What is the minimum compliance requirement for NERC DCS concerning reportable disturbances?

The minimum compliance requirement for NERC Disturbance Control Standard (DCS) concerning reportable disturbances is 100%. This requirement emphasizes the importance of complete and accurate reporting of all disturbances that occur within a system's operational parameters. The standard is designed to ensure that all events which could significantly affect reliability are documented systematically to foster transparency and accountability within the power system operations.

Meeting the 100% requirement means that every reportable disturbance must be logged and analyzed to identify potential causes, impacts on system integrity, and corrective measures needed for future prevention. This stringent compliance aligns with NERC’s broader goals of enhancing the reliability and security of the North American power grid, enabling operators to respond effectively to disturbances and reduce the risk of system failures.

The other choices represent lower compliance levels that would not fulfill the obligation set by NERC DCS. Lower percentages could potentially lead to significant disturbances being overlooked, resulting in inadequate responses to reliability issues.