scholarly journals Optimized Integration of Electric Vehicles in Low Voltage Distribution Grids

Energies ◽  
2019 ◽  
Vol 12 (21) ◽  
pp. 4059 ◽  
Author(s):  
Martin Spitzer ◽  
Jonas Schlund ◽  
Elpiniki Apostolaki-Iosifidou ◽  
Marco Pruckner
Keyword(s):  
Electric Vehicles ◽  
Low Voltage ◽  
Combustion Engine ◽  
Ghg Emissions ◽  
Phase System ◽  
Coordination Strategies ◽  
Transportation Sector ◽  
Coordinated Charging ◽  
The Impact ◽  
Distribution Grids

All over the world the reduction of greenhouse gas (GHG) emissions, especially in the transportation sector, becomes more and more important. Electric vehicles will be one of the key factors to mitigate GHG emissions due to their higher efficiency in contrast to internal combustion engine vehicles. On the other hand, uncoordinated charging will put more strain on electrical distribution grids and possible congestions in the grid become more likely. In this paper, we analyze the impact of uncoordinated charging, as well as optimization-based coordination strategies on the voltage stability and phase unbalances of a representative European semi-urban low voltage grid. Therefore, we model the low voltage grid as a three-phase system and take realistic arrival and departure times of the electric vehicle fleet into account. Subsequently, we compare different coordinated charging strategies with regard to their optimization objectives, e.g., cost reduction or GHG emissions reduction. Results show that possible congestion problems can be solved by coordinated charging. Additionally, depending on the objective, the costs can be reduced by more than 50% and the GHG emissions by around 40%.

scholarly journals A Coordinated Charging Scheduling of Electric Vehicles Considering Optimal Charging Time for Network Power Loss Minimization

Energies ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 5336
Author(s):  
Muhammad Usman ◽  
Wajahat Ullah Khan Tareen ◽  
Adil Amin ◽  
Haider Ali ◽  
Inam Bari ◽  
...  
Keyword(s):  
Electric Vehicles ◽  
Distribution System ◽  
Low Voltage ◽  
Combustion Engine ◽  
Cost Effective ◽  
Voltage Profile ◽  
Power Losses ◽  
Network Losses ◽  
Coordinated Charging ◽  
Network Power

Electric vehicles’ (EVs) technology is currently emerging as an alternative of traditional Internal Combustion Engine (ICE) vehicles. EVs have been treated as an efficient way for decreasing the production of harmful greenhouse gasses and saving the depleting natural oil reserve. The modern power system tends to be more sustainable with the support of electric vehicles (EVs). However, there have been serious concerns about the network’s safe and reliable operation due to the increasing penetration of EVs into the electric grid. Random or uncoordinated charging activities cause performance degradations and overloading of the network asset. This paper proposes an Optimal Charging Starting Time (OCST)-based coordinated charging algorithm for unplanned EVs’ arrival in a low voltage residential distribution network to minimize the network power losses. A time-of-use (ToU) tariff scheme is used to make the charging course more cost effective. The concept of OCST takes the departure time of EVs into account and schedules the overnight charging event in such a way that minimum network losses are obtained, and EV customers take more advantages of cost-effective tariff zones of ToU scheme. An optimal solution is obtained by employing Binary Evolutionary Programming (BEP). The proposed algorithm is tested on IEEE-31 bus distribution system connected to numerous low voltage residential feeders populated with different EVs’ penetration levels. The results obtained from the coordinated EV charging without OCST are compared with those employing the concept of OCST. The results verify that incorporation of OCST can significantly reduce network power losses, improve system voltage profile and can give more benefits to the EV customers by accommodating them into low-tariff zones.

Big oil in 2030: thriving (and driving) in a carbon constrained future

2018 ◽  
Vol 58 (2) ◽  
pp. 525
Author(s):  
Bernadette Cullinane ◽  
Steve McGill
Keyword(s):  
Electric Vehicles ◽  
Automotive Industry ◽  
Combustion Engine ◽  
Petroleum Products ◽  
New Normal ◽  
Transportation Fuels ◽  
Transportation Sector ◽  
Petroleum Companies ◽  
The Uk ◽  
The Impact

What if you knew that, 12 years from now, demand for your product would dramatically fall? What would you do? The transportation sector is responsible for more than 60% of worldwide demand for petroleum products. However, several countries have recently introduced policies banning the internal combustion engine (ICE) and/or supporting electric vehicles (EVs), which could have a major impact on this demand. Norway, India, The Netherlands, Germany, China and the UK have all made such announcements. Furthermore, the increasing affordability and reliability of EVs combined with their excellent maintenance and automation capabilities have driven EVs to become among the best-selling luxury cars available today. There is no way to be certain what the new normal of 2030 may bring for petroleum transportation fuels and the automotive industry. Forecasts range from a world dominated by EVs and substantially reduced demand for oil, to scenarios where the impact to petroleum demand is less than 10%. Whatever the future may bring, renewable energy paired with flexible and intelligent EVs is emerging as a threat, to which the petroleum and automotive industries are responding with a myriad of strategies. Throughout history, even small disruptions in supply or demand have resulted in major impacts on industry profitability. Based on case studies from around the world and work with large petroleum companies in Australia, this paper discusses how leading companies are preparing for a post-ICE world and considers what steps petroleum and automotive industry executives should be taking today to ensure that they remain vibrant and viable in the new normal of 2030 and beyond.

