Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • 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
Load flow control and optimization using phase shifting equipment in combination with Banverkets rotating converters
KTH, School of Electrical Engineering (EES), Electric Power Systems.
2006 (English)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

The purpose of the thesis was to further investigate the possibility to complement the rotary converters with a phase shifting device as a continuation of the work done in the master thesis; Load flow control and optimization of Banverkets 132 kV 16 2/3 Hz high voltage grid. With this modification, rotating converters can be used almost as flexible as static converters.

The earlier thesis has come to the conclusion that the best way of compensating the phase displacement is with a series inductance. In this thesis the possibility to use capacitors instead of or in combination with inductors was investigated.

To investigate this three different models were built: One for the railway between H�ggvik (Stockholm) and Boden; the same model that was used in the earlier thesis; it was used to confirm the results, one for the railway between Boden and Haparanda and one model that was the same as for the Haparanda track but half the distance. The models were built in the simulation program SIMPOW.

The results from the simulations performed for the railway between Boden and H�ggvik confirmed the results from the earlier thesis, with a series inductance as phase shifter.

For the railway between Boden and Haparanda one phase shifting device consisting of reactors and one consisting of a combination of reactors and capacitors were dimensioned. The railway with half the length compared to the Haparanda track was used to see if the length of the track in a low impedance transmission system has a large influence of the size of the reactances needed. From the simulation the conclusion can be drawn that the track length does not have a large influence when suitable reactances are chosen. It is the size of the load and the phase angle that matter when choosing reactances.

For the Haparanda track it is possible to save power. With a phase shifter that consists of reactors that is placed in the converter station in Kalix, power savings of 340 MWh/year were achieved. With a combination of reactors and capacitors with the capacitors in the converter station in Boden and reactors in the converter station in Kalix power savings of 750 MWh/year were achieved.

Place, publisher, year, edition, pages
2006. , 71 p.
Series
EES Examensarbete / Master Thesis, XR-EE-EES-2006:02
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:kth:diva-118933OAI: oai:DiVA.org:kth-118933DiVA: diva2:609111
Educational program
Master of Science - Electric Power Engineering
Uppsok
Technology
Examiners
Available from: 2013-03-12 Created: 2013-03-04 Last updated: 2013-03-12Bibliographically approved

Open Access in DiVA

fulltext(1848 kB)333 downloads
File information
File name FULLTEXT01.pdfFile size 1848 kBChecksum SHA-512
340065c6674bf7d6a7bbd5ad2cfd37f4295d26360612bd807573de317576403d830637239612238a7555e37ee7287de61f01071b774b9a86b52050653b83e65a
Type fulltextMimetype application/pdf

By organisation
Electric Power Systems
Electrical Engineering, Electronic Engineering, Information Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 333 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: 126 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • 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