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Article: Stability analysis of power systems: A network synchronization perspective

TitleStability analysis of power systems: A network synchronization perspective
Authors
KeywordsLyapunov function
Power systems
Stability analysis
Synchronization
Issue Date2018
PublisherSociety for Industrial and Applied Mathematics. The Journal's web site is located at http://www.siam.org/journals/sicon.php
Citation
SIAM Journal on Control and Optimization, 2018, v. 56 n. 3, p. 1640-1664 How to Cite?
AbstractA power network is a large-scale and highly nonlinear dynamical complex system with generators and loads interconnected in a network structure. The transient stability of the power system that we study here refers to its ability for bus angles to remain in synchronism. The usual view of a stable power system is in terms of being able to return from the postfault state to a system equilibrium after severe failures or faults occur. In fact, power systems experience instantaneous load and generation fluctuations even in the absence of system faults. This paper reframes the stability definition in terms of continuous synchronous behavior and looks at the stability of power systems as the capability of withstanding these various fluctuations as external disturbances. The new stability definition is characterized by the property that angles stay cohesive with each other and frequencies of generators stay bounded. The main objective is to establish a stability analysis method based on a class of new energy functions. An important stability lemma is proposed for nonlinear systems which later is used to derive the phase cohesiveness and frequency boundedness conditions. Motivated by the recent study of complex networks, coupled phase oscillators, and synchronization of power systems, the paper also derives a purely algebraic condition showing explicitly how the stability of the power network is related to the underlying network topology, system parameters and affected by the disturbances.
Persistent Identifierhttp://hdl.handle.net/10722/264141
ISSN
2017 Impact Factor: 1.594
2015 SCImago Journal Rankings: 1.904
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorZhu, L-
dc.contributor.authorHill, DJ-
dc.date.accessioned2018-10-22T07:50:12Z-
dc.date.available2018-10-22T07:50:12Z-
dc.date.issued2018-
dc.identifier.citationSIAM Journal on Control and Optimization, 2018, v. 56 n. 3, p. 1640-1664-
dc.identifier.issn0363-0129-
dc.identifier.urihttp://hdl.handle.net/10722/264141-
dc.description.abstractA power network is a large-scale and highly nonlinear dynamical complex system with generators and loads interconnected in a network structure. The transient stability of the power system that we study here refers to its ability for bus angles to remain in synchronism. The usual view of a stable power system is in terms of being able to return from the postfault state to a system equilibrium after severe failures or faults occur. In fact, power systems experience instantaneous load and generation fluctuations even in the absence of system faults. This paper reframes the stability definition in terms of continuous synchronous behavior and looks at the stability of power systems as the capability of withstanding these various fluctuations as external disturbances. The new stability definition is characterized by the property that angles stay cohesive with each other and frequencies of generators stay bounded. The main objective is to establish a stability analysis method based on a class of new energy functions. An important stability lemma is proposed for nonlinear systems which later is used to derive the phase cohesiveness and frequency boundedness conditions. Motivated by the recent study of complex networks, coupled phase oscillators, and synchronization of power systems, the paper also derives a purely algebraic condition showing explicitly how the stability of the power network is related to the underlying network topology, system parameters and affected by the disturbances.-
dc.languageeng-
dc.publisherSociety for Industrial and Applied Mathematics. The Journal's web site is located at http://www.siam.org/journals/sicon.php-
dc.relation.ispartofSIAM Journal on Control and Optimization-
dc.rights© 2018 Society for Industrial and Applied Mathematics. First Published in SIAM Journal on Control and Optimization in volume 56, issue 3, published by the Society for Industrial and Applied Mathematics (SIAM).-
dc.subjectLyapunov function-
dc.subjectPower systems-
dc.subjectStability analysis-
dc.subjectSynchronization-
dc.titleStability analysis of power systems: A network synchronization perspective-
dc.typeArticle-
dc.identifier.emailHill, DJ: dhill@eee.hku.hk-
dc.identifier.authorityHill, DJ=rp01669-
dc.description.naturepublished_or_final_version-
dc.identifier.doi10.1137/17M1118646-
dc.identifier.scopuseid_2-s2.0-85049464027-
dc.identifier.hkuros293646-
dc.identifier.volume56-
dc.identifier.issue3-
dc.identifier.spage1640-
dc.identifier.epage1664-
dc.identifier.isiWOS:000437010100003-
dc.publisher.placeUnited States-

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