What action should BA A take when endangered by remaining interconnected with a declining frequency?

When Balancing Authority A is faced with a situation where interconnected systems are experiencing a declining frequency, it is crucial to take actions that stabilize the power grid and maintain reliability. The correct action in this scenario is to bring on additional generation, which in this case is 200 MW, before separating from the interconnected system.

By increasing generation prior to separation, Balancing Authority A helps to ensure that it has sufficient power to meet its load demands once it disconnects. This proactive measure prevents potential issues such as brownouts or blackouts that could occur if A were to separate without sufficient local generation. Additionally, by having more generation online, it contributes to frequency stability in the broader interconnected system, helping to mitigate the declining frequency for as long as possible.

The decision to increase generation rather than separating immediately embraces the principle of maintaining system integrity and reliability, thereby safeguarding both the Balancing Authority's own operations and those of neighboring authorities. This approach aligns with best practice protocols in grid management, which prioritize stable conditions and the provision of adequate resources before making significant system changes like disconnection.