Risk assessment of power system oscillation instability based on geomagnetic storm events in the 24th solar cycle

Abstract When studying the harm of geomagnetic storms to the power system, the focus is often placed on the influence of transformers reactive power loss (GIC‐Q) caused by geomagnetic induced current (GIC) on voltage fluctuation. GIC‐Q, as a reactive load, can cause power flow changes, and the small...

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Autores principales:	Zezhong Wang, Yuan Si, Lianguang Liu
Formato:	article
Lenguaje:	EN
Publicado:	Wiley 2022
Materias:	Distribution or transmission of electric power TK3001-3521 Production of electric energy or power. Powerplants. Central stations TK1001-1841
Acceso en línea:	https://doaj.org/article/6aa0f85054ed400cb5dc95740224f524
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spelling	oai:doaj.org-article:6aa0f85054ed400cb5dc95740224f5242021-12-02T14:01:23ZRisk assessment of power system oscillation instability based on geomagnetic storm events in the 24th solar cycle1751-86951751-868710.1049/gtd2.12283https://doaj.org/article/6aa0f85054ed400cb5dc95740224f5242022-01-01T00:00:00Zhttps://doi.org/10.1049/gtd2.12283https://doaj.org/toc/1751-8687https://doaj.org/toc/1751-8695Abstract When studying the harm of geomagnetic storms to the power system, the focus is often placed on the influence of transformers reactive power loss (GIC‐Q) caused by geomagnetic induced current (GIC) on voltage fluctuation. GIC‐Q, as a reactive load, can cause power flow changes, and the small disturbance stability is affected by the power flow distribution before disturbance, so GIC‐Q connects geomagnetic storms with small disturbance stability. In this study, the probability distribution function of induced geoelectric fields is established, and the sample data is obtained by sampling. Combined with the GIC benchmark network model, multiple sets of GIC‐Q in each substation are calculated and added to the system one by one to study the influence of geomagnetic storms on the oscillation characteristic parameters and establish the risk index of small disturbance instability. The result shows that the risk index value of oscillation instability in the occurrence of geomagnetic storms increases both in the AC system and the AC/DC hybrid system, but the increased range of risk value of local oscillation instability decreases with the addition of DC systems. The research results can provide a reference for evaluating the influence of geomagnetic storms on the stable operation of power systems.Zezhong WangYuan SiLianguang LiuWileyarticleDistribution or transmission of electric powerTK3001-3521Production of electric energy or power. Powerplants. Central stationsTK1001-1841ENIET Generation, Transmission & Distribution, Vol 16, Iss 1, Pp 137-148 (2022)
institution	DOAJ
collection	DOAJ
language	EN
topic	Distribution or transmission of electric power TK3001-3521 Production of electric energy or power. Powerplants. Central stations TK1001-1841
spellingShingle	Distribution or transmission of electric power TK3001-3521 Production of electric energy or power. Powerplants. Central stations TK1001-1841 Zezhong Wang Yuan Si Lianguang Liu Risk assessment of power system oscillation instability based on geomagnetic storm events in the 24th solar cycle
description	Abstract When studying the harm of geomagnetic storms to the power system, the focus is often placed on the influence of transformers reactive power loss (GIC‐Q) caused by geomagnetic induced current (GIC) on voltage fluctuation. GIC‐Q, as a reactive load, can cause power flow changes, and the small disturbance stability is affected by the power flow distribution before disturbance, so GIC‐Q connects geomagnetic storms with small disturbance stability. In this study, the probability distribution function of induced geoelectric fields is established, and the sample data is obtained by sampling. Combined with the GIC benchmark network model, multiple sets of GIC‐Q in each substation are calculated and added to the system one by one to study the influence of geomagnetic storms on the oscillation characteristic parameters and establish the risk index of small disturbance instability. The result shows that the risk index value of oscillation instability in the occurrence of geomagnetic storms increases both in the AC system and the AC/DC hybrid system, but the increased range of risk value of local oscillation instability decreases with the addition of DC systems. The research results can provide a reference for evaluating the influence of geomagnetic storms on the stable operation of power systems.
format	article
author	Zezhong Wang Yuan Si Lianguang Liu
author_facet	Zezhong Wang Yuan Si Lianguang Liu
author_sort	Zezhong Wang
title	Risk assessment of power system oscillation instability based on geomagnetic storm events in the 24th solar cycle
title_short	Risk assessment of power system oscillation instability based on geomagnetic storm events in the 24th solar cycle
title_full	Risk assessment of power system oscillation instability based on geomagnetic storm events in the 24th solar cycle
title_fullStr	Risk assessment of power system oscillation instability based on geomagnetic storm events in the 24th solar cycle
title_full_unstemmed	Risk assessment of power system oscillation instability based on geomagnetic storm events in the 24th solar cycle
title_sort	risk assessment of power system oscillation instability based on geomagnetic storm events in the 24th solar cycle
publisher	Wiley
publishDate	2022
url	https://doaj.org/article/6aa0f85054ed400cb5dc95740224f524
work_keys_str_mv	AT zezhongwang riskassessmentofpowersystemoscillationinstabilitybasedongeomagneticstormeventsinthe24thsolarcycle AT yuansi riskassessmentofpowersystemoscillationinstabilitybasedongeomagneticstormeventsinthe24thsolarcycle AT lianguangliu riskassessmentofpowersystemoscillationinstabilitybasedongeomagneticstormeventsinthe24thsolarcycle
_version_	1718392145885265920

Risk assessment of power system oscillation instability based on geomagnetic storm events in the 24th solar cycle

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