Results 11 to 20 of about 236 (182)
Reliable directional relaying for T-Connected Series-Compensated transmission lines [PDF]
Scientific ReportsThis 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
Energies, 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
Electricity, 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
Energies, 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
IEEE 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
Tekhnologiya 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
Journal 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
Research on electrothermal characteristics of metal oxide varistor based on multiâphysical fields
IET Generation, Transmission & Distribution, 2022 The electrothermal characteristics of metal oxide varistor (MOV), closely related to its microstructure, are important for studying its failure mechanism.
Qibin Zhou +4 more
doaj +1 more source
Numerical modelling of MOV with Voronoi network and finite element method
High Voltage, 2021 The electrical and thermal characteristics of metal oxide varistor (MOV) are essential for the study of MOV performance and degradation. This paper provides a modelling method of MOV to simulate its microstructure geometry with the Voronoi network and ...
Qibin Zhou +4 more
doaj +1 more source
The effects of electrical degradation on the microstructure of metal oxide varistor [PDF]
2001 IEEE/PES Transmission and Distribution Conference and Exposition. Developing New Perspectives (Cat. No.01CH37294), 2002 In this paper, the findings from systematic experiments with the purpose to determine the degradation effect of single and multiple current pulses on the microstructure of the Metal Oxide (MO) varistor are described. Six distribution class varistors from one manufacturer were used in these experiments.
Mardira, Karl Primardi +2 more
openaire +4 more sources