Observability analysis for power systems including conventional and phasor measurements

Manousakis, NM; Korres, GN

dc.contributor.author	Manousakis, NM	en
dc.contributor.author	Korres, GN	en
dc.date.accessioned	2014-03-01T02:52:43Z
dc.date.available	2014-03-01T02:52:43Z
dc.date.issued	2010	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36018
dc.subject	Flow islands	en
dc.subject	Gram matrix	en
dc.subject	Observability restoration	en
dc.subject	Phasor measurement units	en
dc.subject	Triangular factors	en
dc.subject.other	Boundary bus	en
dc.subject.other	Branch currents	en
dc.subject.other	Bus systems	en
dc.subject.other	Bus voltage	en
dc.subject.other	Conventional measurements	en
dc.subject.other	Direct method	en
dc.subject.other	Flow islands	en
dc.subject.other	Gram matrices	en
dc.subject.other	Gram matrix	en
dc.subject.other	Injection measurement	en
dc.subject.other	Jacobians	en
dc.subject.other	Measurement system	en
dc.subject.other	Observability analysis	en
dc.subject.other	Phasor measurement unit	en
dc.subject.other	Phasor measurement units	en
dc.subject.other	Phasor measurements	en
dc.subject.other	Power systems	en
dc.subject.other	Reduced order	en
dc.subject.other	Reduced size	en
dc.subject.other	Triangular factorization	en
dc.subject.other	Triangular factors	en
dc.subject.other	Unobservable	en
dc.subject.other	Direct injection	en
dc.subject.other	Electric power system interconnection	en
dc.subject.other	Energy conversion	en
dc.subject.other	Jacobian matrices	en
dc.subject.other	Numerical methods	en
dc.subject.other	Observability	en
dc.subject.other	Phase measurement	en
dc.subject.other	Restoration	en
dc.subject.other	Units of measurement	en
dc.subject.other	Flow measurement	en
dc.title	Observability analysis for power systems including conventional and phasor measurements	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1049/cp.2010.0892	en
heal.identifier.secondary	http://dx.doi.org/10.1049/cp.2010.0892	en
heal.publicationDate	2010	en
heal.abstract	This paper presents a numerical method for observability analysis of a measurement system including phasor measurement units (PMUs) as well as conventional measurements. Traditional power flow measurements and branch current phasor measurements are used to build topologically flow islands that, in turn, are used to construct a reduced network. Boundary injections at flow islands and bus voltage phasors are considered to form a reduced size Jacobian matrix. Observability checking is carried out analyzing the pivots encountered during the triangular factorization of a Gram matrix associated with this reduced order Jacobian. The additional measurements, that restore the global observability of an unobservable system, are provided by a direct method, using the triangular factors of a Gram matrix associated with a reduced Jacobian including existing and candidate traditional injection measurements as well as PMUs, at boundary buses of the flow islands. The IEEE 14-bus system demonstrates the features of the proposed method.	en
heal.journalName	IET Conference Publications	en
dc.identifier.doi	10.1049/cp.2010.0892	en
dc.identifier.volume	2010	en
dc.identifier.issue	572 CP	en