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Reläskyddssystem för småskalig vattenkraft: En fallstudie för rekommenderad uppgradering av reläskyddssystem
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
2016 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

This thesis aims to propose a recommended upgrade for the generator protectionsystems in small hydropower stations. The hydropower stations examined areBrantafors, Djupafors, Horkoneryd, Kallinge ,Karlsnäs, Ronneby and Verperyd. Therecommended generator protection systems are developed from regulations basedon constitutions from Svenska Kraftnät and Elsäkerhetsverket. The recommendationpresented in this thesis is a lowest recommendation for the generator protectionsystems of small hydropower stations and in some cases the owner of the powerplant may request above this lowest level of protection.

The overall documentation of the stations has been inadequate and many parametersare unknown in the stations and therefore assumptions have been made. Theassumptions have a big influence on the short circuit calculations which affects therecommended settings for short circuit protection and therefore a conservativeapproach has been used.

The result of this thesis is that the hydro power station Ronneby can’t manage therequirements specified from Svenska Kraftnät, and therefore the protection system inthe hydro power station need to be adjusted. The hydropower stations Brantaforsand Verperyd can with minor adjustments meet the recommended generatorprotection. On the stations Djupafors, Horkoneryd, Kallinge and Karlsnäs largerupgrades of the generator protection systems need to be done to fulfill therecommended protection system.

Place, publisher, year, edition, pages
2016. , 70 p.
Series
UPTEC ES, ISSN 1650-8300 ; 16017
Keyword [sv]
reläskydd, småskalig vattenkraft, skyddssystem, skydd
National Category
Energy Systems Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-296607OAI: oai:DiVA.org:uu-296607DiVA: diva2:939019
External cooperation
Sweco Energuide AB
Educational program
Master Programme in Energy Systems Engineering
Supervisors
Examiners
Available from: 2016-06-20 Created: 2016-06-17 Last updated: 2016-06-20Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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Output format
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