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Article: Comparison of linear approximations for the dynamic security region of power systems

TitleComparison of linear approximations for the dynamic security region of power systems
Authors
KeywordsDynamic security region
Linear approximation
Stability region
Transient stability
Issue Date2006
Citation
Dianli Xitong Zidonghua/Automation Of Electric Power Systems, 2006, v. 30 n. 5, p. 9-13 How to Cite?
AbstractThis paper compares the performance of three types of linear approximations for the dynamic security region of power system with network-reduction model. The three types of linear approximations are the Q-linear approximation based on the quadratic approximation of stability region, the L-linear approximation based on the linear approximation of stability region and the LO-linear approximation based on the invariant assumption of the normal vector of stability region. The linear approximations are obtained with a critical point just on the boundary of dynamic security region. In the comparison, the linear approximation obtained by the least square curve fitting method is used as the benchmark. Furthermore, for the dynamic security region in low dimension, the figure with the searched critical point is used to directly compare the accuracy of different approaches. Simulations in IEEE 3-machine 9-bus system and 10-machine 39-bus New England system show that, with a given critical point, all the three types of approximations display fairly accurate estimation. Furthermore, from the computational viewpoint, the L-linear and the LO-linear method with less computational burden are two alternative choices to approximate the dynamic security region.
Persistent Identifierhttp://hdl.handle.net/10722/73935
ISSN
2015 SCImago Journal Rankings: 0.772
References

 

DC FieldValueLanguage
dc.contributor.authorXue, ACen_HK
dc.contributor.authorHu, Wen_HK
dc.contributor.authorMei, SWen_HK
dc.contributor.authorNi, YXen_HK
dc.contributor.authorWu, FFen_HK
dc.date.accessioned2010-09-06T06:56:11Z-
dc.date.available2010-09-06T06:56:11Z-
dc.date.issued2006en_HK
dc.identifier.citationDianli Xitong Zidonghua/Automation Of Electric Power Systems, 2006, v. 30 n. 5, p. 9-13en_HK
dc.identifier.issn1000-1026en_HK
dc.identifier.urihttp://hdl.handle.net/10722/73935-
dc.description.abstractThis paper compares the performance of three types of linear approximations for the dynamic security region of power system with network-reduction model. The three types of linear approximations are the Q-linear approximation based on the quadratic approximation of stability region, the L-linear approximation based on the linear approximation of stability region and the LO-linear approximation based on the invariant assumption of the normal vector of stability region. The linear approximations are obtained with a critical point just on the boundary of dynamic security region. In the comparison, the linear approximation obtained by the least square curve fitting method is used as the benchmark. Furthermore, for the dynamic security region in low dimension, the figure with the searched critical point is used to directly compare the accuracy of different approaches. Simulations in IEEE 3-machine 9-bus system and 10-machine 39-bus New England system show that, with a given critical point, all the three types of approximations display fairly accurate estimation. Furthermore, from the computational viewpoint, the L-linear and the LO-linear method with less computational burden are two alternative choices to approximate the dynamic security region.en_HK
dc.languageengen_HK
dc.relation.ispartofDianli Xitong Zidonghua/Automation of Electric Power Systemsen_HK
dc.subjectDynamic security regionen_HK
dc.subjectLinear approximationen_HK
dc.subjectStability regionen_HK
dc.subjectTransient stabilityen_HK
dc.titleComparison of linear approximations for the dynamic security region of power systemsen_HK
dc.typeArticleen_HK
dc.identifier.emailNi, YX: yxni@eee.hku.hken_HK
dc.identifier.emailWu, FF: ffwu@eee.hku.hken_HK
dc.identifier.authorityNi, YX=rp00161en_HK
dc.identifier.authorityWu, FF=rp00194en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-33646345373en_HK
dc.identifier.hkuros119181en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33646345373&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume30en_HK
dc.identifier.issue5en_HK
dc.identifier.spage9en_HK
dc.identifier.epage13en_HK
dc.publisher.placeChinaen_HK
dc.identifier.scopusauthoridXue, AC=7005988274en_HK
dc.identifier.scopusauthoridHu, W=36062809200en_HK
dc.identifier.scopusauthoridMei, SW=7102846252en_HK
dc.identifier.scopusauthoridNi, YX=7402910021en_HK
dc.identifier.scopusauthoridWu, FF=7403465107en_HK

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