What happens when there is an issue with ACE data retrieval for more than 50% of a minute?

When there is an issue with the retrieval of Area Control Error (ACE) data for more than 50% of a minute, the data is not recorded in the Control Performance Standard (CPS). The Control Performance Standards are critical metrics used to assess the reliability of the transmission system, and accurate ACE data is essential for this assessment. In instances where data is missing due to retrieval issues, the CPS calculations cannot accurately reflect the operational performance of the transmission system for that minute.

This leads to the conclusion that the control performance standards may inaccurately represent the system’s performance, as it relies on complete and reliable ACE data. Consequently, any significant data loss during a minute impacts the calculations directly, which is why the statement about the data not being recorded in the CPS is correct.