Results 41 to 50 of about 869 (176)

Analysis of transient overvoltages in EV charging stations due to direct lightning strikes

open access: yesIET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
This research investigates the impact of lightning on electric vehicle charging stations (EVCSs), focusing on the critical role of grounding systems. By simulating various lightning strike scenarios, we examine the influence of factors such as grounding configuration, cable shielding, and lightning current characteristics on the induced overvoltages ...
Ahmad Moradi, Asghar Akbari Foroud
wiley   +1 more source

Performance Evaluation of Surge Arrester Counters in Energy Transmission Lines During Switching: Simulation and Practical Results

open access: yesIET Generation, Transmission &Distribution, Volume 19, Issue 1, January/December 2025.
This study evaluates surge arrester performance in mitigating transient overvoltages during 400 kV transmission line switching in Iran, using EMTP‐RV software and statistical switching. Simulation results show that modelling corona effects reduces the surge arrester counter operation considerably, aligning with practical observations.
Javad Modarresi   +2 more
wiley   +1 more source

Selection and coordination of surge arresters for switching transient mitigation in photovoltaic power plants [PDF]

open access: yes, 2017
: Photovoltaic energy generation has become a popular renewable alternative to conventional energy generation that utilise fossil fuels. However, given the diversity and complexity of these PV plants, it is imperative that such plant equipment be ...
Bokoro, P.   +3 more
core  

Feasibility study of a simulation software tool development for dynamic modelling and transient control of adiabatic compressed air energy storage with its electrical power system applications [PDF]

open access: yes, 2018
The field of large-scale electrical energy storage is growing rapidly in both academia and industry, which has driven a fast increase in the research and development on adiabatic compressed air energy storage.
Dooner, Mark   +6 more
core   +1 more source

Simulink model of transformer differential protection using phase angle difference based algorithm [PDF]

open access: yes, 2020
An application of phase-angle-difference based algorithm with percentage differential relays is presented in this paper. In the situation where the transformer differential relay is under magnetizing inrush current, the algorithm will be utilized to ...
Iqteit, Nassim A., Yahya, Khalid
core   +3 more sources

Precise Evaluation of Repetitive Transient Overvoltages in Motor Windings in Wide-Bandgap Drive Systems

open access: yesVehicles, 2022
The increasing interest in employing wide-bandgap (WBG) drive systems has brought about very high power, high-frequency inverters enjoying switching frequencies up to hundreds of kilohertz.
Ashkan Barzkar, Mona Ghassemi
doaj   +1 more source

Fault Characteristic and Low Voltage Ride-Through Requirements Applicability Analysis for a Permanent Magnet Synchronous Generator-Based Wind Farm

open access: yesEnergies, 2019
As the penetration of wind energy is being dramatically increased, the impact of wind energy on the power system should be roundly studied, especially for the fault characteristics analysis and applicability analysis of low voltage ride-through (LVRT ...
Wei Chen, Taiying Zheng, Junfei Han
doaj   +1 more source

Investigating Ferroresonance Susceptibility in Various Transformer Configurations: A Simulation‐Based Study

open access: yesInternational Transactions on Electrical Energy Systems, Volume 2025, Issue 1, 2025.
Ferroresonance poses a major threat to the quality and reliability of power distribution systems due to its inherent characteristics of sustained overvoltages and currents. This paper aims to enhance the understanding and reduce the ferroresonance threat by investigating the susceptibility of different transformer configurations using MATLAB/Simulink ...
George Eduful   +3 more
wiley   +1 more source

基于有限元的输电线路避雷器放电能量研究

open access: yesDianci bileiqi, 2020
为了减少由于超压放电时所产生的高能量引起避雷器特性的劣化率,通过有限元分析法建立一组不同尺寸和额定值的输电线路避雷器模型,并研究其在快波前浪涌事件中释放能量的能力。结果表明,有限元法模拟结果与PSCAD/EMTDC、EMTP-RV软件的模拟结果基本一致;采用模型计算得出的放电电压和能量承受能力与PSCAD/EMTDC、EMTP-RV软件的模拟结果及制造商提供的测试数据基本吻合,证明所建立的模型适于所研究的工况;另外,通过所建立模型,进行了参数分析,发现Zn ...
彭凯   +5 more
doaj  

Development of High Gradient ZnO Arrester Material for High Voltage Applications

open access: yesIEEE Access, 2020
The presence of stray capacitance in ZnO (Zinc Oxide) surge arresters causes hurdles in arrester operation and non-uniform voltage distribution along the arrester column, especially for High Voltage (HV) and Extra high voltage (EHV) applications.
Kannadasan Raju   +4 more
doaj   +1 more source

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