Work

The Geomagnetically Induced Current Extremal Values Estimation Based on Baygazan Magnetical Station Data

Year: 2025

Type: article

Abstract: Based on the Baygazan magnetic station data, geomagnetically induced currents (GIC) in the 500 kV Sayano-Shushenskaya HPP (SSHPP) – Novokuznetsk substation power line were simulated during very strong and extreme magnetic storms (planetary geomagnetic index activity ≥ 8) for the period 2012–2024. The 1D Earth's crust conductivity distribution model is used for calculation. It is shown that, the GIC in the transformer neutral can reach 17 A for the SSHPP, and 8 A for the Novokuznetsk substation. The main sources of GIC are rapid high-amplitude bay-like disturbances (up to 17 A) and SSC (up to 5 A). A specificity has been found in the reaction of power line grounding nodes to geomagnetic activity caused by the network topology. A noticeable contribution of various pulsations classes to the GIC generation (up to 5 A) was noted.

Source: Rossijskij žurnal nauk o zemle/Russian journal of earth sciences

DOI: 10.2205/2025es000985

Authors: Aleksey Gvozdarev, Evgeniy Uchaykin

Institutions: Institute of Cosmophysical Research and Radio Wave Propagation, Gorno-Altaisk State University

Language: English

Topic: Ionosphere and magnetosphere dynamics

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

SDG: Industry, innovation and infrastructure

Open Access status: diamond

OpenAlex ID: W7128426913

FWCI: 0.484

Cites: 42

Cited by: 1

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