Title: Capability of synchronous machines to ride through events with high ROCOF
Authors: Assenkamp, Alf
Kreischer, Christian 
Kulig, Stefan
Language: en
Subject (DDC): DDC - Dewey Decimal Classification::600 Technik::620 Ingenieurwissenschaften
Issue Date: 1-Jan-2019
Publisher: Versita
Document Type: Article
Source: Enthalten in: Archives of electrical engineering. - Warsaw : Versita, 2010. - Online-Ressource . - Bd. 68.2019, 2, Seite 325-339
Journal / Series / Working Paper (HSU): Archives of Electrical Engineering 
Volume: 68.2019
Issue: 2
Page Start: 325
Page End: 339
Pages: 325-339
Publisher Place: Warsaw
© 2019. The Author(s). The transition of power grids to implement large amounts of nonsynchronous renewables reduces the inertia in the power system. Therefore, the rate of change of frequency (ROCOF) after a fault of given energy is higher in low inertia grids than in grids with mainly synchronous machines operating. Standard faults for the design of existing synchronous machines assume fixed frequency grids, in which an electrically close fault happens. It is not tested, if the machines can ride through transient disturbances with high ROCOF. For ROCOF values of up to 1 Hz/s as foreseen for the upcoming grid code of the Republic of Ireland and up to 2 Hz/s for Northern Ireland, a thorough verification, if generators are capable to ride through such events is necessary. For this study, ROCOF frequency traces provided by the transmission system operators (TSOs) of Ireland were first benchmarked with a full-grid model and in a second step impressed on a model of generators connected to the power grid via a step-up transformer to study transient stability and nonlinear response of the generator. This paper focusses on the ability of nine different synchronous machines to stay connected to the transmission system during severe ROCOF events without losing synchronism.
Organization Units (connected with the publication): Elektrische Maschinen und Antriebssysteme 
URL: https://api.elsevier.com/content/abstract/scopus_id/85066266880
ISSN: 14274221
DOI: 10.24425/aee.2019.128271
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