With an ever growing demand for electricity, it is tough to know which challenges will be the most pressing and which solutions will be appropriate to implement in different cases. This thesis utilizes simulations of three low voltage grids to see which part of the grid is most vulnerable, to which extent grid reinforcement is needed to solve voltage and load problems, and what amount of demand flexibility services would be an adequate substitute to grid reinforcement. The three grids consists of a meshed grid in a suburban area, a radial grid in the city and a radial grid in the countryside. The grids are subjected to full penetration of electric vehicle chargers in a winter setting and full solar power penetration in a summer setting. The results indicate that the transformer is overloaded in both residential grids, although even more so in the meshed grid as opposed to radial grid wherein the cables are most overloaded. The countryside grid had some voltage problems in the summer, but were overall not affected notably. The conclusions were that the increase in electric vehicle chargers will be the most impending challenge and that grid reinforcement will be necessary in the long run but that demand flexibility services are a viable option in the meantime. The transformer would also need an upgrade in both residential grids.
| Identifer | oai:union.ndltd.org:UPSALLA1/oai:DiVA.org:uu-506773 |
| Date | January 2023 |
| Creators | Dellham, Oscar |
| Publisher | Uppsala universitet, Elektricitetslära |
| Source Sets | DiVA Archive at Upsalla University |
| Language | Swedish |
| Detected Language | English |
| Type | Student thesis, info:eu-repo/semantics/bachelorThesis, text |
| Format | application/pdf |
| Rights | info:eu-repo/semantics/openAccess |
| Relation | UPTEC E, 1654-7616 ; 23005 |
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