This Nodal Protocol Revision Request (NPRR) requires Generation Resources and Energy Storage Resources (ESRs) to develop and implement Subsynchronous Resonance (SSR) Mitigation plans to address SSR vulnerabilities in the event of six or fewer concurrent transmission outages, instead of the current threshold of four or fewer outages. Generation Resources and ESRs that satisfied Planning Guide Section 6.9, Addition of Proposed Generation to the Planning Models, before September 1, 2020 would be allowed to elect SSR monitoring to address SSR vulnerabilities in the event of five or six concurrent transmission outages.
Reason:
Addresses current operational issues, Market efficiencies or enhancements