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Assessment of subsynchronous oscillations in AC grid-connected VSC systems with type-4 wind turbines

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IET Renewable Power Generation.pdf (1,146Mb)
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10.1049/iet-rpg.2019.0291
 
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Sainz Sapera, LuisMés informacióMés informacióMés informació
Monjo Mur, LluísMés informacióMés informacióMés informació
Cheah Mañé, MarcMés informacióMés informacióMés informació
Liang, Jun
Document typeArticle
Defense date2019-12-09
Rights accessOpen Access
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
Converters are the key for increasing the development of renewable energy generation but their dynamic interaction with the grid has an important impact on stability. Oscillatory instabilities in different grid-connected converter systems at several frequency ranges are reported. In particular, sub and supersynchronous oscillatory instabilities in AC power systems with type-3 and type-4 wind turbine generators (WTGs) were recently registered at several wind farm areas. A number of works based on eigenvalue analysis and frequency domain approaches are carried out to analyse this new stability issue and more research is going on to analyse in detail the electric and control parameters that may affect this phenomenon. This study contributes analysing in detail the influence of system parameters on the subsynchronous oscillations (SSOs) in AC power systems with type-4 WTGs. This study is based on a new approach for subsynchronous stability assessment which could also be used for analysing other types of SSOs (e.g. subsynchronous control interactions between doubly-fed induction generators and series-compensated networks) as well as supersynchronous oscillations. A representative example of weak AC grids with type-4 WTGs is used to illustrate the contributions of the study. Results are validated with PSCAD/EMTDC time-domain simulations.
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© 2019 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
CitationSainz, L. [et al.]. Assessment of subsynchronous oscillations in AC grid-connected VSC systems with type-4 wind turbines. "IET renewable power generation", 9 Desembre 2019, vol. 13, núm. 16, p. 3088-3096. 
URIhttp://hdl.handle.net/2117/177330
DOI10.1049/iet-rpg.2019.0291
ISSN1752-1416
Publisher versionhttps://digital-library.theiet.org/content/journals/10.1049/iet-rpg.2019.0291
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  • QSE - Qualitat del Subministrament Elèctric - Articles de revista [78]
  • Departament d'Enginyeria Elèctrica - Articles de revista [789]
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