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Projektering av lokalnät med fördjupning i selektivitet
Halmstad University, School of Information Technology.
Halmstad University, School of Information Technology.
2019 (Swedish)Independent thesis Basic level (university diploma), 180 HE creditsStudent thesis
Abstract [en]

In power system, when a local network with over head lines is replaced by a network laid underground, itchanges the characteristics of the material used and gives an opportunity for an updated sizing. The goal withthe project was to present a proposal of a reconstruction of a old local network to a modern local network andpresent a selective coordination plan for all the branches in the new network. The methods that are used isthe Velanders method for interleaver of the maximum power, sizing according to “SvenskStandard”(Swedish Standards) and curve fit of trip curves to present digital produced selective coordinationplan. The new underground local network delivers a better electrical quality, that fulfills the triggerconditions and obtains a good selective coordination.

Abstract [sv]

Inom elkraftsystem, när ett luftburet lokalnät ersätts med ett markförlagt förändras förutsättningarna i formav materialets egenskaper och det ger möjlighet för uppdaterad dimensionering. Målet var att presentera ettförslag på ombyggnation av ett äldre luftburet till ett modernare markförlagt lokalnät och presenteraselektivplaner för samtliga grenar av det nya nätet. Metoder som använts är Velanders metod försammanlagring av maxeffekter, dimensionering enligt Svensk Standard och kurvanpassning avutlösningskurvor för att presentera digitalt framställda selektivplaner. Det markförlagda lokalnätet levereraren bättre elkvalitet, uppfyller utlösningsvillkoret och erhåller god selektivitet.

Place, publisher, year, edition, pages
2019.
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:hh:diva-39735OAI: oai:DiVA.org:hh-39735DiVA, id: diva2:1323909
Educational program
Electrical Engineer, 180 credits
Supervisors
Examiners
Available from: 2019-06-18 Created: 2019-06-12 Last updated: 2019-06-18Bibliographically approved

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fulltext(9416 kB)62 downloads
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Type fulltextMimetype application/pdf

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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