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Future frequency control services in the Nordic power system
2017 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

An increased share of electricity production from variable energy sources, especially wind and solar power, and loss of inertia in the system, result in higher demands of frequency control. In the last decades, the quality of the grid frequency in the Nordic power system has gradually deteriorated.

This thesis has examined if an introduction of a new frequency control service, called fast FCR‑N, can improve the frequency quality. Today, almost all of the frequency control in the Nordic countries is provided by hydropower units.  Whether fast FCR-N can reduce wear and tear on the hydropower units was also studied. Numerical simulations of a one-area model representing primary frequency control and the Nordic electrical grid were carried out in Matlab Simulink. Two different designs of fast FCR-N, proportional and deadband design, were introduced in the system. The system performance regarding frequency quality and hydropower control work was evaluated.

The results show that both proportional and deadband fast FCR-N improve the system performance. Still, studies on a future scenario, assuming less inertia and frequency dependent load in the system, indicated that further actions need to be taken to get significantly better frequency quality in the future compared to today.

Place, publisher, year, edition, pages
2017.
Series
UPTEC ES, ISSN 1650-8300 ; 17 003
National Category
Energy Engineering Engineering and Technology
Identifiers
URN: urn:nbn:se:uu:diva-320126OAI: oai:DiVA.org:uu-320126DiVA: diva2:1088729
External cooperation
Vattenfall AB
Educational program
Master Programme in Energy Systems Engineering
Supervisors
Examiners
Available from: 2017-04-24 Created: 2017-04-14 Last updated: 2017-04-24Bibliographically approved

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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