Results 11 to 20 of about 192,055 (298)

Utilization of Cable Screen Earthing Current for Detection and Location of Earth Faults in Medium Voltage Networks

open access: yesEnergy Engineering and Control Systems, 2021
The paper presents issues related with detection and location of earth faults in medium voltage (MV) networks. Attention is paid on cable and cable-overhead lines. The criterion value – cable screen earthing current is presented.
Krzysztof Łowczowski   +3 more
doaj   +1 more source

Thermal Analysis of the Medium Voltage Cable

open access: yesEnergies, 2021
The use of high voltage power cables in distribution and transmission networks is still increasing. As a result, the research on the electrical performance of cable lines is still up to date.
Tomasz Szczegielniak   +2 more
doaj   +1 more source

Monitoring, Detection and Locating of Transient Earth Fault Using Zero-Sequence Current and Cable Screen Earthing Current in Medium Voltage Cable and Mixed Feeders

open access: yesEnergies, 2022
This paper presents the final development of an expert system utilizing a measurement of cable screen earthing transient current. The developed system allows for identification and location of earth fault in underground cable and mixed lines (underground
Krzysztof Łowczowski, Bartosz Olejnik
doaj   +1 more source

The Effect of Protrusions on the Initiation of Partial Discharges in XLPE High Voltage Cables [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2021
This paper is focusing on 3D Finite Elements Analysis (FEA) based modelling of protrusions as defects or imperfections in the XLPE high voltage cable. This study is aiming to examine the impact, protrusions have on the initiation of partial discharges ...
Mohammad AlShaikh Saleh   +4 more
doaj   +1 more source

Correct Cross-Section of Cable Screen in a Medium Voltage Collector Network with Isolated Neutral of a Wind Power Plant

open access: yesEnergies, 2021
The article discusses the selection of cables for power lines connecting wind turbine generators at the wind power plant. The screen cross-section of these cables should be selected considering the value of the screen current at double line-to-earth ...
Huthaifa A. Al_Issa   +5 more
doaj   +1 more source

Flexible Low-Loss Thin Flimsy Stripline for High-Speed Connections

open access: yesMicromachines, 2022
Increasing numbers of antennas are being placed inside laptop screen bezels. Connections between antennas and laptop bases have become challenging owing to space limitations.
Jau-Jr Lin, Yi-Da Tsai
doaj   +1 more source

Analysis of Overvoltages Appearing in One-Sidedly Ungrounded MV Power Cable Screen

open access: yesEnergies, 2020
Changing the connection type of a medium voltage (MV) cable screen is linked to a decrease in power loss, although it may also lead to the generation of overvoltage in a metallic cable screen, which is hazardous for proper cable line work. In this paper,
Aleksandra Schött-Szymczak   +1 more
doaj   +1 more source

Detection and Location of Earth Fault in MV Feeders Using Screen Earthing Current Measurements

open access: yesEnergies, 2020
The paper analyzes the utilization of cable screen currents for earth fault identification and location. Attention is paid on cable and mixed feeders—cable and overhead lines. The principle of operation is based on utilization of 3 criterion values:
Krzysztof Lowczowski   +3 more
doaj   +1 more source

A generalized approach to deduce the impedance and admittance of underground cable containing N semiconductor screens

open access: yesEngineering Science and Technology, an International Journal, 2022
Cable routines of most of the commercial transient simulation software like EMTP do not have provision for including the contribution of semiconductor screen in cable impedance and admittance model, although mathematical formulations of impedance and ...
Swarnankur Ghosh, Supriyo Das
doaj   +1 more source

Design, Manufacture, and Test of a 30 m 10 kV/2.5 kA Concentric HTS Cable Prototype for Urban Grid

open access: yesIEEE Access, 2021
High temperature superconducting (HTS) cable, with significant low dissipation and massive current carrying capability, is a promising solution for the shortage of transmission capacity in mega-cities.
Bangzhu Wang   +11 more
doaj   +1 more source

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