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Geomagnetically Induced Current Analysis in Malaysian Power Transmission System

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dc.contributor.authorKhurshid Z.M.en_US
dc.contributor.authorAb Aziz N.F.en_US
dc.contributor.authorRhazali Z.A.en_US
dc.contributor.authorAb Kadir M.Z.A.en_US
dc.contributor.authorid57199152644en_US
dc.contributor.authorid57221906825en_US
dc.contributor.authorid16022936300en_US
dc.contributor.authorid25947297000en_US
dc.date.accessioned2023-05-29T09:39:28Z
dc.date.available2023-05-29T09:39:28Z
dc.date.issued2022
dc.descriptionElectric fields; Electric grounding; Electric network analysis; Electric power transmission networks; Electric substations; Intercalation; Power transformers; Reactive power; Risk assessment; Solar energy; Timing circuits; Circuit faults; Conductivity; Geomagnetic disturbance; Geomagnetically induced currents; High voltage techniques; High-voltage transformers; Malaysian power network; Malaysians; Power; Power grids; Power networks; Power system; PSCAD/EMTDC; Space weather; Substation; Geomagnetismen_US
dc.description.abstractFor many decades, Geomagnetically Induced Current (GIC) has posed a significant risk over the electrical power grid infrastructures worldwide. The phenomenon occurs due to geomagnetic disturbance (GMD) and related space weather events arising from solar activity. It represents a potential hazard to the secure and safe operation of electrical power grids by causing half-cycle saturation of grounded High Voltage (HV) power transformers, relay misoperation, and increased reactive power demand in the power systems. Previous studies have shown that the occurrence of intense GIC is not limited to high and mid-latitude regions, but powerful space weather events can also result in intense GIC in power systems located in lower geographic latitudes. This study aims to estimate GIC and its impacts on a Malaysian power grid. A network model of the grid was constructed by using the Power System Simulator for Engineering (PSS/E). This represents the first attempt to study GICs in south-eastern Asian power grids since a region is considered to have low GIC risk up to now. During the analysis, firstly, we exposed the entire power network which includes 500 kV, 275 kV, and 132 kV system voltages to different geoelectric field strengths in the 0-180� directions. The applied geoelectric fields were calculated based on benchmark value for 1 in 100 years of GMD events. Then we disconnected the 132 kV low voltage systems from the network model to investigate their influence on the calculated GICs. The results demonstrated that the most vulnerable substations to GMD events and experienced large GICs were those located in the middle of the Malaysian power network. The maximum GIC was recorded at substation 22 with the value of 44.58 A due to the peak electric field of 1.2 V/km at 100� field direction. Also, the results showed that the calculated GICs slightly increased when 132 kV systems were removed from the power network, especially at the substations directly connected to these systems. � 2013 IEEE.en_US
dc.description.natureFinalen_US
dc.identifier.doi10.1109/ACCESS.2022.3215266
dc.identifier.epage110216
dc.identifier.scopus2-s2.0-85140709615
dc.identifier.spage110205
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-85140709615&doi=10.1109%2fACCESS.2022.3215266&partnerID=40&md5=ee24d9c1bef9166d872227801e779537
dc.identifier.urihttps://irepository.uniten.edu.my/handle/123456789/27094
dc.identifier.volume10
dc.publisherInstitute of Electrical and Electronics Engineers Inc.en_US
dc.relation.ispartofAll Open Access, Gold
dc.sourceScopus
dc.sourcetitleIEEE Access
dc.titleGeomagnetically Induced Current Analysis in Malaysian Power Transmission Systemen_US
dc.typeArticleen_US
dspace.entity.typePublication
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