Results 71 to 80 of about 2,728,275 (121)

A novel embedded voltage‐clamped circuit for multilevel modular converters submodule to suppress very fast transient overvoltage

High Voltage
The submodule in multilevel modular converters experiences a very fast transient overvoltage (VFTO) during switch operation of gas‐insulated switchgear, which also results in overvoltage on power devices, such as thyristors and insulated gate bipolar ...
Hong Shen, Zhonghao Dongye, Mian Xiao, Jiayi Shao, Xiangyu Zhang, Yao Yao, Zifan Dong, Lei Qi   +7 more
doaj   +1 more source

TabPFN-enabled multimodal diagnostic framework with interphase interference compensation for metal oxide surge arresters

Results in Engineering
Reliable fault diagnosis of metal oxide surge arresters (MOSAs) requires accurate interpretation of leakage currents under interphase capacitive interference and limited fault data.
Lipeng Zhong, Zhijie Tang, Yufang Liu, Jian Gao, Jinyu Li, Ying Yan, Ping Li, Feng Wang, Guanghai Fei   +8 more
doaj   +1 more source

New criteria for metal oxide surge arrester condition monitoring based on leakage current analysis: Considering non‐uniform pollution effect

IET Generation, Transmission & Distribution
The role of surge arresters is vital in power systems' protection against transient overvoltages, which can arise due to occurrences like lightning strikes or switching operations.
Masume Khodsuz, Mohammad Hossein Teymourian, Seyyedmeysam Seyyedbarzegar   +2 more
doaj   +1 more source

Mathematical Modeling of Passive Techniques Designed for PT Ferroresonance Suppression

International Journal of Electrical Power & Energy Systems
Ferroresonance often inflicts severe damage on electrical equipment like potential transformers (PTs), surge arresters, and circuit breakers. In this paper, a new passive (P) technique using Cex (external parallel capacitor) is proposed and its ...
H. Tahami fard, S. Seyedtabaii
doaj   +1 more source

Porous anodic metal oxides [PDF]

, 2008
An equifield strength model has been established to elucidate the formation mechanism for the highly ordered alumina pore arrays and titanium oxide nanotubular arrays prepared via a common electrochemical methodology, anodisation. The fundamentals of the
Su, Zixue, Zhou, Wuzong, Zixue Su, Wuzong Zhou   +3 more
core   +1 more source

Research on Field Source Characteristics of Leakage Current of Arrester Based on TMR Sensor. [PDF]

Sensors (Basel), 2023
Fu Y, Li T, Li Y, Hu X, Jiang X, Dong Y, Zhao P, Yu C, Wang J.   +8 more
europepmc   +1 more source

Investigation and Control of Unstable Chaotic Behavior Using of Chaos Theory in Two Electrical Power Systems: 1-Buck Converter2- Power Transformer

Iranian Journal of Electrical and Electronic Engineering, 2011
This paper consist of two sections: control and stabilizing approach for chaotic behaviour of converter is introduced in first section of this paper for the removal of harmonic caused by the chaotic behaviour in current converter.
H. Abbasi, A. Gholami, A. Abbasi,
doaj  

Optimization of zinc oxide surge arrester design in reducing leakage current / Nurul Ain Abdul Latiff [PDF]

, 2018
A surge arrester diverts lightning surge to earth, preventing damage on electrical systems. Under normal operating condition, surge arresters do not conduct current but there is a leakage current flow across surge arresters. Leakage current is one of the
Nurul Ain, Abdul Latiff
core   +2 more sources

Configuring the metal-oxide surge arresters

, 2019
U ovom završnom radu pod naslovom Izbor metal oksidnih odvodnika prenapona, detaljno je opisana opasnost koja nastaje pojavom prenapona i važnost zaštite elektroenergetskog sustava s odvodnicima prenapona.
Stjepanović, Dean
core  

Impacts of New Suggested Ferroresonance Limiter on the Stability Domain of Ferroresonance Modes in Power Transformers Considering Metal Oxide Surge Arrester Effect

Iranian Journal of Electrical and Electronic Engineering, 2011
this work studies the effect of neutral earth resistance on the controlling ferroresonance oscillation in the power transformer including MOV surge arrester.
H. Radmanesh, M. Rostami
doaj