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Modellering av Forsmarks 10 kV nät system 637 i PowerFactory: Undersökning med avseende på belastning och selektivitet
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Electricity.
2019 (Swedish)Independent thesis Advanced level (professional degree), 20 credits / 30 HE creditsStudent thesisAlternative title
Modeling of Forsmark's 10 kV distribution network in PowerFactory (English)
Abstract [en]

This master thesis is done within the Energy Systems Engineering program at Uppsala

University and performed for Forsmarks Kraftgrupp, Vattenfall. The distribution grid

for the outer area of the nuclear power plant at Forsmark is an old grid from the time

during construction of the plant which later became permanent. Many changes have

been made to the grid thus far and Forsmark’s need for an updated model to easily

simulate upcoming changes to the system has increased.

In this thesis, the distribution grid for the outer area of Forsmark is modeled and

evaluated from the aspect of load and selectivity. The simulation software

PowerFactory has been used to model and perform the necessary network

calculations. The results from these calculations will serve as source material for a

future system health report for the distribution grid.

The results show that some components in the system are overloaded in some

modes of operation. A few buses have a fault clearing time that is too long and the

system is not selective. The problem with fault clearing time can be solved with new

settings on a protection relay and swapping changing out a few fuses. The selectivity in

the system would also be greatly improved by the new relay settings.

Place, publisher, year, edition, pages
2019. , p. 163
Series
UPTEC ES, ISSN 1650-8300 ; 19022
Keywords [sv]
Forsmark selektivplaner lastflödesberäkningar kortslutningsberäkningar
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
URN: urn:nbn:se:uu:diva-388510OAI: oai:DiVA.org:uu-388510DiVA, id: diva2:1333562
External cooperation
Forsmarks kraftgrupp AB
Educational program
Master Programme in Energy Systems Engineering
Supervisors
Examiners
Available from: 2019-07-01 Created: 2019-07-01 Last updated: 2019-07-01Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
  • ieee
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Output format
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