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NRG

NERC PRC-025 Study for Cottonwood Generators

Year

2019

Location

Texas

Service Provided

NERC Compliance

powerplant photo

How we helped

SynchroGrid performed engineering calculations to verify that relay settings complied with PRC-025-2 for four Cottonwood generation units. The purpose of this standard is to prevent unnecessary tripping of generators and equipment damage by correctly setting load-responsive relays.

SynchroGrid’s responsibilities included reviewing relay one-line/three-line diagrams and applicable relay settings, performing calculations to verify relay settings complied with PRC-025, suggesting settings changes for non-compliant relays, and producing compliance reports.

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