scholarly journals Optimized Strategic Planning of Future Norwegian Low-Voltage Networks with a Genetic Algorithm Applying Empirical Electric Vehicle Charging Data

Electricity ◽  
2021 ◽  
Vol 2 (1) ◽  
pp. 91-109
Author(s):  
Julian Wruk ◽  
Kevin Cibis ◽  
Matthias Resch ◽  
Hanne Sæle ◽  
Markus Zdrallek
Keyword(s):  
Genetic Algorithm ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Low Voltage ◽  
Network Planning ◽  
Voltage Regulation ◽  
Electric Vehicle Charging ◽  
Vehicle Charging ◽  
The Impact

This article outlines methods to facilitate the assessment of the impact of electric vehicle charging on distribution networks at planning stage and applies them to a case study. As network planning is becoming a more complex task, an approach to automated network planning that yields the optimal reinforcement strategy is outlined. Different reinforcement measures are weighted against each other in terms of technical feasibility and costs by applying a genetic algorithm. Traditional reinforcements as well as novel solutions including voltage regulation are considered. To account for electric vehicle charging, a method to determine the uptake in equivalent load is presented. For this, measured data of households and statistical data of electric vehicles are combined in a stochastic analysis to determine the simultaneity factors of household load including electric vehicle charging. The developed methods are applied to an exemplary case study with Norwegian low-voltage networks. Different penetration rates of electric vehicles on a development path until 2040 are considered.

scholarly journals The Development of Strategies to Reduce Exhaust Emissions from Passenger Cars in Rzeszow City—Poland. A Preliminary Assessment of the Results Produced by the Increase of E-Fleet

Energies ◽  
2021 ◽  
Vol 14 (4) ◽  
pp. 1046
Author(s):  
Maksymilian Mądziel ◽  
Tiziana Campisi ◽  
Artur Jaworski ◽  
Giovanni Tesoriere
Keyword(s):  
Particulate Matter ◽  
Electric Vehicles ◽  
Combustion Engine ◽  
Present Report ◽  
Exhaust Emissions ◽  
Motor Vehicles ◽  
Strategic Choices ◽  
Passenger Cars ◽  
Particulate Concentration ◽  
The Impact

Urban agglomerations close to road infrastructure are particularly exposed to harmful exhaust emissions from motor vehicles and this problem is exacerbated at road intersections. Roundabouts are one of the most popular intersection designs in recent years, making traffic flow smoother and safer, but especially at peak times they are subject to numerous stop-and-go operations by vehicles, which increase the dispersion of emissions with high particulate matter rates. The study focused on a specific area of the city of Rzeszow in Poland. This country is characterized by the current composition of vehicle fleets connected to combustion engine vehicles. The measurement of the concentration of particulate matter (PM2.5 and PM10) by means of a preliminary survey campaign in the vicinity of the intersection made it possible to assess the impact of vehicle traffic on the dispersion of pollutants in the air. The present report presents some strategies to be implemented in the examined area considering a comparison of current and project scenarios characterized both by a modification of the road geometry (through the introduction of a turbo roundabout) and the composition of the vehicular flow with the forthcoming diffusion of electric vehicles. The study presents an exemplified methodology for comparing scenarios aimed at optimizing strategic choices for the local administration and also shows the benefits of an increased electric fleet. By processing the data with specific tools and comparing the scenarios, it was found that a conversion of 25% of the motor vehicles to electric vehicles in the current fleet has reduced the concentration of PM10 by about 30% along the ring road, has led to a significant reduction in the length of particulate concentration of the motorway, and it has also led to a significant reduction in the length of the particulate concentration for the access roads to the intersection.

scholarly journals Implementation and Experimental Verification of Smart Junction Box for Low-Voltage Automotive Electronics in Electric Vehicles

2020 ◽  
Vol 10 (7) ◽  
pp. 2214
Author(s):  
Sang Wook Lee ◽  
Soo-Whang Baek
Keyword(s):  
Electric Vehicles ◽  
Printed Circuit Board ◽  
Pulse Width Modulation ◽  
Low Voltage ◽  
Short Circuit ◽  
Circuit Board ◽  
Area Network ◽  
Automotive Electronics ◽  
Overload Protection ◽  
The Impact

