A state estimator including conventional and synchronized phasor measurements

Korres, GN; Manousakis, NM

dc.contributor.author	Korres, GN	en
dc.contributor.author	Manousakis, NM	en
dc.date.accessioned	2014-03-01T02:07:30Z
dc.date.available	2014-03-01T02:07:30Z
dc.date.issued	2012	en
dc.identifier.issn	00457906	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29565
dc.subject.other	Analytical equations	en
dc.subject.other	Branch currents	en
dc.subject.other	Bus systems	en
dc.subject.other	Estimation problem	en
dc.subject.other	Initialization stage	en
dc.subject.other	Numerical problems	en
dc.subject.other	Partial derivatives	en
dc.subject.other	Phasor measurements	en
dc.subject.other	Polar coordinate	en
dc.subject.other	State estimation algorithms	en
dc.subject.other	State Estimators	en
dc.subject.other	State variables	en
dc.subject.other	Synchronized phasor measurements	en
dc.subject.other	Weighted least squares	en
dc.subject.other	Algorithms	en
dc.subject.other	Phase measurement	en
dc.subject.other	State estimation	en
dc.title	A state estimator including conventional and synchronized phasor measurements	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.compeleceng.2011.12.003	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.compeleceng.2011.12.003	en
heal.publicationDate	2012	en
heal.abstract	This paper presents an effective weighted least square formulation for the solution of the state estimation problem, considering conventional as well as synchronized phasor measurements. The proposed algorithm is based on a reference-free formulation, using both rectangular and polar coordinates for branch current phasor measurements, and alleviates any numerical problems encountered during initialization stage of the state estimation algorithm. Analytical equations are provided for the conventional and the phasor measurements and their corresponding partial derivatives with respect to state variables. The proposed algorithm is tested with a seven bus system and is compared with the traditional state estimator. Simulation results show that the proposed algorithm improves the precision greatly and gets better behavior as compared with the traditional state estimator. © 2011 Elsevier Ltd. All rights reserved.	en
heal.journalName	Computers and Electrical Engineering	en
dc.identifier.doi	10.1016/j.compeleceng.2011.12.003	en
dc.identifier.volume	38	en
dc.identifier.issue	2	en
dc.identifier.spage	294	en
dc.identifier.epage	305	en