Search Results - "Elkalashy, N.I."

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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Universal arc representation using EMTP by Darwish, H.A., Elkalashy, N.I.

“…A preliminary description of a new arc representation has been introduced in . In which, the Modified Mayr (P-/spl tau/ model) arc equations are solved in the…”
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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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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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Experimental Investigations on Multi-end Fault Location System based on Current Traveling Waves by Elhaffar, A., Elkalashy, N.I., Lehtonen, M.

“…Traveling waves recorders (TWR) are used to accurately find the location of different faults in transmission networks. These recorders are installed at few…”
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DWT and Bayesian technique for enhancing earth fault protection in MV networks by Elkalashy, N.I., Lehtonen, M., Tarhuni, N.G.

“…In this paper, a Bayesian selectivity technique is introduced to identify the faulty feeder in compensated medium voltage (MV) networks. The proposed technique…”
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Modified setting of overcurrent protection for distribution feeders with distributed generation by Sherbilla, N.F, Kawady, T.A, Elkalashy, N.I, Taalab, A.-M.I

“…Connecting Distributed Generators (DGs) into conventional distribution systems leads the protection design assumptions to become incorrect. These generators…”
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Evaluation of chirp detector-based travelling wave localization of earth faults in MV networks by Elkalashy, N.I, Tarhuni, N.G, Elhaffar, A.M, Lehtonen, M

“…In this paper, a chirp detector of the current waveforms is evaluated for locating the earth faults in unearthed MV networks where it is used to precisely…”
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Evaluation of probabilistic-based selectivity technique for earth fault protection in MV networks by Elhaffar, A.M., Elkalashy, N.I., Tarhuni, N.G., Abdel-Fattah, M.F., Lehtonen, M.

“…In a Bayesian selectivity technique has been introduced to identify the faulty feeder in compensated medium voltage (MV) networks. The proposed technique has…”
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Windowed standard deviation-based transient feature extraction for earth fault protection in MV networks by Elkalashy, N.I., Elhaffar, A.M., Abdel-Fattah, M.F., Lehtonen, M., Tarhuni, N.G.

“…In this paper, the windowed standard deviation (WSTD) is used to extract the initial transients created in residual current waveforms generated due to earth…”
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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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Detection of Arcing Faults: Modelling, Simulation, Testing and Algorithms Aspects by Terzija, V., Elkalashy, N.I., Preston, G., Stanojevic, V., Strbac, G.

“…A new adaptive numerical algorithm for overhead line protection is presented in this paper. It uses an advanced fault model taking into account the arcing…”
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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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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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