Gain and phase margins based delay-dependent stability analysis of single-area load frequency control system with constant communication time delay

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dc.authorid0000-0002-0057-2522
dc.contributor.authorSonmez, Sahin
dc.contributor.authorAyasun, Saffet
dc.date.accessioned2019-08-01T13:38:39Z
dc.date.available2019-08-01T13:38:39Z
dc.date.issued2018
dc.departmentNiğde ÖHÜ
dc.description.abstractThis paper presents a comprehensive stability analysis of a single-area load frequency control (LFC) system with constant communication delays. First, an exact method that takes into account both gain and phase margins is proposed to determine stability delay margins in terms of system and controller parameters. The method implements an elimination procedure to transform transcendental characteristic equation into a standard polynomial of the crossing frequency. The real roots of this new standard polynomial exactly match with the purely imaginary roots (crossing frequencies) of the original characteristic equation with transcendental terms. Secondly, an effective and simple graphical method is implemented to compute all stabilizing Proportional Integral (PI) controller gains for a given time delay. The approach is based on extracting stability region and the stability boundary locus in the PI controller parameter space having user defined gain and phase margins, and relative stability. The time-domain simulation studies indicate that the proposed scheme improves dynamic performance gain and phase margins are included in delay-dependent stability analysis of single-area LFC with communication delays.
dc.identifier.doi10.1177/0142331217690221
dc.identifier.endpage1710
dc.identifier.issn0142-3312
dc.identifier.issn1477-0369
dc.identifier.issue5
dc.identifier.scopus2-s2.0-85044157131
dc.identifier.scopusqualityQ2
dc.identifier.startpage1701
dc.identifier.urihttps://dx.doi.org/10.1177/0142331217690221
dc.identifier.urihttps://hdl.handle.net/11480/3479
dc.identifier.volume40
dc.identifier.wosWOS:000429970400029
dc.identifier.wosqualityQ3
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthor[0-Belirlenecek]
dc.language.isoen
dc.publisherSAGE PUBLICATIONS LTD
dc.relation.ispartofTRANSACTIONS OF THE INSTITUTE OF MEASUREMENT AND CONTROL
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectControl systems design
dc.subjectdelay margin
dc.subjectgain and phase margins
dc.subjectpower system control
dc.subjectpower system stability
dc.subjectstability region
dc.subjecttime delay systems
dc.titleGain and phase margins based delay-dependent stability analysis of single-area load frequency control system with constant communication time delay
dc.typeArticle

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