Exploration of the Impact of High Voltage Ground Fault in an Electric Vehicle Connected to Earthing Systems Worldwide

2017 ◽  
Author(s):  
Mohamed A. Elshaer ◽  
Allan Gale ◽  
Chingchi Chen
Keyword(s):  
Electric Vehicle ◽  
High Voltage ◽  
Ground Fault ◽  
Earthing Systems ◽  
The Impact

scholarly journals Deployment of a Bidirectional MW-Level Electric-Vehicle Extreme Fast Charging Station Enabled by High-Voltage SiC and Intelligent Control

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1840
Author(s):  
Ziwei Liang ◽  
Daniel Merced ◽  
Mojtaba Jalalpour ◽  
Hua Bai
Keyword(s):  
Electric Vehicle ◽  
Power Density ◽  
High Voltage ◽  
Battery Charging ◽  
Charging Station ◽  
Range Anxiety ◽  
System Input ◽  
Electric Vehicle Battery ◽  
Low Efficiency ◽  
The Impact

Considering the fact that electric vehicle battery charging based on the current charging station is time-consuming, the charging technology needs to improve in order to increase charging speed, which could reduce range anxiety and benefit the user experience of electric vehicle (EV). For this reason, a 1 MW battery charging station is presented in this paper to eliminate the drawbacks of utilizing the normal 480 VAC as the system input to supply the 1 MW power, such as the low power density caused by the large volume of the 60 Hz transformer and the low efficiency caused by the high current. The proposed system utilizes the grid input of single-phase 8 kVAC and is capable of charging two electric vehicles with 500 kW each, at the same time. Therefore, this paper details how high-voltage SiC power modules are the key enabler technology, as well as the selection of a resonant-type input-series, output-parallel circuitry candidate to secure high power density and efficiency, while intelligently dealing with the transient processes, e.g., pre-charging process and power balancing among modules, and considering the impact on the grid, are both of importance.

scholarly journals Safety assessment of high voltage substation earthing systems with synthetic geotextile membrane

2021 ◽  
Vol 10 (2) ◽  
pp. 85
Author(s):  
Mostafa Nazih
Keyword(s):  
High Voltage ◽  
System Performance ◽  
Software Package ◽  
Safety Assessment ◽  
State Of The Art ◽  
Voltage Distribution ◽  
Native Soil ◽  
Considerable Impact ◽  
Earthing Systems ◽  
The Impact

High voltage substations built within areas prone to vegetation or with unfavourable subgrade conditions are paved with the addition of punched geotextiles and non-conductive synthetic fabrics underneath switchyard surfacing. The aim of this research is to identify the impact of synthetic textiles on earthing system performance through numerical analysis with the state-of-the-art software package. The new layer interferes with the earthing grids performance with a different behaviour depending on the installation above or underneath the layer with considerable impact taking place when the earthing grid is installed above the geotextile layer. Rods penetrating the geotextile can alleviate the potential voltage distribution issues and improve the earthing system performance regardless of the native soil stratification.

Feature Extraction for the Ground Fault Factor of High Voltage System Interface

2018 ◽  
Vol 138 (3) ◽  
pp. 206-211
Author(s):  
Kazunori Nishimura ◽  
Yusaku Marui ◽  
Wataru Sunayama
Keyword(s):  
Feature Extraction ◽  
High Voltage ◽  
Ground Fault ◽  
High Voltage System

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 High voltage gain and conversion using bidirectional converter in microgrid and electric vehicle systems

2021 ◽  
Vol 1964 (5) ◽  
pp. 052016
Author(s):  
L. Annie Isabella ◽  
Y. Alexander Jeevanantham ◽  
Chandla Ellis ◽  
R. Kameshwaran
Keyword(s):  
Electric Vehicle ◽  
High Voltage ◽  
Voltage Gain ◽  
High Voltage Gain ◽  
Bidirectional Converter ◽  
Vehicle Systems

scholarly journals Assessment of the Visual Impact of Existing High-Voltage Lines in Urban Areas

Electricity ◽  
2021 ◽  
Vol 2 (3) ◽  
pp. 285-299
Author(s):  
Andreas Sumper ◽  
Oriol Boix-Aragones ◽  
Joan Rull-Duran ◽  
Joan Amat-Algaba ◽  
Joachim Wagner
Keyword(s):  
High Voltage ◽  
Urban Areas ◽  
Photographic Images ◽  
Sensibility Analysis ◽  
Visual Impact ◽  
The Impact

This article proposes a novel methodology to evaluate the visual impact of high-voltage lines in urban areas based on photographic images. The use of photographs allows for calculating the overall aesthetic impact while eliminating the subjective factors of the observer. To apply the proposed methodology based on photographs, the impact of the position and angle where the photograph was taken was analyzed, and a sensibility analysis was carried out. Moreover, it was applied to an application case, and a comparison with results from a previous study of a visual impact was performed. The methodology shows good performance and a better resolution of the indicator.

Determination of Dipole Spacing in Electrical Landfill Leakage Detection

2010 ◽  
Vol 171-172 ◽  
pp. 171-174
Author(s):  
Hong Cheng ◽  
Peng Kun Liu ◽  
Yu Ling Wang ◽  
Chang Xin Nai
Keyword(s):  
High Voltage ◽  
Direct Current ◽  
Current Method ◽  
Leakage Detection ◽  
High Voltage Direct Current ◽  
The Impact

The dipole spacing can directly affects the detecting sensitivity and accuracy in the landfill leakage detection by the high voltage direct current method. Based on the high voltage DC detecting model, the impact of dipole spacing on locating leaks is analyzed taking a single leak and multiple leaks as example. The results show that the greater the dipole spacing is, the higher the detecting sensitivity is; the smaller the dipole spacing is, the higher the detecting accuracy is. For multiple leaks, only one leak can be located when the dipole spacing is greater than the distance between the two leaks. In order to detect all leaks correctly, the dipole spacing should be smaller than the distance between the two leaks.

Sign in / Sign up

Export Citation Format

Share Document