Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Voltage Stability at Hydropower Stations Influenced by close-located Wind Farms
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
2012 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The number of integrated wind farms into the power system is increasing as well as the total installed wind power capacity, which may cause voltage stability concerns. Additionally, there are European Transmission System Operators (TSOs) that do notinvolve wind farms in contributing to the voltage control in any significant extent. In the on-going project by the European Network of Transmission System Operators for Electricity (ENTSO-E), to update the European grid requirements, this will probably be changed.

The aim of this Master thesis is to demonstrate the voltage variations in the high voltage grid during different operational conditions. Thereafter, clarify when high voltages may occur at the connection point of the studied wind farm. Furthermore, it is investigated whether the wind farm is able to regulate the voltage in the cases when high voltages occur. The load flow and switching studies are performed with the software tool Power System Simulator for Engineering (PSS/E) version 32.1.1. The grid model represents a part of the Swedish high voltage grid. Since voltage stability often is a local issue, special modelling aspects has been performed at the hydropower generators in the close-located area of the wind farm.

The main conclusions of this Master thesis are that high voltages is associated with low load situations, i.e., mostly during summer nights. Furthermore, the studied close-located reactor is not able to keep the voltage within desired level by itself. Finally, it has been shown that the wind farm is technically able to contribute to the voltage stability in the close-located area. But since wind power is an intermittent power source it makes the voltage regulating capacity less reliable compared to hydropower.

The results and conclusions given in this Master thesis have also been summarized in a conference paper for The 11th International Workshop on Large-Scale Integration of Wind Power into Power Systems as well as on Transmission Networks for Offshore Wind Power Plants, see Lidström et al [35].

Place, publisher, year, edition, pages
2012. , 69 p.
Series
UPTEC ES, ISSN 1650-8300 ; 12017
Keyword [en]
Voltage Stability, Hydropower, Wind farm, PSS/E, Load-flow calculations, Reactive Power
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-181017OAI: oai:DiVA.org:uu-181017DiVA: diva2:552684
External cooperation
Vattenfall Vattenkraft AB
Educational program
Master Programme in Energy Systems Engineering
Uppsok
Technology
Supervisors
Examiners
Available from: 2012-09-20 Created: 2012-09-14 Last updated: 2012-09-20Bibliographically approved

Open Access in DiVA

fulltext(1648 kB)925 downloads
File information
File name FULLTEXT01.pdfFile size 1648 kBChecksum SHA-512
656fae490acdd6a23804bf94514f6fb35257af4c8ad8d0e9c317ffb3f9ffe4711ec0494d7966fb6831ae9a589b94f8d7b12c98ec7a99f47f5abfe2fe0650270a
Type fulltextMimetype application/pdf

By organisation
Electricity
Engineering and Technology

Search outside of DiVA

GoogleGoogle Scholar
Total: 925 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 941 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf