scholarly journals Challenges in Grid Integration of Electric Vehicles in Urban and Rural Areas

2021 ◽  
Vol 12 (4) ◽  
pp. 206
Author(s):  
Jakob Gemassmer ◽  
Carolin Daam ◽  
Ricardo Reibsch
Keyword(s):  
Electric Vehicles ◽  
Rural Areas ◽  
Low Voltage ◽  
High Load ◽  
Power Grids ◽  
Use Cases ◽  
Grid Integration ◽  
Battery Electric Vehicles ◽  
Urban And Rural Areas ◽  
Charging Strategy

The ramp-up of battery electric vehicles (BEVs) could lead to severe grid issues but also enables flexibility. This paper provides a better understanding of the challenges and potentials of integrating BEVs in power grids. Three charging strategies were modelled on four use cases and six low-voltage grids for urban and rural areas. Especially in rural areas, where many cars charge at home overnight, the charging strategy significantly affects grid issues. Purely market-oriented strategies can lead to high load peaks and thus to transformer and line overloading, while even a relatively simple, balanced charging strategy can significantly reduce grid issues.

scholarly journals A Novel Range-Extended Strategy for Fuel Cell/Battery Electric Vehicles

2015 ◽  
Vol 2015 ◽  
pp. 1-8 ◽  
Author(s):  
Jenn-Jiang Hwang ◽  
Jia-Sheng Hu ◽  
Chih-Hong Lin
Keyword(s):  
Fuel Cell ◽  
Electric Vehicle ◽  
Electric Vehicles ◽  
Diesel Generator ◽  
Control Approach ◽  
Battery Electric Vehicles ◽  
Switch Control ◽  
Driving Model ◽  
Range Anxiety ◽  
Charging Strategy

The range-extended electric vehicle is proposed to improve the range anxiety drivers have of electric vehicles. Conventionally, a gasoline/diesel generator increases the range of an electric vehicle. Due to the zero-CO2emission stipulations, utilizing fuel cells as generators raises concerns in society. This paper presents a novel charging strategy for fuel cell/battery electric vehicles. In comparison to the conventional switch control, a fuzzy control approach is employed to enhance the battery’s state of charge (SOC). This approach improves the quick loss problem of the system’s SOC and thus can achieve an extended driving range. Smooth steering experience and range extension are the main indexes for development of fuzzy rules, which are mainly based on the energy management in the urban driving model. Evaluation of the entire control system is performed by simulation, which demonstrates its effectiveness and feasibility.

Research and Analysis of Reliability of Power Grid SVG Master Circuit in Rural Areas

2015 ◽  
Vol 713-715 ◽  
pp. 1299-1301
Author(s):  
Hong Kai Li ◽  
Wei Li Wang ◽  
Jin Xing Wang ◽  
Shu Han Wang ◽  
Li Hong
Keyword(s):  
Rural Areas ◽  
Low Voltage ◽  
Power Grid ◽  
Reliability Estimation ◽  
Power Grids ◽  
Reactive Compensation ◽  
Line Loss ◽  
Made In China ◽  
Safety And Stability ◽  
Made In

Problems such as low voltage and big line loss have long existing in the power grid in rural areas of China. In recent years, some province and cities have improved voltage and reduced line loss by installing SVG at substations in rural power grids, and the effect is remarkable.With great compensation capacity and a good variety of modes of compensation, SVG is sure to replace old reactive compensation devices in rural power grid in future, which requires evaluation and analysis of SVG reliability so as to guarantee safety and stability of the power grid. However, now no research or analysis has been made in China on SVG reliability in rural power grids, which affects wide promotion of SVG in rural power grids.Under the background of Liaoning Power Grid 10kV/±5Mvar Chain SVG, this paper analyzes the reliability of k/n (G) system model of SVG master circuit structure, improving the accuracy of system reliability estimation. The estimation matches the operation outcome, thus providing data basis for the feasibility of SVG’s wide application in rural power grid in future.

Design of a Management Algorithm for Energy Trading in Microgrids

2020 ◽  
Vol 13 (7) ◽  
pp. 1028-1040
Author(s):  
Dimosthenis Verginadis ◽  
Athanasios Karlis
Keyword(s):  
Renewable Energy ◽  
Electric Vehicles ◽  
Low Voltage ◽  
Renewable Energy Sources ◽  
Distribution Networks ◽  
Power Grids ◽  
Energy Sources ◽  
Future Research ◽  
Energy Trading ◽  
Management Algorithm

Background: The scope of this paper is to study the energy trading in microgrids. Microgrids are low voltage or medium voltage distribution networks, which consist of energy storage systems, electric loads, e.g. electric vehicles and Renewable Energy Sources (RES). Methods: Legacy energy grids are being transformed by the introduction of small to medium sized individual or cooperative, mostly RES invested energy producers and prosumers. Electric vehicles penetrate the market and modern power grids integrate them as ancillary services providers when there are peak domestic loads, as well as in order to balance grid voltage aiming to increase system reliability, compensating for renewable energy sources’ intermittency and volatility in energy production. Results: An elaborate management algorithm is proposed in this paper, to balance demand and local renewable energy sources microgrid supply. Conclusion: Finally, the results of simulations of different scenarios, including economic parameters and proposals for future research are presented.

Applied Research of SVG to Control the Low Voltage in Rural Power Grids

2014 ◽  
Vol 602-605 ◽  
pp. 3021-3024
Author(s):  
Lin Kui Qu ◽  
Ji Xin Chen ◽  
Qiang Hou ◽  
Shu Han Wang ◽  
Si Cong Wu
Keyword(s):  
Rural Areas ◽  
Applied Research ◽  
Reactive Power ◽  
Low Voltage ◽  
Power Grids ◽  
Distribution Area ◽  
Voltage Distribution ◽  
Fast Speed ◽  
Power Load ◽  
Different Levels

Recently, with the increasing strength of attracting business and investments in Liaoning coastal area or big cities’ suburbs (counties), a large number of industrial and mining enterprises have shifted to rural areas. The rural areas’ power load is growing rapidly, but at the same time, many power sites such as 66kv substation, 10kv transmission line, and low-voltage distribution area have occurred different levels of “low voltage”, which affect the daily life and production of native residents. From 2011, Liaoning Electric Power Co., Ltd. has applied the third generation of dynamic reactive power compensation technology—SVG to control the “low voltage” of rural network, which has fast speed and strong compensation. And as a consequence, there is good social and economic benefit.

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