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Impact of Geomagnetically Induced Currents on High Voltage Transformers in Malaysian Power Network and Its Mitigation

Computer aided design; Earth (planet); Electric grounding; Electric power transmission networks; Geomagnetism; Power transformers; Short circuit currents; Solar energy; Timing circuits; Transformer protection; Circuit faults; Computational modelling; Direct-current; Electro-magnetic transient; Geoma...

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Main Authors: Khurshid Z.M., Ab Aziz N.F., Rhazali Z.A., Ab Kadir M.Z.A.
Other Authors: 57199152644
Format: Article
Published: Institute of Electrical and Electronics Engineers Inc. 2023
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spelling my.uniten.dspace-264292023-05-29T17:10:26Z Impact of Geomagnetically Induced Currents on High Voltage Transformers in Malaysian Power Network and Its Mitigation Khurshid Z.M. Ab Aziz N.F. Rhazali Z.A. Ab Kadir M.Z.A. 57199152644 57221906825 16022936300 25947297000 Computer aided design; Earth (planet); Electric grounding; Electric power transmission networks; Geomagnetism; Power transformers; Short circuit currents; Solar energy; Timing circuits; Transformer protection; Circuit faults; Computational modelling; Direct-current; Electro-magnetic transient; Geomagnetic disturbance; Geomagnetically induced currents; High-voltage transformers; Malaysian power network; Malaysians; Power networks; Power system computer aided designs; Power system computer-aided design for electromagnetic transient including direct current; PSCAD; Software; Space weather; Electric network analysis Geomagnetically induced current (GIC) is a ground end manifestation of geomagnetic disturbances (GMDs) and space weather arising from solar activity, which causes half-cycle saturation and represents a potential hazard for a stable and safe operation of earthed high voltage (HV) power transformers. Previous studies have shown that the impact of GIC is not limited to high and mid-latitude regions, but it can also affect power systems located in lower geographic latitudes. This work presents the impact of GIC on HV transformers in the Malaysian power network. A detailed power network was modelled using the Power System Computer-Aided Design for Electromagnetic Transients including Direct Current (PSCAD/EMTDC) software. The entire network was subjected to a geoelectric field strength of 20 V/km at the northward and eastward directions. The GIC analysis has determined the most critical locations in the power network model that are prone to high GICs. The simulation results demonstrated that the most vulnerable substations to GMD events and experience the most severe GICs were those located in the middle of the Malaysian power network. The GIC effects and saturation levels of four transformers' types in these locations have been investigated over the transmission network. Under the GIC condition, transformers were driven into half-cycle saturation and their reactive power consumption drastically increased. Thus, conventional GIC mitigation systems based on neutral blocking devices (NBDs) were proposed and connected to the power transformers to block the GIC flow in their neutral paths. It was found that the GIC protection modes in the mitigation systems effectively eliminate the injected GICs in the neutral paths and are able to prevent the saturation occurrence of the transformers. � 2013 IEEE. Final 2023-05-29T09:10:26Z 2023-05-29T09:10:26Z 2021 Article 10.1109/ACCESS.2021.3135883 2-s2.0-85121837891 https://www.scopus.com/inward/record.uri?eid=2-s2.0-85121837891&doi=10.1109%2fACCESS.2021.3135883&partnerID=40&md5=30f37a6135d2b159158d6b24f6c5b6f3 https://irepository.uniten.edu.my/handle/123456789/26429 9 167204 167217 All Open Access, Gold Institute of Electrical and Electronics Engineers Inc. Scopus
institution Universiti Tenaga Nasional
building UNITEN Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tenaga Nasional
content_source UNITEN Institutional Repository
url_provider http://dspace.uniten.edu.my/
description Computer aided design; Earth (planet); Electric grounding; Electric power transmission networks; Geomagnetism; Power transformers; Short circuit currents; Solar energy; Timing circuits; Transformer protection; Circuit faults; Computational modelling; Direct-current; Electro-magnetic transient; Geomagnetic disturbance; Geomagnetically induced currents; High-voltage transformers; Malaysian power network; Malaysians; Power networks; Power system computer aided designs; Power system computer-aided design for electromagnetic transient including direct current; PSCAD; Software; Space weather; Electric network analysis
author2 57199152644
author_facet 57199152644
Khurshid Z.M.
Ab Aziz N.F.
Rhazali Z.A.
Ab Kadir M.Z.A.
format Article
author Khurshid Z.M.
Ab Aziz N.F.
Rhazali Z.A.
Ab Kadir M.Z.A.
spellingShingle Khurshid Z.M.
Ab Aziz N.F.
Rhazali Z.A.
Ab Kadir M.Z.A.
Impact of Geomagnetically Induced Currents on High Voltage Transformers in Malaysian Power Network and Its Mitigation
author_sort Khurshid Z.M.
title Impact of Geomagnetically Induced Currents on High Voltage Transformers in Malaysian Power Network and Its Mitigation
title_short Impact of Geomagnetically Induced Currents on High Voltage Transformers in Malaysian Power Network and Its Mitigation
title_full Impact of Geomagnetically Induced Currents on High Voltage Transformers in Malaysian Power Network and Its Mitigation
title_fullStr Impact of Geomagnetically Induced Currents on High Voltage Transformers in Malaysian Power Network and Its Mitigation
title_full_unstemmed Impact of Geomagnetically Induced Currents on High Voltage Transformers in Malaysian Power Network and Its Mitigation
title_sort impact of geomagnetically induced currents on high voltage transformers in malaysian power network and its mitigation
publisher Institute of Electrical and Electronics Engineers Inc.
publishDate 2023
_version_ 1806423325389357056
score 13.188404

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