5.1.2 Frequency Deviation When a large frequency excursion occurs during normal operations, Balancing Authority areas connected synchronously to the Eastern Interconnection shall continue to operate in the tie line bias area control mode u...
AI summary This section outlines the procedures for managing frequency deviation and area control error (ACE) in the Eastern Interconnection. It specifies conditions under which the tie line bias area control mode should be suspended and alternative strategies implemented, including load shedding in cases of sustained negative ACE.