DOAJ Open Access 2023

Metrics and Strategies for Design of DC Bias Resilient Transformers

Akhil Prasad Scott D. Sudhoff Todd C. Monson Ganapathi Subramania

Abstrak

Geomagnetic disturbances (GMDs) give rise to geomagnetically induced currents (GICs) on the earth’s surface which find their way into power systems via grounded transformer neutrals. The quasi-dc nature of the GICs results in half-cycle saturation of the power grid transformers which in turn results in transformer failure, life reduction, and other adverse effects. Therefore, transformers need to be more resilient to dc excitation. This paper sets forth dc immunity metrics for transformers. Furthermore, this paper sets forth a novel transformer architecture and a design methodology which employs the dc immunity metrics to make it more resilient to dc excitation. This is demonstrated using a time-stepping 2D finite element analysis (FEA) simulation. It was found that a relatively small change in the core geometry significantly increases transformer resiliency with respect to dc excitation.

Topik & Kata Kunci

Distribution or transmission of electric power Production of electric energy or power. Powerplants. Central stations

Penulis (4)

Akhil Prasad

Scott D. Sudhoff

Todd C. Monson

Ganapathi Subramania

Format Sitasi

APA MLA BibTeX

Prasad, A., Sudhoff, S.D., Monson, T.C., Subramania, G. (2023). Metrics and Strategies for Design of DC Bias Resilient Transformers. https://doi.org/10.1109/OAJPE.2023.3303781

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Informasi Jurnal

Tahun Terbit: 2023
Sumber Database: DOAJ
DOI: 10.1109/OAJPE.2023.3303781
Akses: Open Access ✓