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Vattennivåreglering i Avesta Lillfors: På uppdrag av Fortum Generation AB
KTH, School of Technology and Health (STH), Medical Engineering, Computer and Electronic Engineering.
2014 (Swedish)Independent thesis Basic level (university diploma), 10 credits / 15 HE creditsStudent thesisAlternative title
Water Level Control in Avesta Lillfors : On behalf of Fortum Generation AB (English)
Abstract [sv]

I denna rapport utreds olika metoder för att kunna reglera vattennivån i vattenkraftverket Avesta Lillfors i Dalarna. Två kraftverk ligger endast 900 m uppströms och detta gör att svarstiderna blir korta och regleringen blir lätt nervös. Att använda sig av vattennivåreglering i ett kraftverk för-enklar dess styrning då anpassning till inflödet sker automatiskt.

En flödestabell har tagits fram genom mätningar i turbinen, med hjälp av Winter-Kennedy-metoden. Denna tabell används för att kunna fram-koppla regulatorn och därmed dämpa stora variationer i inflödet. Dessu-tom har en modell av älven skapats och testats med en återkopplad PID-regulator. Utefter dessa tester har lämpliga parametrar tagits fram, som ger önskad stabilitet, noggrannhet och snabbhet. Simuleringar har även gjorts med reglermetoden Fuzzy logic.

Abstract [en]

This report evaluates different methods to create a stable regulation of the water level in the hydro power plant Avesta Lillfors, in county Dalar-na. Another pair of plants are located just 900 m up the stream, which is why the regulation has to act fast. If the water level can be regulated and automatically adjust to the incoming flow, it facilitates the control of the plant.

A flow chart is created from measurements in the turbine, using the Win-ter-Kennedy method. The results are used for feedforward control. A PID-regulator with feedback is also simulated in a model of the river. This helps finding the parameters that provide a stable, accurate and fast regu-lation. Fuzzy logic control has also been simulated.

Place, publisher, year, edition, pages
2014. , 67 p.
Series
TRITA-STH, 2014:39
Keyword [en]
flow measurement, water level regulation, pid control, feedforward control, fuzzy logic, hydro power, kaplan turbine
Keyword [sv]
flödesmätning, vattennivåreglering, pid-regulator, framkoppling, fuzzy logic, vattenkraft, kaplanturbin
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:kth:diva-146658OAI: oai:DiVA.org:kth-146658DiVA: diva2:724746
External cooperation
Fortum Generation AB
Subject / course
Automatic Control
Educational program
Bachelor of Science in Engineering - Electrical Engineering
Supervisors
Examiners
Available from: 2014-10-15 Created: 2014-06-12 Last updated: 2014-10-15Bibliographically approved

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