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Seminar Short Description Following a review of circuit breaker types and the theory of current interruption, this seminar will discuss the various switching duties terminal faults, out-of-phase switching, capacitive current switching and inductive load switching. Parallel switching will be explained. Circuit breaker failures and the specification of circuit breakers will be addressed.
Course Description Many different types of circuit breakers are in operation on power systems today, each with their own strengths and weaknesses. Following a brief history of circuit breakers and a review of the theory of current interruption, the various switching duties terminal faults, short-line faults, out-of-phase switching, capacitive current switching and inductive load switching will be discussed in detail. Parallel switching - when two circuit breakers are tripped in parallel as in breaker-and-a-half schemes - will be explained. Circuit breaker failures based on international surveys will then be discussed and, in conclusion, the specification of circuit breakers will be addressed.
Instructor Dr. David Peelo, P.Eng. - DF Peelo & Associates Ltd.
Comments from previous seminar participants:
APEGBC is an AIBC/CES registered provider offering an AIBC-Accredited activity for 3.75 Core Learning Units. © APEGBC |
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Dr. David Peelo, P.Eng., is a consultant at ZE Power Engineering Inc. He worked for ASEA Power Transmission Products Division in Sweden before joining BC Hydro, where he was a specialist engineer for switchgear and switching. In 2004 the Eindhoven University of Technology awarded him a PhD for original research on current interruption using air-break disconnect switches. He has published more than 50 papers and is actively involved with IEEE, CIGRE and IEC. He is convener of IEC Maintenance Team 32 Inductive Load Switching. 