Results 21 to 30 of about 1,442 (197)

A Metal Oxide Surge Arrester Model with Active V-I Characteristics

open access: bronzeElectrical Engineering in Japan, 1996
Generally a model of Metal Oxide Surge Arrester (MOSA) for numerical analysis uses a nonlinear resistance. But actual Voltage-Current (V-I) characteristics of MOSA have a hysteresis loop in the time domain like the i-Φ characteristic of a transformer and frequency dependency.
Toyohisa Hagiwara   +4 more
openalex   +3 more sources

Analysis of Grading Ring Design Parameters and Heat Sink Numbers Effect on Voltage Distribution and Leakage Current in Metal Oxide Surge Arrester

open access: greenIranian Journal of Electrical and Electronic Engineering, 2014
Metal oxide surge arresters (ZNO) are used widely in power system to protect equipments from over voltages. Non uniform potential distribution leads to the depressed service life and low safe reliability, so grading ring is applied on HV surge arrester ...
M. Khodsuz, M. Mirzaie
doaj   +1 more source

An Energy Depandent Model of a Metal Oxide Surge Arrester

open access: bronzeIEEJ Transactions on Power and Energy, 1994
Soji Kojima   +2 more
openalex   +3 more sources

Condition Assessment of Metal Oxide Surge Arrester Based on Multi-Layer SVM Classifier

open access: greenIranian Journal of Electrical and Electronic Engineering, 2015
This paper introduces the indicators for surge arrester condition assessment based on the leakage current analysis. Maximum amplitude of fundamental harmonic of the resistive leakage current, maximum amplitude of third harmonic of the resistive leakage ...
M Khodsuz, M Mirzaie
doaj   +1 more source

Metal Oxide (MO) Surge Arresters - Stresses and Test procedures

open access: green, 2013
Fil: Richter, Bernhard. No especifica;
Bernhard Richter   +19 more
openalex   +2 more sources

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

open access: greenIranian 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   +1 more source

Grading ring parameters optimization for 220 kV metal‐oxide arrester using 3D‐FEM method and bat algorithm

open access: yesIET Science, Measurement & Technology, 2021
Aging of metal oxide surge arresters is mainly affected by the high electric stress near the high voltage electrode. It has been observed that the distribution of voltage and electric field along an arrester is non‐uniform.
Nadjim Alti   +2 more
doaj   +1 more source

Modern electrical diagnostics for metal oxide surge arresters [PDF]

open access: yesIEEE/PES Transmission and Distribution Conference and Exhibition, 2003
The aim of this study is to propose simple and reliable techniques to assess the condition of metal oxide arrester based on the dielectric response techniques. A number of modern electrical diagnostics for Metal Oxide Surge Arrester (MOSA) are discussed in this paper. The techniques included return voltage, decay voltage and polarisation/depolarisation
Mardira, K. P., Saha, Tapan K.
openaire   +2 more sources

Estimation of the parameters of metal oxide gapless surge arrester equivalent circuit models using genetic algorithm

open access: greenElectric Power Systems Research, 2011
C A Christodoulou   +2 more
exaly   +2 more sources

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