A robust method for equality constrained state estimation

Korres, GN

dc.contributor.author	Korres, GN	en
dc.date.accessioned	2014-03-01T01:17:23Z
dc.date.available	2014-03-01T01:17:23Z
dc.date.issued	2002	en
dc.identifier.issn	0885-8950	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14502
dc.subject	Critical measurements	en
dc.subject	Equality constraints	en
dc.subject	Maximal observable islands	en
dc.subject	Observability analysis	en
dc.subject	Positive definite matrix	en
dc.subject	Static state estimation	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.other	Iterative methods	en
dc.subject.other	Least squares approximations	en
dc.subject.other	Matrix algebra	en
dc.subject.other	Problem solving	en
dc.subject.other	State estimation	en
dc.subject.other	Constrained state estimation	en
dc.subject.other	Electric power systems	en
dc.title	A robust method for equality constrained state estimation	en
heal.type	journalArticle	en
heal.identifier.primary	10.1109/TPWRS.2002.1007897	en
heal.identifier.secondary	http://dx.doi.org/10.1109/TPWRS.2002.1007897	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	This paper presents a robust method for the solution of the equality constrained state estimation problem. The problem is formulated as a weighted least squares (WLS) problem with equality constraints. Traditionally the problem is solved iteratively by the normal equations with equality constraints (NE/C). One problem of NE/C is that the gain matrices are not positive definite and extra logic is required to process the zero pivots during Gaussian elimination. In this paper, positive definite gain matrices are formulated and triangularization is performed symbolically using sparsity techniques. The method is illustrated with a six-bus system and the IEEE 14-bus system.	en
heal.publisher	IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC	en
heal.journalName	IEEE Transactions on Power Systems	en
dc.identifier.doi	10.1109/TPWRS.2002.1007897	en
dc.identifier.isi	ISI:000176062900014	en
dc.identifier.volume	17	en
dc.identifier.issue	2	en
dc.identifier.spage	305	en
dc.identifier.epage	314	en