NERC PRC-023 Compliance Studies

Ensuring compliance with the PRC-023-2 Transmission Relay Loadability Standard has become a major challenge for many transmission utilities, requiring extensive review of all protection functions and associated settings that could trip on load current in an effort to identify and correct any potential load violations. Utilities are required to provide auditable documentations of their investigation process and evidence of compliance. Any violations on the system can result in significant fines. Due to the complexity and extensive size of existing transmission systems, there is a need for a systematic method for utilities to verify and document their system compliance with the PRC-023-2 reliability standard.