Results 71 to 80 of about 181 (134)

Analysis of varistor behaviour under DC overvoltages

, 2019
V tem diplomskem delu sem se posvetil časovnemu poteku električnega toka skozi energetski metaloksidni varistor (MOV) ob pojavu časnih prenapetosti, do katerih lahko pride v sistemu.
JAVORNIK, ŽAN
core  

Experimental study on behavior of MOV based surge arrestors under distorted supply voltages

, 2020
Surges due to lightning and various switching operations are a common phenomenon in electrical power systems. Due to surges, there can be transient overvoltages in the lines as high as many times the normal supply voltage.
Illangakoon IPS
core  

DC-SSCB Snubber for Electric Propulsion Ships With Effective Surge Voltage Reduction and Fast Dissipation of Fault Current Energy

IEEE Access
This paper proposes a snubber circuit for SSCB that performs voltage clamping operation in two stages to reduce surge voltage. The surge voltage is suppressed in the first stage using a MOV with low operating initiation and clamping voltages.
Jae-Hun Cha, Guangxu Zhou, Sung-Geun Song, Feel-Soon Kang   +3 more
doaj   +1 more source

Ferroresonance Suppression in Power Transformers using Chaos Theory [PDF]

, 2013
a b s t r a c t The main goal of this paper is the determination of the effect of the metal oxide varistor (MOV) on various ferroresonance modes including fundamental resonance, subharmonic and chaos mode which are generated in electrical power systems ...
Hamid Radmanesh, G B Gharehpetian
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国际上基于数值仿真计算金属氧化物避雷器的研究进展

Dianci bileiqi, 2018
系统综述了基于数值仿真计算技术在金属氧化物避雷器（metal-oxide surge arresters,MOA）研究中的应用发展。共分3个方面:1)基于等效电路模型的数值仿真计算;2)基于电、机械与热的两或多物理量（场）耦合的金属氧化物电阻片（metal-oxide surge varistor,MOV）数值仿真计算;3)整只MOA的电场、温度场或多物理场耦合的数值仿真计算。对于MOV的建模和仿真计算,将来主要的努力方向是改进数学计算模型,以便可以描述ZnO晶界与时间和温度相关的特性 ...
赵冬一, 李凡, 汤霖
doaj  

STUDY ON SURGE ARRESTER PERFORMANCE DUE TO LIGHTNING STROKE IN 20 KV DISTRIBUTION LINES

Teknik, 2012
Electric energy has been transmiting from power station to end user with transmission and distribution lines.Lightning strokes are problems that occure in transmission and distribution lines and make them fault when theelectric energy were transmited ...
Agung Warsito, Abdul Syakur, Liliyana N.S.   +2 more
doaj  

Improving Surge Voltage and Power Loss of the MOV-MOV-C Approach for Low-Scale DC Solid-State Circuit Breaker Applications

IEEE Open Journal of the Industrial Electronics Society
The dc solid-state circuit breaker (SSCB) is commonly used to protect sensitive equipment and enhance system stability by quickly interrupting fault currents, thereby increasing overall safety.
Phanit Sok, Sung-Geun Song, Guangxu Zhou, Feel-Soon Kang   +3 more
doaj   +1 more source

Dielectric Loss and Electrical Conductivity Behaviors of Epoxy Composites Containing Semiconducting ZnO Varistor Particles. [PDF]

Molecules, 2022
Lei L, Chen C, Nie H, Wu X, Tan DQ.
europepmc   +1 more source

Analysis and Implementation of the Crowbar Clamping Circuit for Surge Voltage Reduction in the DC Solid-State Circuit Breaker

IEEE Access
The DC Solid-State Circuit Breaker (SSCB) is usually used to prevent damage to sensitive equipment and ensure system stability by rapidly interrupting fault currents and improving safety.
Phanit Sok, Sung-Geun Song, Feel-Soon Kang   +2 more
doaj   +1 more source

Distributed generation adverse impact on the distribution networks protection and its mitigation. [PDF]

Heliyon, 2022
Takele H.
europepmc   +1 more source