North American Electric Reliability Corporation

VAR-501-WECC-4

Power System Stabilizer (PSS)

Latest Edition2024-04-01

Country ScopeNorth America

CategoryReliability Standards / Voltage and Reactive

Record Typestandard

ApplicabilityEnforceable after approval or adoption by the applicable regulatory authority

Applicability Summary

NERC reliability standard in the VAR family addressing power system stabilizer (pss).

NERC page label: Mandatory Subject to Enforcement. Standard document modified May 19, 2025. Public notes: Filing/Order Docket No. RD24-2-000.