Results 81 to 90 of about 24,842 (162)

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

Power operation region modeling and transient overvoltage suppression strategy of hybrid cascaded HVDC

International Journal of Electrical Power & Energy Systems
The hybrid cascaded HVDC system(HC-HVDC) in sending end system is composed of an Line Commutated Converter(LCC) connected in series with a parallel group of Modular Multilevel Converters (MMC).
Jiangshan Liu, Fengting Li, Chunya Yin, Ruikang Chen, Lu Han, Yingping Shi   +5 more
doaj   +1 more source

Analytical models of probability distribution and excess noise factor of Solid State Photomultiplier signals with crosstalk

, 2012
Silicon Photomultipliers (SiPM), also so-called Solid State Photomultipliers (SSPM), are based on Geiger mode avalanche breakdown limited by strong negative feedback.
Afek, Barrett, Buzhan, Consul, Eraerds, Futlik, Mirzoyan, Otte, Ramilli, S. Vinogradov, Vacheret, Vinogradov   +11 more
core   +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

Analytical Analysis of the Mechanism and Mitigation Methods of Transient Overvoltage in Direct-Drive Wind Turbine Generators Connected to Weak Power System

IEEE Access
In regions with extensive wind power collection, the grid’s robustness diminishes, and transient overvoltage phenomena during the restoration phase following an AC short-circuit fault pose significant challenges to secure and stable operation ...
Xu Tian, Shengtao Wu, Luran Wei, Lixin Zhang, Nan Wang, Quan Zheng   +5 more
doaj   +1 more source

Studies on Overvoltage: XI . Some Unusual Overvoltage Phenomena

Transactions of The Electrochemical Society, 1942
This is the first report on a series of researches in which an intensive study is to be made of factors related to overvoltage, so as to get a better insight into the mechanism of electrode potential and overvoltage. A list of questions concerning electrode potentials and overvoltage is given; also a list of possible stages in the process of ion ...
A. L. Ferguson, H. Bandes
openaire   +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

Time to Breakdown for Type I Motor Winding Insulation Under High‐Frequency High‐Slew‐Rate Square Wave Voltages

High Voltage, EarlyView.
ABSTRACT The emergence of (ultra)wide bandgap ((U)WBG)‐based devices has significantly enhanced performance in high‐frequency switching applications, enabling breakthroughs in electric transportation, aerospace, and renewable energy systems. However, it also presents considerable challenges to insulation systems, such as electric motor winding ...
Easir Arafat, Md Asifur Rahman, Farzana Islam, Mona Ghassemi   +3 more
wiley   +1 more source

Study of Power Frequency Overvoltage Suppression on UHV Transmission Line

Kongzhi Yu Xinxi Jishu, 2014
It mainly studied the improvement measures of overvoltage level for UHV transmission line from Jindongnan to Jingmen. It analyzed single-phase grounding load shedding overvoltage and fault-free load shedding overvoltage in the case of the single ...
HAN Mengmeng, WU Wenhui, HUANG Kan, WAN Liqin   +3 more
doaj  

Simulation on Operating Overvoltage of Dropping Pantograph Based on Pantograph–Catenary Arc and Variable Capacitance Model

Applied Sciences
When the electric locomotive pantograph is dropping, the interruption of pantograph catenary contact causes electromagnetic oscillation and arcing. The frequent arc burning that occurs due to charge accumulation results in the amplitude of overvoltage ...
Dazuo Jiang, Huanqing Zou, Yike Guo, Fuqiang Tian, Hongqi Liu, Yufeng Yin   +5 more
doaj   +1 more source