Which disturbance would be reportable for Disturbance Control Performance evaluation under NERC DCS criteria?

Which disturbance would be reportable for Disturbance Control Performance evaluation under NERC DCS criteria?

• A. The loss of 715 MW of firm load.
• B. The loss of 3 generating units totaling 1,300 MW.
• C. The loss of a 750 MW generating unit.
• D. The loss of a 950 MW generating unit at 100% output.

Answer: (D)

The selection of the loss of a 950 MW generating unit at 100% output as a reportable disturbance for Disturbance Control Performance evaluation under NERC DCS criteria is appropriate because it involves a substantial and significant event impacting the generation capacity. When a generating unit operates at full capacity and experiences a loss, it can significantly affect the system's reliability, necessitating a report under NERC regulations. This choice demonstrates a clear and immediate impact on the grid’s ability to maintain balance between generation and load. The loss of a substantial generation resource, especially one that is fully utilized, directly influences the system's performance metrics and is critical for understanding the state of system operation during disturbances. In contrast, other choices may involve system components that do not meet the same level of disturbance significance, either through lower capacity losses, partial loads, or loads not being entirely firm, which may not require the same level of reporting in the context of DCS evaluations.

The selection of the loss of a 950 MW generating unit at 100% output as a reportable disturbance for Disturbance Control Performance evaluation under NERC DCS criteria is appropriate because it involves a substantial and significant event impacting the generation capacity. When a generating unit operates at full capacity and experiences a loss, it can significantly affect the system's reliability, necessitating a report under NERC regulations.

This choice demonstrates a clear and immediate impact on the grid’s ability to maintain balance between generation and load. The loss of a substantial generation resource, especially one that is fully utilized, directly influences the system's performance metrics and is critical for understanding the state of system operation during disturbances.

In contrast, other choices may involve system components that do not meet the same level of disturbance significance, either through lower capacity losses, partial loads, or loads not being entirely firm, which may not require the same level of reporting in the context of DCS evaluations.