Impact of Uncontrolled Charging with Mass Deployment of Electric Vehicles on Low Voltage Distribution Networks

Yu, Yunhe; Shekhar, Aditya; Mouli, Gautham Chandra Ram; Bauer, Pavol; Refa, Nazir; Bernards, Raoul

doi:10.1109/itec48692.2020.9161574

Cited by 12 publications

(8 citation statements)

References 12 publications

(9 reference statements)

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“…The EV penetration increases from 0% (EV 0) to 80% (EV 80). The method of EV fleet and charging profile generation is based on and updated from [12]. The difference in this research is that, the EV types are selected from the top selling EVs in the German market [13].…”

Section: B Simulation Resultsmentioning

confidence: 99%

Aggregated Impact of EV Charger Type and EV Penetration level in Improving PV Integration in Distribution Grids

Wagh

Shekhar

et al. 2021

2021 IEEE Transportation Electrification Conference &Amp; Expo (ITEC)

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Mass deployment of Electric Vehicles (EVs) can improve the loading characteristics of low voltage distribution grids with high Photovoltaic (PV) penetration. This impact is investigated in the paper from two point of views, namely, the EV charger type and the EV penetration level. Based on the measured usage data for home, public and semi-public EV chargers, it is highlighted that the ratio of the number of these charger types can influence the grid level impact of PV penetration. Using Monte-Carlo method with aggregated power balance model, it is suggested that the increase in percentage of public and semi-public chargers relative to home chargers can improve self-consumption of PV energy in the grid, thereby reducing the power mismatch due to excess local generation. A PowerFactory based simulation with real measurement based data on real German distribution grids reveals that the grids have no risk of congestion at all with 80% EV penetration , allowing for a possibility even higher EV penetration in the future. Furthermore, with the considered uncontrolled EV charging, it is observed that the grids experience reverse power flows due to excess PV generation. This excess PV energy reduces by about 5 % with high EV penetration, indicating a future potential for targeted smart charging application for improving these benchmarked results.

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Section: B Simulation Resultsmentioning

confidence: 99%

Aggregated Impact of EV Charger Type and EV Penetration level in Improving PV Integration in Distribution Grids

Wagh

Shekhar

et al. 2021

2021 IEEE Transportation Electrification Conference &Amp; Expo (ITEC)

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“…Regarding the last point, smart charging devices for EVs are constantly being developed by research groups worldwide, with approaches such as charging profiles [40], wireless charging [41], increasing the process efficiency [42], or decreasing the charging time [43], for instance, in the attempt to reduce the effects on the grid. The requirements for electrical mobility exceed the vehicles and their charging stations: urban planning must be considered and electric systems reinforced, as the demand will increase to meet the power requirements [44,45].…”

Section: Electric Mobilitymentioning

confidence: 99%

Assessing the Role of Energy Storage in Multiple Energy Carriers toward Providing Ancillary Services: A Review

2022

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Renewable energy power plants and transport and heating electrification projects are being deployed to enable the replacement of fossil fuels as the primary energy source. This transition encourages distributed generation but makes the grid more weather-dependent, thus reducing its inertia. Simultaneously, electrical network operators face voltage, frequency, and stability challenges at the distribution level. Networks were not designed to manage the stochasticity of renewable energy sources or the congestion caused by the new transport and heating demands. Such challenges are commonly addressed through infrastructure reinforcements. This review studies how energy storage systems with different carriers can provide a collaborative solution involving prosumers as ancillary services providers at the distribution level. We focused on the European urban context; thus, we analyzed renewable energy sources, batteries, supercapacitors, hydrogen fuel cells, thermal energy storage, and electric vehicles. A thorough review of successful implementations proved that including storage in one or more carriers benefits the distribution system operators and the prosumers, from both technical and economic perspectives. We propose a correlation between individual energy storage technologies and the ancillary services they can provide based on their responses to specific grid requirements. Therefore, distribution system operators can address network issues together with the prosumers. Nevertheless, attractive regulatory frameworks and business models are required to motivate prosumers to use their assets to support the grid. Further work is recommended to describe the joint operation of multiple storage technologies as multicarrier systems, focusing on the coupling of electrical and thermal energy storage. Additionally, how ancillary services affect the energy storage system’s aging should be studied.

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“…In addition, the charging sessions are categorised into three types namely home, semi-public and public, based on their features like location of charging, time of arrival and duration of parking, as described in a previous study [36]. The charging sessions are then translated into different types of chargers to integrate into the grid simulation.…”

Section: Ev Penetration Representationmentioning

confidence: 99%

Data-Driven Study of Low Voltage Distribution Grid Behaviour With Increasing Electric Vehicle Penetration

Reihs

Wagh

et al. 2022

IEEE Access

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In this paper, the impact of EV uncontrolled charging with four levels of EV penetration in overall 21 real low voltage distribution grids in two seasons are analyzed. The employed real grid data is provided by distribution system operators from three European countries: Austria, Germany and the Netherlands. At least six grids in each country were considered and they are categorised into three types, namely rural grids, suburban grids and urban grids. The EV charging data used in this study is based on real measurements or surveys. The seasonal and the weekday-weekend factors are also considered in the EV charging impact research. Three key congestion indicators, the transformer loading, line loading and node voltage as well as several other evaluation indexes are studied. The results reveal that the majority of the simulated grids had no or minor moments of mild overloading while a few rest grids have critical issues. Among all the grids, suburban grids are most vulnerable to massive EV integration. Out of the evaluated grids, those who are located in Germany have the highest redundancy for high EV penetration accommodation. Overall, the impact of uncontrolled EV charging depends on the combination of EV charging demand as well as the grid inherent features.

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Impact of Uncontrolled Charging with Mass Deployment of Electric Vehicles on Low Voltage Distribution Networks

Cited by 12 publications

References 12 publications

Aggregated Impact of EV Charger Type and EV Penetration level in Improving PV Integration in Distribution Grids

Aggregated Impact of EV Charger Type and EV Penetration level in Improving PV Integration in Distribution Grids

Assessing the Role of Energy Storage in Multiple Energy Carriers toward Providing Ancillary Services: A Review

Data-Driven Study of Low Voltage Distribution Grid Behaviour With Increasing Electric Vehicle Penetration

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