally be avoided from being energized?

• A. 5% of online generation capacity
• B. 10% of online generation capacity
• C. 15% of online generation capacity
• D. 20% of online generation capacity

Answer: (A)

To effectively manage frequency during the restoration process, it is essential to limit load additions that can lead to frequency instability. The ideal practice involves avoiding the energization of a certain percentage of online generation capacity to maintain balance while gradually restoring system conditions.

In this context, the ideal percentage to avoid energizing is aligned with operational guidelines that assist in keeping the frequency stable during delicate restoration phases. By targeting around 5% of online generation capacity, operators ensure they are not adding too much load too quickly, which helps prevent significant deviations in system frequency. This conservative approach allows more effective management of the generation resources available while working towards system reliability.

The other percentages represent more significant loads that could be added, potentially causing instability or an imbalance in generation and demand, hence why they are not ideal for this purpose. Keeping load additions limited to this lower percentage supports a more controlled and gradual restoration process, aiding in maintaining the overall reliability of the electric grid.