A CPS1 violation indicates what about a Balancing Authority's (BA) ACE?

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A CPS1 violation signals that a Balancing Authority's Area Control Error (ACE) is hindering frequency. The CPS1, or Control Performance Standard 1, is a reliability standard designed to ensure that balancing authorities maintain the frequency of their grid within acceptable limits. When a Balancing Authority experiences a CPS1 violation, it indicates that the ACE is not effectively managing the differences between generation and load, leading to an inability to control or restore the system frequency to its desired set point.

This occurs when the ACE is outside the threshold necessary to ensure that the grid remains stable, which can result in frequency deviations that could jeopardize the reliability of the electric system. Hence, a CPS1 violation underscores problems with maintaining frequency, reflecting poor performance in balancing supply and demand in real-time operations.

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