Results 1 to 10 of about 436,131 (205)
Leakage Current Measurements of Surge Arresters
Energies, 2023 The paper presents the methods of assessing the technical condition of varistor surge arresters used in laboratory tests and in operation—performed without disconnecting the arresters from the network.
Leszek Litzbarski +2 more
exaly +4 more sources
Detection of Failures in Metal Oxide Surge Arresters Using Frequency Response Analysis. [PDF]
Sensors (Basel), 2023 This work presents an innovative application of Frequency Response Analysis (FRA) in order to detect early degradation of Metal Oxide Surge Arresters (MOSAs). This technique has been widely used in power transformers, but has never been applied to MOSAs.
Zacarias TG +9 more
europepmc +2 more sources
Research on Field Source Characteristics of Leakage Current of Arrester Based on TMR Sensor [PDF]
Sensors, 2023 The status of zinc oxide (ZnO) arresters is directly related to the safety of power grids. However, as the service life of ZnO arresters increases, their insulation performance may decrease due to factors such as operating voltage and humidity, which can
Yameng Fu +8 more
doaj +2 more sources
The evolution characteristics of leakage current in traction network surge arresters under complex operating conditions [PDF]
Scientific ReportsDue to frequent load fluctuations, significant impacts, and substantial harmonic distortion on heavy-load railways, leakage currents monitored by surge arresters exhibit considerable variation.
Wang Pengxiong +3 more
doaj +2 more sources
Energies, 2018 The voltage distribution along the non-linear resistance of metal oxide surges is of great importance for their proper operation, since the non-uniform potential distribution results in higher thermal stresses of the varistor discs near the high voltage ...
Valeri Mladenov +2 more
exaly +2 more sources
Energies, 2017 The appropriate circuit modeling of metal oxide gapless surge arresters is critical for insulation coordination studies. Metal oxide arresters present a dynamic behavior for fast front surges; namely, their residual voltage is dependent on the peak value,
Christos A. Christodoulou +4 more
doaj +2 more sources
The Testing Of High Voltage Silicon Carbide Lightning Arresters
Tikrit Journal of Engineering Sciences, 2022 The majority of high voltage gapped silicon carbide lightning arresters on transmission and sub transmission systems have been in service for over 10 years.
Arkan A. Hussein
doaj +1 more source
Quality Assessment of Low Voltage Surge Arresters
IEEE Access, 2022 Users expect reliable operation of the surge arrester during overvoltages, which may originate from a switching process or a lightning discharge. The necessary conditions to guarantee these expectations are: appropriate construction of the surge arrester,
L. Litzbarski +6 more
semanticscholar +1 more source
Energies, 2023 In this paper, we propose a mitigation method for reducing lightning-induced insulator voltages based on the installation of low-voltage surge arresters aligned parallelly to the insulator.
André M. de Morais +2 more
doaj +1 more source
Study on lightning protection scheme of multi-terminal MMC-MVDC distribution system
High Voltage, 2020 Based on a ±10 kV three-terminal MMC-MVDC (medium voltage DC distribution system based on modular multilevel converter) system, in this study, the authors mainly study on the influencing factors and protection schemes of the lightning intruding ...
Yuqun Gao +7 more
doaj +1 more source