• Group Discounts
• Cancellation Policy

Seminar Description

This advanced course covers the origin and derivation of the transient recovery voltage (TRV) requirements for circuit breakers applied for fault clearing and the switching of inductive and capacitive loads. The course first develops the fundamental concepts involved following current interruption including oscillatory circuits, symmetrical components and travelling waves. The developed concepts are then applied to the individual current interruption case TRVs and associated reignitions or restrikes and to making capacitive and inductive circuits. All cases are well illustrated by real examples. At the end of the course, attendees will have an in-depth knowledge and understanding of the TRV requirements in IEC and IEEE standards and also know how to deal with exceptional cases.

What you will learn

• Fundamental basis for TRV’s and reignition and restriking transients
• Derivation of pole factors and amplitude factors associated with TRV’s as specified in IEC 62271-100 and IEEE C37 Series
• Calculation of the effects of adding surge capacitors to control TRV’s; effect of shunt capacitor banks, load sharing reactors and opening resistors
• Calculation of TRV’s and reignition and restriking transients associated with inductive and capacitive loads, respectively

Prerequisites

To benefit from the course, attendees should have a basic prior knowledge of the following:

• Electric circuit theory
• Trigonometric and exponential functions
• Symmetrical components
• IEC Standards 62271-100 and 62271-110 or IEEE C37 Series
• Use of Excel for equation based calculations

Who Should Attend

Electrical engineers seeking a fuller understanding of transients associated with current interruption in high voltage networks:

• System Operating and Planning Engineers
• Specification and Procurement Engineers
• Protection and Control Engineers
• Commissioning and Maintenance Engineers
• Asset Managers
• Consulting Engineers

Note: Please bring a calculator and a laptop loaded with Excel for classwork.

Instructor

David Peelo, PhD, P.Eng, C.Eng, FIEE – DF Peelo & Associates Ltd.

Dr. David Peelo graduated with honours in electrical engineering from University of Dublin in 1965. After working seven years with ASEA (now ABB) in Ludvika, Sweden, he joined BC Hydro in Vancouver, Canada in 1973. At BC Hydro, he first worked as a quality assurance inspection engineer and travelled widely for high voltage equipment inspections and testings. In 1981 he became a specialist engineer and was responsible for the application, specification and selection of all types of switching equipment from 12 kV to 500 kV. He investigated a number of field failures that ranged from the multiple failures of 12 kV circuit breakers to reactor switching failures at 500 kV. In 2004 the Eindhoven University of Technology awarded him a PhD degree for original research on current interruption in atmospheric air.

He is active in leadership roles in CIGRE and IEC. He is a past Canadian Member of CIGRE Study Committee A3 High Voltage Equipment and currently chairs the SC A3 Tutorial Advisory Group. He is the convener of IEC Maintenance Team 32 responsible for IEC 62271-110 Inductive Load Switching and convener of IEC Project Team 42 responsible for IEC 62271-305 Capacitive Current Switching Capability of Air-Insulated Disconnectors for Rated Voltages Above 52 kV. He is also a member of IEC Project Team 50 responsible for IEC 62271-306 Application Guide for IEC 62271-1 and IEC 62271-100 and Other Circuit Breaker Related Standards (to be published in 2012).

He has presented seminars and courses on circuit breakers and metal oxide surge arresters in a number of countries including Austria, Germany, France, Bosnia & Herzegovina, Australia, Singapore, India and China. He has published over 60 technical papers relating to switchgear and insulation coordination and metal oxide surge arrester application. Since 2001 he has been an independent consultant with clients in North America, Europe and Asia including both major utilities and manufacturers.

Cancellation Policy

Registered attendees unable to attend the event may designate a substitute, provided APEGBC receives written notification at least one business day prior to the event. Registration information for the substitute attendee should accompany the notice. If notice of cancellation of registration is received:

•  5 business days or more prior to the event, a refund will be processed
•  Less than 5 business days prior to the event, no refunds apply

Substitute registrants are permitted up to the day of the seminar and member/non-member fees will be applied. The organizers reserve the right to cancel the event if less than the minimum required participants have registered. Liability limited to registration fee.

APEGBC is an AIBC/CES registered provider offering an AIBC-Accredited activity for 19.5 Core Learning Units.

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