Results 11 to 20 of about 2,670,785 (225)

Preliminary study on pulse width adjustable pulse generator based on the magnetic switch and metal-oxide varistor

open access: yesAIP Advances, 2018
The pulsed power technology has been applied to many defense and industrial fields. Different applications have different demands on the parameters of the pulsed power systems. However, the parameters of the current pulsed power systems are usually fixed
Yancheng Cui   +5 more
doaj   +2 more sources

Comprehensive Analysis of Transient Overvoltage Phenomena for Metal-Oxide Varistor Surge Arrester in LCC-HVDC Transmission System with Special Protection Scheme

open access: yesEnergies, 2022
This paper proposes a systematic and deterministic method for metal-oxide varistor (MOV) surge arrester selection based on the comprehensive analysis in line-commutated converter (LCC)-based high-voltage direct current (HVDC) transmission systems.
Jaesik Kang
doaj   +3 more sources

FDTD Electromagnetic and Thermal Simulation of a Metal Oxide Varistor Element Considering the Temperature Dependence of Its Resistivity

open access: yesElectricity, 2021
Electromagnetic fields and the heat of a metal oxide varistor (MOV), in which a lightning impulse current flows, are calculated using the finite-difference time-domain (FDTD) method.
Tokuya Tanaka   +3 more
doaj   +3 more sources

Reliable directional relaying for T-Connected Series-Compensated transmission lines [PDF]

open access: yesScientific Reports
This article introduces an extensive directional relaying algorithm designed for series-compensated transmission lines. The proposed algorithm relies on observing the locus of the calculated impedance of the change of the positive-sequence circuit.
Mahmoud A. Elsadd   +2 more
doaj   +2 more sources

Measuring the energy handling capability of metal oxide varistors [PDF]

open access: yes16th International Conference and Exhibition on Electricity Distribution (CIRED 2001), 2001
Metal oxide varistors are widely used in many power electronics circuits to protect against transient over voltages. Certain applications are very demanding on the energy handling capability of the varistors. This paper gives an overview of the failure modes of ZnO varistors and investigates their characteristics when subjected to repetitive current ...
Ahmed, M. M. R.   +3 more
core   +4 more sources

Application of Nonlinear Optimization for Fault Location in Transmission Lines with Series Compensation Protected by Varistors

open access: yesEnergies, 2023
This paper introduces a novel approach to fault localization in transmission lines with series compensation using nonlinear optimization. The objective function minimization provides information on the fault distance and the current at which the ...
Simone Aparecida Rocha   +3 more
doaj   +1 more source

Performance Evaluation and Limitations of Overvoltage Suppression Circuits for Low- and Medium-Voltage DC Solid-State Breakers

open access: yesIEEE Open Journal of Power Electronics, 2021
This paper presents a design and performance evaluation of three different overvoltage suppression circuits employed in a solid-state circuit breaker for medium- to high-power and low- to medium-voltage DC grids.
Andreas Giannakis, Dimosthenis Peftitsis
doaj   +1 more source

Influence of ambient temperature on electrical properties of varistor-positor structure

open access: yesTekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2022
Recently, the combined two-layer structure based on varistor ceramics and polymer posistor nanocomposites with carbon filler (known as PolySwitch resettable fuses) has been seen as one of the promising elements for protecting electrical circuits from ...
Alexander Ivanchenko   +1 more
doaj   +1 more source

Faulty Phase Identification for Transmission Line with Metal Oxide Varistor-protected Series Compensator

open access: yesJournal of Modern Power Systems and Clean Energy, 2021
The nonlinear operation of metal oxide varistor (MOV)-protected series compensator in transmission lines introduces complications into fault detection approaches.
Mohammed Hussien Hassan Musa   +3 more
doaj   +1 more source

ANALISIS PERBANDINGAN METAL-OXIDE ARESTER TERHADAP VARIASI ARUS SURJA [PDF]

open access: yes, 2023
Sistem tenaga listrik adalah satu kesatuan yang berfungsi untuk menyuplai tenaga listrik ke konsumen secara kontinyu. Dalam menjalankan fungsinya, pada sistem tenaga listrik dapat terjadi gangguan seperti tegangan lebih akibat arus surja petir maupun ...
Nugroho, Setyo Adi
core   +1 more source

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