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Förstudie för kvalitetssäkringav glidande förband vid Hissmoforsvattenkraftsstation: -Specifikt för aggregat G6 och G7
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
2013 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesisAlternative title
Feasibility study for quality assurance on unit G6 andG7s sliding stator feet at Hissmofors hydro powerstation (English)
Abstract [en]

Jämtkraft AB which is a power production company in Sweden has bought two newhydro power units to their station in Hissmofors. The two new generators are using aconcept with sliding stator feet to handle the thermal expansion.

The concept with sliding stator feet on hydro electric generators has not beenworking satisfactory on many hydro power stations in Sweden and has caused a lot ofcosts due to long downtimes.The new station in Hissmofors is very important for Jämtkraft AB, and therefore theywant to know how to make sure that the sliding stator feet are working as theyshould. According to theories and a simplified model of the generator the stator feetdisplacement should be around 1 -1,6 mm.

The generators are delivered with a surveillance system that will measure thedisplacement of the sliding stator feet. The signal from the system isn’t accessible forJämtkraft AB but it will alarm when the sliding stator feet are malfunctioning.

To secure the function of the sliding feet a logger for the surveillance system or adifferent measurement system must be used; if both systems are used Jämtkraft cansecure the function of the surveillance system.

Place, publisher, year, edition, pages
2013. , 41 p.
UPTEC ES, ISSN 1650-8300 ; 13014
National Category
Mechanical Engineering
URN: urn:nbn:se:uu:diva-201866OAI: diva2:629626
External cooperation
Jämtkraft AB & Norconsult AB
Educational program
Master Programme in Energy Systems Engineering
Available from: 2013-07-05 Created: 2013-06-17 Last updated: 2013-07-05Bibliographically approved

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