Results 101 to 110 of about 10,217 (226)

Analysis and Estimation Method for the Impact of Different Renewable Energy Ratios on Transient Overvoltage under DC Faults [PDF]

Dianli jianshe
[Objective] To address the ambiguous trends in transient overvoltage caused by unclear definitions of renewable energy ratios， this paper investigates how fluctuations in renewable generation and random unit commitment lead to varying impacts under ...
LIANG Chenguang, SHEN Xiaolin, YIN Chunya, LIU Wan, LI Xiaozhu, GAO Shang
doaj   +1 more source

Trisphere spark gap actuates overvoltage relay [PDF]

, 1966
Trisphere spark gap and high voltage relay provides a positive, fast response, high current capacity device that will sense an overvoltage condition and remove power from the circuit before insulation breakdown.
Camacho, S. L.
core  

Deep Learning Model for Magnetic Field Prediction of Transformers Under Overvoltage Conditions

IET Electric Power Applications
The transformer is an important equipment in power systems. However, prolonged abnormal conditions can lead to significant damage of the transformer equipment.
Qingjun Peng, Hantao Du, Zezhong Zheng, Haowei Zhu, Yuhang Fang   +4 more
doaj   +1 more source

Experimental Research of the Overvoltage in the Insulated Neutral Network

The isolated neutral network isolation resistance is often affected by the lightning discharge surge to the line cables or towers. Several overvoltage waves are maid at the moment of the lightning discharge surge.
Gvozdas, Vitalijus, Valatka, Povilas
core  

Study of Recovery Transient Overvoltage using ATP

, 2009
Peak overvoltage occurring during switching (energizing and de-energizing) is one of the most frequently encountered problems in power systems environment.
Anantha Rao, Anantha
core  

Evaluation of lightning‐induced overvoltage on a 10 kV distribution line based on electromagnetic return‐stroke model using finite‐difference time‐domain

High Voltage
Accurate simulation of lightning‐induced overvoltage for overhead distribution lines is helpful to prevent lightning trip accidents. An electromagnetic return‐stroke model was used to represent lightning and then a 3D finite‐difference time‐domain (FDTD)
Pan Duan, Lianfang Zhang, Xiaogang Huang, Jian Sun, Yue Qi, Qing Yang   +5 more
doaj   +1 more source

Fundamental Modeling of the Switching Transition in High-Speed Power Electronics

IEEE Access
Recent advances in semiconductor technology have paved the way for ultra-fast switching capabilities. This increase in switching speed enhances efficiency, power density, and frequency but also increases overvoltage oscillations at the switching node ...
Francois P. Du Toit, Ivan W. Hofsajer
doaj   +1 more source

Neutral zone closing overvoltage characteristics analysis in traction power supply system for group trains

电力工程技术
During the operation of group trains, the trains frequently pass through the neutral zone. Then, the generated closing overvoltage will cause serious insulation damage to the traction power supply system and the trains′ high-voltage equipment box.
XIANG Nianwen, XU Chenglin, SHAO Bingbing, YUAN Qiankun, YANG Jin, WANG Zhoulong   +5 more
doaj   +1 more source

Analysis of Overvoltage in Nonhomogeneous Distribution Cable Grids

, 2020
Коржов Антон Вениаминович, д-р техн. наук, доцент, профессор кафедры «Электрические станции, сети и системы электроснабжения», проректор по научной работе, Южно-Уральский государственный университет, г. Челябинск; korzhovav@susu.ru.
Коржов, А.В., Volkov, O.V., Коровин, Ю.В., Волков, О.В., Korovin, Yu.V., Korzhov, A.V.   +5 more
core   +1 more source

Design and develop current limiter for mosfet during overvoltage operation [PDF]

, 2012
Gate drive circuit is important for the purpose of controlling signal to the gate of power switch. Currently, most gate drive circuit is designed without current control; as such the overload, short circuit or overvoltage will cause permanent damage to ...
Nur Haezah, Mamat
core   +1 more source