Search Results - "Izzularab, M.A."

Modeling and experimental verification of high impedance arcing fault in medium voltage networks by Elkalashy, N.I., Lehtonen, M., Darwish, H.A., Izzularab, M.A., Taalab, A.-M.I.

“…A high impedance arcing fault due to a leaning tree in medium voltage (MV) networks is modeled and experimentally verified. The fault is represented in two…”
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DWT-Based Detection and Transient Power Direction-Based Location of High-Impedance Faults Due to Leaning Trees in Unearthed MV Networks by Elkalashy, N.I., Lehtonen, M., Darwish, H.A., Taalab, A.-M.I., Izzularab, M.A.

“…Electrical faults due to leaning trees are common in Nordic countries. This fault type has been studied in and it was found that the initial transients in the…”
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Loading different sizes of titania nanoparticles into transformer oil: A study on the dielectric behavior by Elsad, R. A., Mansour, Sh. A., Izzularab, M. A.

“…TiO 2 (titania) nanoparticles (NPs) were successfully synthesized by the sol–gel route with different calcination temperature varied from 300 to 500 °C. The…”
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Dielectric spectroscopic analysis of polyvinyl chloride nanocomposites loaded with Fe2O3 nanocrystals by Mansour, Sh. A., Elsad, R. A., Izzularab, M. A.

“…Iron oxide (α‐Fe2O3) nanocrystals powder was successfully synthesized via the sol‐gel method. The microstructural examination of the synthesized nanocrystals…”
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DWT-Based Investigation of phase currents for Detecting High Impedance Faults Due to Leaning Trees in Unearthed MV Networks by Elkalashy, N.I., Lehtonen, M., Darwish, H.A., Izzularab, M.A., Taalab, A.-M.I.

“…In this paper, features of earth faults due to leaning trees are extracted from the network phase currents using the discrete wavelet transform (DWT). Due to…”
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Overvoltage investigation of wind farm under lightning strokes by Abd-Elhady, A.M, Sabiha, N.A, Izzularab, M.A

“…Wind turbine generators are frequently subjected to lightning due to their locations and height. So, the performance of wind farm under such events is worthy…”
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Clean fog evaluation of RTV silicone rubber coatings with different thicknesses and pollution levels by Abd-Elhady, A.M., Izzularab, M.A.

“…Coating of room-temperature vulcanized (RTV) silicone rubber is increasingly being used by power transmission utilities. This is to overcome the contamination…”
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Transformer modeling with internal incipient faults by Sabiha, N.A., Izzularab, M.A.

“…The arc effect on the transformer behavior has been reported. However, the arc has been modeled using square wave that is a static one and does not dynamically…”
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Enhanced Commutation Circuit Design of hvdc Circuit Breaker Using EMTP by Darwish, H.A., Izzularab, M.A., Elkalashy, N.I.

“…In this paper, electromagnetic transient program (EMTP) aided design tool for active commutation circuit of an HVDC circuit breaker is presented. The breaker…”
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Feature Extraction of High Impedance Arcing Faults in Compensated MV Networks. Part II: DWT-Based Analysis of Residual Components by Elkalashy, N.I., Lehtonen, M., Darwish, H.A., Taalab, A.-M.I., Izzularab, M.A.

“…Electrical faults due to leaning trees have been studied in [1]-[2] and it was found that the initial transients due to the associated arc reignitions are…”
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Verification of DWT-based detection of high impedance faults in MV networks by Elkalashy, N.I, Lehtonen, M, Darwish, H.A, Taalab, A.-M.I, Izzularab, M.A

“…The faults due to leaning trees are common in Nordic Distribution networks. In [1], the detection of this fault type has been discussed and the faulty section…”
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Operation evaluation of DWT-based earth fault detection in unearthed MV networks by Elkalashy, N.I., Lehtonen, M., Darwish, H.A., Taalab, A.-M.I., Izzularab, M.A.

“…A novel selectivity technique to estimate the faulty feeder in MV networks was introduced in [1]. This technique depended on the directionality of discrete…”
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Feature Extraction of High Impedance Arcing Faults in Compensated MV Networks. Part I: DWT-Based Analysis of Phase Quantities by Elkalashy, N.I., Lehtonen, M., Darwish, H.A., Taalab, A.-M.I., Izzularab, M.A.

“…In this paper, the initial transients in the electrical network due to arc reignitions associated with high impedance faults caused by leaning trees are…”
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Modeling and Experimental Verification of a High Impedance Arcing Fault in MV Networks by Elkalashy, N.I., Lehtonen, M., Darwish, H.A., Izzularab, M.A., Taalab, A.I.

“…In this paper, a high impedance arcing fault of the tree leaning type in medium voltage (MV) networks is modeled and experimentally verified. The fault is…”
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Real-time testing of hvdc circuit breakers Part 1: bench test development by Darwish, H.A., Izzularab, M.A., Elkalashy, N.I.

“…In this paper, a new real-time testing technique for hvdc circuit breakers using the Electromagnetic Transient Program (EMTP) is presented. Full-size…”
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On-line diagnosis of incipient faults and cellulose degradation based on artificial intelligence methods by Izzularab, M.A., Aly, G.E.M., Mansour, D.A.

“…In this paper, a new artificial intelligence technique is proposed to detect incipient faults and cellulose degradation in power transformers using dissolved…”
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Real-time testing of hvdc circuit breakers part II: real-time cases by Darwish, H.A., Izzularab, M.A., Elkalashy, N.I.

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Estimating the insulation strength of two series non-ceramic dielectrics on distribution systems: a statistical approach by Shwehdi, M.H., Farag, A.S., Izzularab, M.A.

“…Distribution lines are spanned on a much larger area as compared to transmission lines and, therefore, are more often susceptible to lightning strokes. On the…”
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Risk-of-failure calculation accuracy by Farag, A.S., Shewhdi, M.H., Izzularab, M.A., Cheng, T.C.

“…This paper presents a new method of risk-of-failure calculation for individual insulation at different stresses. The method gives some useful information about…”
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