Comprehensive Assessment of Electric Vehicle Charging Impact on Distribution Networks: Integrating Diversity in Fleet and Electricity Tariffs
Year: 2025
Type: article
Abstract: With the ongoing trend of electrification in transportation, the charging demand from electric vehicles (EVs) is imposing an increasingly significant additional load on the existing power grid, especially on distribution networks. To reduce the short-term high peak demand of the distribution network, cost-effective electricity prices, such astime-of-use(TOU) tariffs, have been introduced to encourage EV customers to shift their load demand to off-peak periods. However, no existing studies have comprehensively analyzed the impacts of EV charging on distribution networks considering the effects of key parameters such as the proportion of customers onTOU tariffs, EV penetration levels, variousdaily charging frequenciesandcharging power levels. To address this gap, this paper proposes an innovative modelling approach that incorporates various proportions of these parameters. Critical analyses are presented for a real distribution network in South Australia with year-round smart meter data. The results indicate that this approach enhances the ability to assess the impact of EV charging on distribution networks by integrating the combined effects of key parameters. At80% EV penetration, the evening peak demand under 100%Flat tariffincreases by over 30%. If 25% of the customers charge EVs usingTOU tariffs, the maximum transformer utilization during the evening peak can be reduced by approximately 8.5%; however, this results in a new demand peak at the beginning of the TOUoff-peak period. For most load scenarios, theexisting TOU tariffsexacerbates network load fluctuations and increases maximum transformer utilization.
Source: IEEE Access
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $2,075
OpenAlex ID: W4411798928