uu.seUppsala universitets publikationer
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf
Case Study of Photovoltaics and Electric Vehicle Charging in a Low-Voltage Distribution Grid
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Elektricitetslära.
2019 (Engelska)Självständigt arbete på avancerad nivå (yrkesexamen), 20 poäng / 30 hpStudentuppsats (Examensarbete)
Abstract [en]

This thesis investigates the effects from a grid connection of photovoltaics and electric vehicle charging in a low-voltage distribution grid. The study has taken place on behalf of Norrtälje Energi AB, and the object of study is a customer in one of their rural grids. Due to reported disturbances by the customer, a Magtech Voltage Booster (MVB) was installed at the point of common coupling. To evaluate the situation, three power quality measurements were analysed. Furthermore, a model of the distribution grid was developed in OpenDSS.

The main conclusion of this thesis is that the disturbances seems to be caused by temporary voltage drops (below 195.5 V) during charging hours. This situation continues to create problems even though the MVB boosts and balances the voltage. The power quality measurements showed that the voltage unbalance, during charging hours, violated the limit both before and after the MVB-installation. Another significant conclusion in this thesis is that the MVB does not seem to improve the power quality, on the contrary it deteriorates the power quality with regards to rapid voltage change and harmonic content. Furthermore, the OpenDSS-model was able to predict the temporary voltage drops. And the model also resulted in voltage unbalance comparable to the measurements. The model also displayed how the voltage unbalance and harmonic content mitigated to other parts of the grid, and it became clear that it is only the closest neighbour that is in the risk of deteriorated power quality.

Ort, förlag, år, upplaga, sidor
2019. , s. 59
Serie
UPTEC ES, ISSN 1650-8300 ; 19023
Nyckelord [en]
Power quality, photovoltaics, electric vehicle, distribution grid, OpenDSS
Nationell ämneskategori
Teknik och teknologier
Identifikatorer
URN: urn:nbn:se:uu:diva-395972OAI: oai:DiVA.org:uu-395972DiVA, id: diva2:1365985
Externt samarbete
Norrtälje Energi
Utbildningsprogram
Civilingenjörsprogrammet i energisystem
Handledare
Examinatorer
Tillgänglig från: 2019-11-08 Skapad: 2019-10-27 Senast uppdaterad: 2019-11-08Bibliografiskt granskad

Open Access i DiVA

fulltext(9735 kB)12 nedladdningar
Filinformation
Filnamn FULLTEXT01.pdfFilstorlek 9735 kBChecksumma SHA-512
944b2e0399e6ab53e01f245f2cfd4d841cbea94d8ba462c9b1fd923ee79bfb41ab710e5011775b1cd3c1ed96ed58fa609837020ea3eabe49e74c0bbc2f26a730
Typ fulltextMimetyp application/pdf

Av organisationen
Elektricitetslära
Teknik och teknologier

Sök vidare utanför DiVA

GoogleGoogle Scholar
Totalt: 12 nedladdningar
Antalet nedladdningar är summan av nedladdningar för alla fulltexter. Det kan inkludera t.ex tidigare versioner som nu inte längre är tillgängliga.

urn-nbn

Altmetricpoäng

urn-nbn
Totalt: 24 träffar
RefereraExporteraLänk till posten
Permanent länk

Direktlänk
Referera
Referensformat
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Annat format
Fler format
Språk
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Annat språk
Fler språk
Utmatningsformat
  • html
  • text
  • asciidoc
  • rtf