Active Standard

IEEE C37.120-2021

IEEE Guide for Protection System Redundancy for Power System Reliability

This guide is developed to assist users in selecting the appropriate level of protection system redundancy for power system reliability based on the best industry practices. It defines protection system redundancy and examines the effect of protection system components on redundancy. Different concepts of redundancy as related to physical location, instrument transformer, relay scheme, and communication systems are discussed. Redundancy application considerations for various power system elements are presented. (An errata for this standard is available at https://standards.ieee.org/wp-content/uploads/2022/12/C37.120-2021_errata.pdf)

Sponsor Committee
PE/PSRCC - Power System Relaying and Control
Learn More About PE/PSRCC - Power System Relaying and Control
Status
Active Standard
PAR Approval
2017-09-28
Board Approval
2021-11-09
History
ANSI Approved:
2022-04-29
Published:
2022-02-28

Additional Resources

Erratas
C37.120-2021_errata.pdf

Working Group Details

Society
IEEE Power and Energy Society
Learn More About IEEE Power and Energy Society
Sponsor Committee
PE/PSRCC - Power System Relaying and Control
Learn More About PE/PSRCC - Power System Relaying and Control
Working Group
C31_PC37.120 - Protection System Redundancy for Power System Reliability
IEEE Program Manager
Malia Zaman
Contact Malia Zaman
Working Group Chair
Solveig Ward

Other Activities From This Working Group

Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.


No Active Projects

Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.


No Active Standards

These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.


No Superseded Standards

These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.


No Inactive-Withdrawn Standards

These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.


No Inactive-Reserved Standards
Subscribe to our Newsletter

Sign up for our monthly newsletter to learn about new developments, including resources, insights and more.