Improved load-frequency control contribution of variable speed variable pitch wind generators

Moutis, P; Papathanassiou, SA; Hatziargyriou, ND

dc.contributor.author	Moutis, P	en
dc.contributor.author	Papathanassiou, SA	en
dc.contributor.author	Hatziargyriou, ND	en
dc.date.accessioned	2014-03-01T02:09:19Z
dc.date.available	2014-03-01T02:09:19Z
dc.date.issued	2012	en
dc.identifier.issn	09601481	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29813
dc.subject	De-loading	en
dc.subject	Inertial support	en
dc.subject	Load-frequency control	en
dc.subject	Wind generator	en
dc.subject.other	Control strategies	en
dc.subject.other	De-loading	en
dc.subject.other	Doubly fed induction generators	en
dc.subject.other	Load-frequency control	en
dc.subject.other	Overspeeding	en
dc.subject.other	Permanent magnet synchronous generator	en
dc.subject.other	Simulink	en
dc.subject.other	Variable speed-variable pitches	en
dc.subject.other	Varying load	en
dc.subject.other	Wind generator systems	en
dc.subject.other	Wind speed	en
dc.subject.other	Electric control equipment	en
dc.subject.other	Electric fault currents	en
dc.subject.other	Electric frequency control	en
dc.subject.other	Electric load management	en
dc.subject.other	Electric utilities	en
dc.subject.other	MATLAB	en
dc.subject.other	Synchronous generators	en
dc.subject.other	Wind power	en
dc.subject.other	Loading	en
dc.subject.other	control system	en
dc.subject.other	performance assessment	en
dc.subject.other	renewable resource	en
dc.subject.other	software	en
dc.subject.other	synchrony	en
dc.subject.other	topology	en
dc.subject.other	wind power	en
dc.subject.other	wind turbine	en
dc.subject.other	wind velocity	en
dc.title	Improved load-frequency control contribution of variable speed variable pitch wind generators	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/j.renene.2012.05.021	en
heal.identifier.secondary	http://dx.doi.org/10.1016/j.renene.2012.05.021	en
heal.publicationDate	2012	en
heal.abstract	In order for a wind generator (WG) to participate in load-frequency control (LFC) - either primary or secondary - some de-loading of its turbine is required. This paper discusses and rectifies important drawbacks of methods previously suggested on the two main de-loading techniques, i.e. over-speeding and pitch-controlled de-loading. In the same scope, the inertial support offered by WGs is also discussed. Two enhanced control strategies emerge from the above analysis: the first is based on over-speeding de-loading, which, for wind speed close to or above nominal, avoids overloading the converter of WGs equipped with Doubly Fed Induction Generator (DFIG); the second is a method of pitch-controlled de-loading combined with inertial support for fast LFC action. Simulations presented show both the positive performance of the two proposed strategies and their favorable results versus previous cited methodologies. In MATLAB® Simulink, a two-bus power system consisting of a varying load, a diesel-synchronous generator and WG topologies with either a DFIG or a Permanent Magnet Synchronous Generator (PMSG) are considered. © 2012 Elsevier Ltd.	en
heal.journalName	Renewable Energy	en
dc.identifier.doi	10.1016/j.renene.2012.05.021	en
dc.identifier.volume	48	en
dc.identifier.spage	514	en
dc.identifier.epage	523	en