State estimation in Multi-Microgrids

Korres, GN; Hatziargyriou, ND; Katsikas, PJ

dc.contributor.author	Korres, GN	en
dc.contributor.author	Hatziargyriou, ND	en
dc.contributor.author	Katsikas, PJ	en
dc.date.accessioned	2014-03-01T01:37:08Z
dc.date.available	2014-03-01T01:37:08Z
dc.date.issued	2011	en
dc.identifier.issn	1430-144X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21455
dc.subject	distribution network	en
dc.subject	load estimate	en
dc.subject	Multi-Microgrid	en
dc.subject	network split	en
dc.subject	network topology	en
dc.subject	state estimation	en
dc.subject.classification	Engineering, Electrical & Electronic	en
dc.subject.other	Distribution network	en
dc.subject.other	load estimate	en
dc.subject.other	Multi-Microgrid	en
dc.subject.other	network split	en
dc.subject.other	network topology	en
dc.subject.other	Electric network topology	en
dc.subject.other	Energy management	en
dc.subject.other	Measurement errors	en
dc.subject.other	Network management	en
dc.subject.other	State estimation	en
dc.subject.other	Time measurement	en
dc.subject.other	Estimation	en
dc.title	State estimation in Multi-Microgrids	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/etep.442	en
heal.identifier.secondary	http://dx.doi.org/10.1002/etep.442	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	In this paper, a Multi-Microgrid state estimator is proposed, following the concept of distribution state estimators, where a limited number of real-time measurements are available. Since state estimation (SE) solution is impossible with these limited measurements, forecasted values of load injections at buses remote from the substations are needed, for a given period that coincides with the real-time measurements. The proposed state estimator is based on the traditional WLS algorithm and uses few real-time measurements, mainly at the primary (MV) or secondary (LV) substations and DG locations, and pseudo-measurements for the load bus estimates. The impact of the accuracy of distributed generation (DG) voltage magnitude measurements and load pseudo measurements on the bus voltage estimates is also investigated. Grid-connected and islanded modes are simulated and monitored. Topology errors at the main substations and feeders, where there is sufficient measurement redundancy, are also examined. Test results are given for a 55-bus distribution network including DG. Copyright (C) 2010 John Wiley & Sons, Ltd.	en
heal.publisher	WILEY-BLACKWELL	en
heal.journalName	European Transactions on Electrical Power	en
dc.identifier.doi	10.1002/etep.442	en
dc.identifier.isi	ISI:000288855900004	en
dc.identifier.volume	21	en
dc.identifier.issue	2	en
dc.identifier.spage	1178	en
dc.identifier.epage	1199	en