Impact of Geomagnetically Induced Current (GIC) on Power Transformers & Power Systems

21 Jul 2022
M. Olson, K. Patil, A. Commander, T. Hartmann, A. O'Malley, R. Girgis, G. Hoffman, S. Digby
Primary Committee:
Ramsis Girgis
Session Type:
Video Length / Slide Count:
Pages: 100
Provide the industry with an overview of latest activities in the area of GIC. These include GIC regulations, GIC Standards, GIC development activities, and studies performed of impact of GIC & GIC Thermal Capabilities of Power Transformers. The following topics will be covered:
1. NERC’s TPL007 Standard, its requirements, Tasks, and Timeline
2. System modelling and calculation of GIC Flow in power systems
3. GIC Transformer Fleet Assessment – Case study
4. Other Utility experiences with GIC Fleet Assessment
5. Thermal GIC Capability of Power Transformers
6. FirstEnergy’s experience with GIC System Study
7. On-Line Monitoring of GIC and its Thermal impact in Real Time
8. Overview of IEEE GMD Guide; C57.163-2016 and planned updates

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