Harmonic Propagation and Voltage Stability in a Power System during Geomagnetic Disturbances

Space weather-induced geomagnetic disturbances (GMDs) drive geomagnetically-induced current (GIC) to flow into electric power networks, causing undesirable effects such as reactive power losses, voltage drop, current and voltage harmonics. A combination of these effects triggered blackouts in the Hy...

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Bibliographic Details
Published in2024 IEEE Power & Energy Society General Meeting (PESGM) pp. 1 - 5
Main Authors Ademola, Adedasola A., Pinceti, Andrea, Korede, Ibukunoluwa O., Vance, Katelynn A., Gardner, R. Matthew, Liu, Yilu
Format Conference Proceeding
LanguageEnglish
Published IEEE 21.07.2024
Subjects
Contingency Analysis
Contingency management
Distortion
Electric potential
Geomagnetic Disturbance
Geomagnetic storms
Geomagnetically induced current
Harmonic analysis
Harmonics
Power system harmonics
Power system stability
Stability analysis
Transformers
Voltage
Voltage Stability
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Summary:Space weather-induced geomagnetic disturbances (GMDs) drive geomagnetically-induced current (GIC) to flow into electric power networks, causing undesirable effects such as reactive power losses, voltage drop, current and voltage harmonics. A combination of these effects triggered blackouts in the Hydro-Quebec grid in 1989 and the Swedish grid in 2003. Given that the Dominion Energy Virginia (DEV) grid is at moderate risk of GMD due to its location, a system-wide vulnerability study was performed to assess that risk. The work included analyzing harmonic propagation from GIC-aflected transformers to the rest of the system and evaluating the voltage stability margins (VSMs) for various system contingencies during extreme GMD scenarios. Results showed that certain portions of the grid exhibited voltage distortion considerably above acceptable limits, but harmonic screening of grid equipment showed that they are not vulnerable to damage. This work also illustrates the potential of GMDs to reduce VSM and exacerbate system contingencies.
ISSN:1944-9933
DOI:10.1109/PESGM51994.2024.10688910