In this study, we designed and implemented a smart junction box (SJB) that was optimized for supplying power to low-voltage headlights (13.5 V) in electric vehicles. The design incorporated a number of automotive semiconductor devices, and components were placed in a high-density arrangement to reduce the overall size of the final design. The heat generated by the SJB was efficiently managed to mount an Intelligent Power Switch (IPS), which was used to power the headlights onto the printed circuit board (PCB) to minimize the impact on other components. The SJB was designed to provide power to the headlights via pulse width modulation to extend their lifetime. In addition, overload protection and fail/safe functions were implemented in the software to improve the stability of the system, and a controller area network (CAN) bus was provided for communications with various components in the SJB as well as with external controllers. The performance of the SJB was validated via a load operation test to assess the short circuit and overload protection functions, and the output duty cycle was evaluated across a range of input voltages to ensure proper operation. Based on our results, the power supplied to the headlights was found to be uniform and stable.

scholarly journals Impact of Solar Panel Orientation on the Integration of Solar Energy in Low-Voltage Distribution Grids

2020 ◽  
Vol 2020 ◽  
pp. 1-13 ◽  
Author(s):  
Joannes I. Laveyne ◽  
Dimitar Bozalakov ◽  
Greet Van Eetvelde ◽  
Lieven Vandevelde
Keyword(s):  
Low Voltage ◽  
Real Life ◽  
Solar Panel ◽  
Solar Panels ◽  
Voltage Distribution ◽  
Distribution Grid ◽  
Voltage Balance ◽  
Residential Distribution ◽  
The Impact ◽  
Distribution Grids

In Belgium, and many other countries, rooftop solar panels are becoming a ubiquitous form of decentralised energy production. The increasing share of these distributed installations however imposes many challenges on the operators of the low-voltage distribution grid. They must keep the voltage levels and voltage balance on their grids in check and are often regulatory required to provide sufficient reception capacity for new power producing installations. By placing solar panels in different inclinations and azimuth angles, power production profiles can possibly be shifted to align more with residential power consumption profiles. In this article, it is investigated if the orientation of solar panels can have a mitigating impact on the integration problems on residential low voltage distribution grids. An improved simulation model of a solar panel installation is constructed, which is used to simulate the impact on a residential distribution grid. To stay as close to real-life conditions as possible, real irradiation data and a model of an existing grid are used. Both the developed model as the results on grid impact are evaluated.

scholarly journals Conversion of internal combustion engine car to semi-autonomous electric car

2021 ◽  
Vol 2070 (1) ◽  
pp. 012203
Author(s):  
Jeffin Francis ◽  
Aby Biju Narayamparambil ◽  
Anupama Johnson ◽  
Jeswant Mathew ◽  
Vishnu Sankar ◽  
...  
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Internal Combustion Engine ◽  
Autonomous Vehicles ◽  
Combustion Engine ◽  
Ghg Emissions ◽  
Autonomous Driving ◽  
Internal Combustion ◽  
Electric Car ◽  
Transportation Sector

Abstract Climate change, Green House Gases (GHG) and global warming are well-known terms in the world today. Global research efforts are focused towards increasing efficiency and reducing GHG emissions from various emitters to deal with climate change. Since the transportation sector accounts for a large share of global GHG emissions it is justifiable that curbing global warming should transpire in this sector. Worldwide there are large number of research taking place in the electrification of transportation sector and autonomous vehicles. In the footsteps of this global trend towards electrification, autonomous driving and automation of the transportation sector, a research to convert an existing internal combustion engine car to an electric car and implementation of few features found in SAE level 1 autonomous vehicles are explored through this project. These features include controlling vehicles remotely, collision detection, parking assistance, etc.

scholarly journals Transformación de un vehículo de combustión a eléctrico

2021 ◽  
Author(s):  
Edgar Alonso Salazar Marín ◽  
Juan Felipe Arroyave Londoño
Keyword(s):  
Developing Countries ◽  
Environmental Impact ◽  
Greenhouse Gases ◽  
Electric Vehicles ◽  
Economic Benefit ◽  
Combustion Engine ◽  
Low Cost ◽  
Internal Combustion ◽  
Environment And Health ◽  
The Impact

Colombia, like other developing countries, has been incorporating various electric vehicles in its automotive park, motivated by an emerging policy of incentives, a concern for the environment and health, and a high cost of fuel; however, these types of vehicles remain relatively expensive. The transformation of thermal vehicles (combustion engine) to electric vehicles becomes an interesting option, due to its low cost compared to new commercial electric vehicles and the positive environmental impact which represents. The present work illustrates the technological steps that have been required in the transformation from a traditional internal combustion vehicle to an electric one (sprint vehicle), showing the economic benefit and the impact on the attenuation of greenhouse gases. The analysis of the traction dynamics and validation with various laboratory and field (road) tests, have shown the viability of a transformed vehicle, which satisfies the power demands under different load...

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