ARE Project Management (PjM) Practice Exam

After a generator completes a reactive capability test, what action is required?

1. No notification is required since nameplate ratings are published

2. PJM and TO update the EMS rating for the unit

3. Notify PJM via eDART of the nameplate values

4. Notify PJM and TO via eDART of the sustainable reactive capability

The correct answer is: Notify PJM and TO via eDART of the sustainable reactive capability

The requirement to notify PJM and Transmission Owners (TO) via eDART of the sustainable reactive capability after a generator completes a reactive capability test is rooted in the need for consistent and accurate operational data across the grid. Once a reactive capability test is conducted, the results can affect how the generator performs in real-time operations and its contribution to the overall stability and reliability of the power system. This notification process allows PJM and the Transmission Operators to update their operational knowledge regarding the unit's capabilities. The sustainable reactive capability is critical for system planning and operation because it defines how much reactive power the generator can supply reliably over a sustained period. By providing this information, the generator contributes to better grid management and ensures that the operational strategies align with the actual performance capacities of all generators connected to the grid. The other options may imply a lack of the necessary granularity in communication needed for system reliability and may not take into account the importance of up-to-date information regarding actual operational capabilities as indicated by testing. For instance, simply relying on published nameplate ratings without considering updated testing data may result in inaccurate assumptions about the unit's reactive power capabilities.