Modeling and Risk Assessment of Geomagnetically Induced Currents During Geomagnetic Storm in the 500 kV Power Grid of Guangxi, China

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F25%3A10510629" target="_blank" >RIV/00216208:11320/25:10510629 - isvavai.cz</a>

Výsledek na webu

<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=1FUrl8q4xT" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=1FUrl8q4xT</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1029/2025SW004646" target="_blank" >10.1029/2025SW004646</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Modeling and Risk Assessment of Geomagnetically Induced Currents During Geomagnetic Storm in the 500 kV Power Grid of Guangxi, China

Popis výsledku v původním jazyce

Geomagnetic storms can induce geomagnetically induced currents (GIC) in power systems, posing threats to grid security. In this study, a GIC calculation model for the 500 kV power grid in Guangxi, China, is developed based on one-dimensional (1D) and various three-dimensional (3D) magnetotelluric (MT) impedance data. The geomagnetic disturbance data of the &quot;solar superstorm&quot; on July 23-24, 2012, were simulated using the Space Weather Modeling Framework. Together with five real geomagnetic storm events, these data were used to estimate the GIC responses at each substation. The results show that the substation GIC peak calculated using the simulated geomagnetic disturbance data in July 2012 is as high as 243 A, which is comparable to the GIC peak calculated during the geomagnetic storm from October 29 to 31, 2003. Some substations experienced GIC exceeding 300 A during the geomagnetic storm on May 10-13, 2024. When the geomagnetic storm intensity reaches the level of the October 29-31, 2003 event, the differences in GIC estimates between 1D and 3D MT impedance data can be as large as 300 A. When storm intensity reaches the level of the May 10-13, 2024 event, the differences in GIC estimates derived from different 3D MT impedance data can be as much as 100 A. The GIC risk assessment identified six high-risk substations, all located in southeastern Guangxi. Among them, three coastal substations are recommended for prioritized deployment of GIC monitoring devices.

Název v anglickém jazyce

Modeling and Risk Assessment of Geomagnetically Induced Currents During Geomagnetic Storm in the 500 kV Power Grid of Guangxi, China

Popis výsledku anglicky

Geomagnetic storms can induce geomagnetically induced currents (GIC) in power systems, posing threats to grid security. In this study, a GIC calculation model for the 500 kV power grid in Guangxi, China, is developed based on one-dimensional (1D) and various three-dimensional (3D) magnetotelluric (MT) impedance data. The geomagnetic disturbance data of the &quot;solar superstorm&quot; on July 23-24, 2012, were simulated using the Space Weather Modeling Framework. Together with five real geomagnetic storm events, these data were used to estimate the GIC responses at each substation. The results show that the substation GIC peak calculated using the simulated geomagnetic disturbance data in July 2012 is as high as 243 A, which is comparable to the GIC peak calculated during the geomagnetic storm from October 29 to 31, 2003. Some substations experienced GIC exceeding 300 A during the geomagnetic storm on May 10-13, 2024. When the geomagnetic storm intensity reaches the level of the October 29-31, 2003 event, the differences in GIC estimates between 1D and 3D MT impedance data can be as large as 300 A. When storm intensity reaches the level of the May 10-13, 2024 event, the differences in GIC estimates derived from different 3D MT impedance data can be as much as 100 A. The GIC risk assessment identified six high-risk substations, all located in southeastern Guangxi. Among them, three coastal substations are recommended for prioritized deployment of GIC monitoring devices.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Space Weather

ISSN

1542-7390

e-ISSN

1542-7390

Svazek periodika

23

Číslo periodika v rámci svazku

11

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

22

Strana od-do

e2025SW004646

Kód UT WoS článku

001614357100001

EID výsledku v databázi Scopus

2-s2.0-105021560982