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/ Smart Grid Center > Events > Short Course “Electric Grid Impacts of Geomagnetic Disturbances” will be Held at TAMU on November 1-2, 2023 – Registration is Open

Short Course “Electric Grid Impacts of Geomagnetic Disturbances” will be Held at TAMU on November 1-2, 2023 – Registration is Open

Geomagnetic disturbances (GMDs), caused by solar coronal mass ejections, have the potential to significantly impact the operation of the high voltage electric grid by causing geomagnetically induced currents (GICs).  Over the last decade there has been significant research, industry interest, and regulatory concern about the impact of GMDs on the high voltage electric grid.  The purpose of this two-day short course is to put the GMD issue into proper perspective by providing a comprehensive coverage of what is currently known about the impact of GMDs on the grid, the tools being used for their assessment in planning and operations, and the current areas of research.  

The course philosophy is to provide in-depth coverage of the topics, but to do so using a practical, hands-on approach.   For example, the course provides a detailed consideration of what is needed to do the GMD assessments required for NERC TPL-007-4, and also contains an interactive, real-time simulation of the operational impacts of GMDs on the grid.  Throughout the course concepts will be illustrated using common industrial tools including those from EPRI and PowerWorld Simulator.  Collectively the three course instructors have wide experience in this area doing electric power system studies, software tool development, research and engineering education (Hours: CEU 1.4, PDH 14).

Who Should Attend

The course is designed to provide a comprehensive coverage of the impacts of GMDs on high voltage electric grids.  It is ideally suited for electrical engineers who work in the areas associated with either electric grid planning or operations, and for new graduates who would like to rapidly gain experience in the area of GMD grid impacts.   The course will also be useful for technical staff in regulatory agencies, for technical managers, for academics wishing to gain practical knowledge in this important area, and for graduate students interested in careers in the power industry.


  • Overview and history of electric grid geomagnetic disturbance impacts
  • Geomagnetic disturbances: from the Sun to the Ground
  • Power flow modeling of geomagnetically induced currents (GICs)
  • Ground model impact on geomagnetically induced currents
  • Hands-On:  interactive, real-time electric grid simulations of GMD impacts
  • Real-time monitoring, analysis and visualization of geomagnetically induced currents
  • NERC TPL 007 (Transmission System Planned Performance for Geomagnetic Disturbance Events)
  • Transformer modeling for GMD studies
  • Modeling of harmonics for GMD studies, including the EPRI Harmonics Analysis Capability Tool
  • Hands-On: EPRI Harmonics Analysis Capability Tool
  • Measures for GMD mitigation

Dates and Times

November 1-2, 2023, 8:00 a.m. – 5:00 p.m.


The short course will be held in person at the Center for Infrastructure Renewal on the RELLIS Campus.


Registration is open until October 30, 2023, or until the capacity is full.

Registration fee is $1,197. Discount of 25% is available for employees of Smart Grid Center member companies. For more information on the discount, contact [email protected].



Bob Arritt, P.E. is a Technical Executive at the Electric Power Research Institute (EPRI). He received a BS, magnum cum laude, in electrical engineering from West Virginia Institute of Technology in Montgomery, West Virginia. He received a MS degree in electrical engineering from Worcester Polytechnic Institute in Worcester, Massachusetts. His current research activities include leading the geomagnetic disturbance work (GMD), system transients, harmonics, and protection. Mr. Arritt joined EPRI in 2007. Prior to joining EPRI, Mr. Arritt worked for Raytheon in Sudbury, MA where he worked in the Power and Electronic Systems Department.  At Raytheon he was awarded the 2006 Raytheon Technical Honors Award for Peer and Leadership Recognition for Outstanding Individual Technical Contribution and also received a 2005 Raytheon Author’s Award for design of a Phase-Shifted Transformer for Harmonic Reduction. Since at EPRI, Bob has been awarded the Chauncey Award for his outstanding innovative and achievements in science and technology. Mr. Arritt holds a US Patent as the lead inventor for “Method for Detecting an Open-Phase Condition of a Transformer,” has authored several technical paper, is an IEEE Senior member, and Professional Engineer licensed in the State of Tennessee.

Tom Overbye, Ph.D. is a Professor and holder of the O’Donnell Foundation Chair III in the Department of Electrical and Computer Engineering at Texas A&M University (TAMU).  He received his BS, MS, and Ph.D. degrees in Electrical Engineering from the University of Wisconsin-Madison.  Before starting his academic career he was employed with Madison Gas and Electric Company, working in their planning and operations departments.  He is the original developer of PowerWorld Simulator (a widely used power system planning tool), a co-founder of PowerWorld Corporation, and an author of a widely used Power System Analysis and Design book.  He is a recipient of the IEEE Power and Energy Society Outstanding Power Engineering Educator Award, an EEE Fellow, and a member of the US National Academy of Engineering.  Tom is a leading researcher in the electric grid impacts of geomagnetic disturbances (GMDs) and was also responsible for the integration of GMD analysis into PowerWorld Simulator.  

Jonathan Snodgrass, Ph.D. is a Senior Research Engineer in the Department of Electrical and Computer Engineering at Texas A&M University (TAMU).  He received his BS and MS degrees from Texas A&M University, and his MS and PhD degrees from University of Wisconsin-Madison.  His research areas include power systems, network expansion and planning, analysis of geomagnetic disturbances (GMD) and electromagnetic pulse (EMP) effects on electric grids, and optimization and control of electric grids. He also worked for two years as an electrical design engineer at Zachry Engineering.