Results 11 to 20 of about 3,842 (216)

New criteria for metal oxide surge arrester condition monitoring based on leakage current analysis: Considering non‐uniform pollution effect

open access: yesIET Generation, Transmission & Distribution
The role of surge arresters is vital in power systems' protection against transient overvoltages, which can arise due to occurrences like lightning strikes or switching operations.
Masume Khodsuz   +2 more
doaj   +2 more sources

Modelling and validation of metal oxide surge arrester for very fast transients

open access: yesHigh Voltage, 2018
Metal oxide surge arrester models that are currently on rounds suffer from certain deficiencies and as a consequence, they are not in position to portray accurately the arrester residual voltages.
Kannadasan Raju, Valsalal Prasad
doaj   +2 more sources

High Current Pulse Transducer for Metal-Oxide Surge Arresters [PDF]

open access: yes, 2007
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Gurevich, Vladimir
openaire   +5 more sources

Fuzzy expert system for metal-oxide surge arrester condition monitoring

open access: yesElectrical Engineering, 2020
Metal-oxide surge arresters (MOSAs) play an important role in preventing outage situations and thus in preserving the reliability of electric power system. So far, many MOSA monitoring methods have been developed. These methods propose different indicators that are more or less reliable in MOSA monitoring and diagnostics.
Goran Dobrić, Mileta Žarković
openaire   +2 more sources

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

Characteristics and possibilities of software tool for metal-oxide surge arresters selection [PDF]

open access: yesZbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2012
This paper presents a procedure for the selection of metal-oxide surge arresters based on the instructions given in the Siemens and ABB catalogues, respecting their differences and the characteristics and possibilities of the software tool.
Đorđević Dragan   +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
K.P. Mardira, T.K. Saha
openaire   +1 more source

Optimization of dynamic MOSA model parameters using ATP/EMTP software tool [PDF]

open access: yesZbornik Radova: Elektrotehnički Institut "Nikola Tesla", 2017
This paper demonstrates the procedure for estimating parameters of a dynamic metal-oxide surge arrester model by using a genetic algorithm, implemented in ATP/EMTP graphic preprocessor (ATPDraw) optimization module.
Jasika Ranko   +3 more
doaj   +1 more source

Modeling Metal Oxide Surge Arrester for the Modern Polarization Based Diagnostics [PDF]

open access: yes, 2005
Recently a number of new non-destructive diagnostic techniques have been investigated for the reliable condition assessment of the ageing of metal oxide surge arrester (MOSA).
Mardira, K. P., Saha, T. K.
core   +1 more source

A Review of Current Issues in State-of-Art of Wind Farm Overvoltage Protection

open access: yesEnergies, 2011
This paper elaborates on several important outstanding issues in the state-of-art of overvoltage protection selection for modern wind farms. The lack of experience with this still-new technology, together with the inherent complexity of wind farm ...
Ranko Goić, Petar Sarajčev
doaj   +1 more source

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