Results 41 to 50 of about 763 (183)

Correlated Transient Response of Buried Cables and Lightning Channel Radiation of Return Strokes of Five Rocket‐Triggered Lightning Strikes

High Voltage, EarlyView.
ABSTRACT Data from five rocket‐triggered lightning flashes are adopted to analyse the correlated transient response of buried cables and lightning channel radiations. These five flashes have the same termination point that is right above the buried cables and involve a total of 32 return strokes.
Mi Zhou, Xiaoyu Lei, Li Cai, Jianguo Wang, Weihan Zhao, Jinxin Cao, Denglei Duan, Maorong Geng, Yadong Fan, Jianping Wang   +9 more
wiley   +1 more source

Transient overvoltage suppression measures for new energy high penetration system at the sending end under bipolar blocking fault

电力工程技术
Aiming at the transient overvoltage problem in the new energy high-penetration area of the feeder due to DC bipolar blocking fault, a converter bus reactive power allocation capacity optimization scheme is proposed with the constraint that the transient ...
Xinyue LI, Chunya YIN, Lin LI, Sijue WANG, Ying CHEN   +4 more
doaj   +1 more source

Review of overhead line defect inspection based on deep learning and UAV images

电力工程技术
Line commutated converter based high voltage direct current (LCC-HVDC) is the key to large-scale grid connection and long-distance transmission of renewable energy. However, faults such as DC blocking and commutation failure may lead to short-term excess
ZHOU Wenqing, LIU Gang
doaj   +1 more source

Research on the impact of grid-connected offshore wind farms on transient overvoltage and characteristics of harmonic resonances

Zhejiang dianli, 2023
Grid-connected offshore wind farms are likely to cause harmonic resonances in the power system that jeopardize the safe operation of the power grid. To this end， the impact of grid-connected offshore wind farms on the transient overvoltage and harmonic ...
XU Qunwei, LUO Huafeng, MEI Bingxiao, LIU Haojun, ZHU Feibai, ZHU Hanshan, CHEN Xiangrong   +6 more
doaj   +1 more source

Breakdown and Discharge Characteristics of High Repetition Frequency Nanosecond Pulsed Air Dielectric Barrier Discharge

High Voltage, EarlyView.
ABSTRACT This study explores the breakdown characteristics and discharge modes in a parallel plate air dielectric barrier discharge system using repetitive nanosecond pulses, with pulse repetition frequencies (PRFs) from 0.1 to 100 kHz. It examines how pulse parameters—PRF, pulse number and gas pressure—affect the memory effect, leveraging current and ...
Mahreen, Dongxuan Xu, Denis Shaw, Peter Bruggeman   +3 more
wiley   +1 more source

Suppression of transient overvoltage in renewable energy transmission terminal by grid-forming based reactive power compensation

电力工程技术
Line commutated converter based high voltage direct current (LCC-HVDC) is the key to large-scale grid connection and long-distance transmission of renewable energy. However, faults such as DC blocking and commutation failure may lead to short-term excess
SHANG Lei, TANG Wangqianyun, SU Shi, ZHANG Gaomin, TANG Xiaoqian, HUA Zhuhu   +5 more
doaj   +1 more source

Arc Resistance Enhancement of Converter Transformer Tank Through Structural Improvements: Simulation and Experimental Validation

High Voltage, EarlyView.
ABSTRACT Currently, limited research exists on the structural response and protection methods of the converter transformer tank for ± 800 kV ultra‐high voltage direct current transmission project to high energy arc faults. This research investigates the dynamic response and the vulnerable areas of the ultra‐high voltage converter transformer under the ...
Ke Wang, Shuqi Zhang, Yikun Zhao, Yichen Wang, Zongliang Zhang, Jinhua Zhang   +5 more
wiley   +1 more source

Transient AC Overvoltage Suppression Orientated Reactive Power Control of the Wind Turbine in the LCC-HVDC Sending Grid

CES Transactions on Electrical Machines and Systems
High-voltage direct current (HVDC) transmission is a crucial way to solve the reverse distribution of clean energy and loads. The line commutated converter-based HVDC (LCC-HVDC) has become a vital structure for HVDC due to its high technological maturity
Bo Pang, Xiao Jin, Quanwang Zhang, Yi Tang, Kai Liao, Jianwei Yang, Zhengyou He   +6 more
doaj   +1 more source

Influence of Surface Area Calculation Methods on the Interpretation of Lithium‐Ion Diffusion Coefficient in Graphite Electrodes

ChemElectroChem, Volume 13, Issue 7, 1 April 2026.
Accurate determination of the lithium‐ion diffusion coefficient requires a consistent definition of active surface area. Applying galvanostatic intermittent titration technique and intermittent current interruption to a commercial graphite electrode, we quantify how three common approximations—geometrical area (AGA), scanning electron microscopy ...
Alessandro Gregucci, Antunes Staffolani, Francesca Soavi   +2 more
wiley   +1 more source

Research on Ultra-Fast Transient Overvoltage Characteristics of Electric Locomotive

Applied Sciences
Operating overvoltage occurs when the pantograph or main breaker of an electric locomotive is operated, which is prone to causing insulation failure of high-voltage equipment.
Yike Guo, Fuqiang Tian, Hongqi Liu, Yufeng Yin   +3 more
doaj   +1 more source