Power System Modeling and Fault Analysis using Symmetrical Components

Power & Energy Society

Speakers: Dean Sorensen, Principal Engineer, Protection Policy and Support, National Grid, Waltham, MA, USA

Time: Refreshments start at 6pm, talk commences at 6:30pm

The method of symmetrical components provides a tool to study systems with unbalanced phasors. While this method derives from a paper authored by Charles Fortescue back in 1913, a working knowledge of this method is still essential for the power engineer today. This presentation will explore the theory of symmetrical components for an arbitrary number of phases while focusing on familiar 3-phase systems. The discussion will provide a basis for modeling power system elements such as lines, transformers, sources and loads. The discussion will then move to modeling both balanced and unbalanced faults. This presentation aims to provide details sometimes not found in textbooks such as why Z1 = Z2 for lines and transformers but not for generators and motors.

Biography: Dean Sorensen received a B.S. degree with distinction in Electrical Engineering in 1984 and an M.S. degree in Power Systems Management in 2002 both from Worcester Polytechnic Institute (WPI). He is a member of IEEE and is a registered professional engineer in the state of Massachusetts. Dean has over 30 years of experience in the power industry serving in various engineering capacities in transmission, distribution and generation primarily in the areas of protection and controls and power quality. Dean is a principal engineer in the Department of Protection Policy and Support at National Grid. Dean has also been on the faculty of WPI since 2011 as an adjunct instructor teaching graduate courses related to power system protection.

Free and Open to the Public – No Registration Required

Visit the IEEE PES Boston Chapter website for further details – http://www.ieeepesboston.org/