October 2017

Shunt Reactor Switching: Theory and Practice

Please Note
Please bring a calculator and laptop loaded with Excel to the seminar. 
Status: This seminar has been cancelled due to low registration.
Date: Wednesday, October 25, 2017
Time: 8:00 AM-8:30 AM: Registration and Continental Breakfast
8:30 AM-4:30 PM: Shunt Reactor Switching: Theory and Practice
Location: Vancouver, BC
Presenter: Dr. David Peelo, P.Eng. 
Credit: 7 Formal Professional Development Hours (PDH)
Cost: Early Bird Price Engineers and Geoscientists BC Member: $419.00 + GST = $439.95 until Oct 11, 2017

Engineers and Geoscientists BC Member and EIT/GIT Regular Price: $499.00 + GST = $523.95

Non-Member Price: $499.00 + GST = $523.95

Student Member Price: $249.50 + GST = $261.98
Please Note: *A minimum number of registrations are needed by October 11, 2017 to proceed with this seminar. Please register early to avoid cancellation.
**All prices are subject to applicable taxes.
Contact: Julie Killin | Project Coordinator, Member Services
Direct: 604.558.6656
Toll Free: 1.888.430.8035 ext.6656
Email: [email protected]
Circuit breakers generally have no difficulty in interrupting shunt reactor currents and in fact may force the current to a premature zero due to the phenomenon of current chopping. Shunt reactor switching is however a unique and onerous duty for circuit breakers involving a complex interaction between the characteristics of the circuit breaker by type, gas or vacuum, and by way of its current chopping capability, arc voltage and arcing time, and the circuit as represented by its effective capacitance and reactor grounding arrangement.

The course explains the interaction in detail in and the derivation of a generalized circuit breaker TRV equation which can be used for any shunt reactor application. Five reactor applications will be considered as class work and attendees must bring a calculator and a laptop loaded with Excel for this part of the course.


Dr. David Peelo is a consultant and former switching specialist at BC Hydro. He is a graduate of University College Dublin and Eindhoven University of Technology. He worked first at the ASEA Power Transmission Products Division in Ludvika, Sweden, and then for BC Hydro for 28 years rising to the position of Specialist Engineer. As a consultant, he has clients in 15 countries worldwide and in particular teaches continuing professional development courses on current interruption transients and surge arrester application. He is an active Cigre member and is a past Convenor of IEC MT32 (Inductive load switching), the Convener of IEC PT42 (Current interrupting capability of air‑break disconnectors) and a member of IEC MT57 (Application guide for IEC 62271‑100 and other circuit breaker related standards). He is an IEC 1906 Award recipient and a Distinguished Member of Cigre. He has authored or co-authored over 70 publications on circuit breakers and surge arrester application, is the author of a textbook on current interruption transients calculation, and a co-author of a textbook on switching in transmission and distribution networks.

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