Results 11 to 20 of about 1,442 (197)
Adjusting the Parameters of Metal Oxide Gapless Surge Arresters’ Equivalent Circuits Using the Harmony Search Method [PDF]
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
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On the Computation of the Voltage Distribution along the Non-Linear Resistor of Gapless Metal Oxide Surge Arresters [PDF]
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 ...
Christos A. Christodoulou +3 more
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Surge arrester leakage current modeling based on pollution layer electrical conductivity estimation [PDF]
Scientific ReportsThe surface leakage current (LC) of metal oxide surge arresters (MOSA) is highly dependent on environmental conditions. This factor influences the modeling of MOSA leakage current as an alternative solution to laboratory tests.
Arian Hoseini Nejadiyan Kooshki +1 more
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Simplified Modeling of Metal Oxide Surge Arresters
Energy Procedia, 2014 AbstractThis paper describes simplified modeling of metal oxide surge arrester (MOSA) to operate analysis. This model is a new model proposed (P-K Model) to verify the accuracy in order to compare with IEEE and Pinceti Model. The simulations are performed with the Alternative Transients Program version of Electromagnetic Transient Program (ATP-EMTP ...
Pramuk Unahalekhaka
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Modelling of Metal Oxide Surge Arresters in Simulation Software DYNAST [PDF]
, 2020 This paper describes the possibilities for mathematical modelling of gap-less surge arresters in simulation software DYNAST. This tool does not belong to standard modelling softwares in the field of electric power engineering.
Síťař, Vladislav, Veleba, Jan
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IET Science, Measurement & Technology, 2021 This paper presents an advanced technique based on cross‐Stockwell transform (XST) and sparse autoencoder to predict the surface contamination severity of metal oxide surge arrester (MOSA) employing leakage current signal.
Arup Kumar Das +2 more
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Simulation of metal oxide surge arresters behavior
2008 IEEE Power Electronics Specialists Conference, 2008 Metal oxide surge arresters are used to protect medium and high voltage systems and equipment against lightning and switching overvoltages. Measurements of the residual voltage of the metal oxide surge arrester indicate dynamic characteristics, and specifically, the residual voltage increases as the current front time descends and the residual voltage ...
Christos A. Christodoulou +3 more
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Condition Monitoring of Metal Oxide Surge Arresters – Case Study
Lightning overvoltage is frequent phenomenon in power system which cannot be avoided, however damaged caused by it can be controlled to certain extent. Metal Oxide Surge Arresters (MOSA) are connected in the system for the protection of transmission and distribution system against lightning over voltages.
Anil S. Khopkar, Umesh N. Soni
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A Simplified Lightning Model for Metal Oxide Surge Arrester [PDF]
, 2002 Lightning strike has been one of the major factors that lead to failure of electrical power systems. In recent years, metal oxide surge arrester has been widely used and it is now an essential item in the insulation coordination for power systems based ...
Mardira, K. P., Saha, T.K.
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New criteria for metal oxide surge arrester condition monitoring based on leakage current analysis: Considering non‐uniform pollution effect [PDF]
IET Generation, Transmission & DistributionThe 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
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