On Circuit Breaker Failure Protection in 61850-Based Substations


Power system protection is a mission critical task that must be accomplished within the specified time limits so as to maintain the stability, reliability, and safety of the grid. As modern substations embrace the integrated communications and LAN-based substation automation systems using IEC61850 standard, the network latency and reliability issues continue to influence the decision making process to move the critical protection tasks to LAN-based substation automation systems (SAS) and eliminate the laborious and costly copper hard-wiring in the substations. Backup protection functions such as circuit breaker failure (CBF) protection seems to be a good candidate to implement in SAS to gain the operational experience with the new paradigm. CBF protection is a deferred protection function and can tolerate variations in network latency with proper design. This paper explores this application and offers two metrics to assess availability followed by presentation of a case study to illustrate the concepts and this particular application.

Meeting Name

IEEE Power and Energy Society General Meeting (2012: Jul. 22-26, San Diego, CA)


Electrical and Computer Engineering

Keywords and Phrases

Backup Protection; CBF Protection; Circuit Breaker Failures; Decision Making Process; GOOSE Messaging; IEC 61850; IEC61850 Standard; Mission Critical Tasks; Network Latencies; Operational Experience; Power System Protection; Proper Design; Protection Function; Protection Tasks; Substation Automation; Substation Automation Systems; Electric Circuit Breakers; Electric Fault Currents; Surge Protection

International Standard Book Number (ISBN)

978-1467327275; 978-1467327299

International Standard Serial Number (ISSN)

1932-5517; 1944-9925

Document Type

Article - Conference proceedings

Document Version


File Type





© 2012 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Jul 2012