Smart charging of Electric vehicles for hosting capacity enhancement of Solar PVs in residential grids
Author
Lebiedzinski, Aleksander Tomasz
Term
4. term
Education
Publication year
2021
Pages
70
Abstract
This thesis examines how smart charging of electric vehicles can increase the hosting capacity of residential low-voltage grids for solar PV while maintaining power quality and minimizing charging costs. A residential LV distribution grid with household demand, PV generation, and home EV charging is modeled and simulated in MATLAB. Hosting capacity is assessed against grid constraints such as voltage levels and component loading, and the work addresses challenges including reverse power flow, overvoltages, and phase imbalance under high PV and EV penetration. The approach combines data analysis of load and PV profiles, EV home-charging availability, load-flow analysis, and charging optimization under different tariff schemes (Time-of-Day and net metering) to develop a balanced strategy that enhances PV self-consumption and system flexibility. The excerpt does not report quantitative findings, but the case studies evaluate impacts on EV owners’ costs and the grid’s hosting capacity.
Denne afhandling undersøger, hvordan smart opladning af elbiler kan bruges til at øge hostingkapaciteten for solcelle-PV i lavspændings-beboelsesnet, samtidig med at netkvaliteten opretholdes og opladningsomkostningerne minimeres. Et LV-distributionsnet med husholdningslast, PV-produktion og hjemmeladning modelleres og simuleres i MATLAB. Hostingkapacitet vurderes ud fra netbegrænsninger som spændingsniveauer og maksimal belastning af komponenter, og arbejdet adresserer udfordringer som omvendt effektflow, overspændinger og faseubalance ved høj PV- og EV-penetration. Metoden omfatter dataanalyse af last- og PV-profiler, EV-tilgængelighed til hjemmeladning, lastflowanalyse samt optimering af opladning under forskellige tariffer (Time-of-Day og net-metering) for at udvikle en balanceret opladningsstrategi, der øger PV-selvforbrug og fleksibilitet. Uddraget rapporterer ikke kvantitative resultater, men casestudierne vurderer indvirkningen på EV-ejeres omkostninger og nettes hostingkapacitet.
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