Results 21 to 30 of about 31,423 (360)

Safety assessment of high voltage substation earthing systems with synthetic geotextile membrane

open access: yesJournal of Mechatronics, Electrical Power, and Vehicular Technology, 2019
High voltage substations built within areas prone to vegetation or with unfavourable subgrade conditions are paved with the addition of punched geotextiles and non-conductive synthetic fabrics underneath switchyard surfacing.
Mostafa Nazih
doaj   +1 more source

An equivalent circuit for the evaluation of cross-country fault currents in medium voltage (MV) distribution networks [PDF]

open access: yes, 2018
A Cross-Country Fault (CCF) is the simultaneous occurrence of a couple of Line-to-Ground Faults (LGFs), affecting different phases of same feeder or of two distinct ones, at different fault locations.
Gatta, Fabio Massimo   +3 more
core   +1 more source

Fire in the Earth System

open access: yesScience, 2009
Burn, Baby, Burn Wildfires can have dramatic and devastating effects on landscapes and human structures and are important agents in environmental transformation. Their impacts on nonanthropocentric aspects of the environment, such as ecosystems, biodiversity, carbon reserves, and climate, are often overlooked.
Bowman, David M. J. S.   +21 more
openaire   +4 more sources

Optimal Design of the Vertical Earthing with Electrodes Arranged in Line

open access: yesApplied Sciences, 2020
The design methods of earthing from standards recommend the choice of electrode lengths and propose that the distances between electrodes to be 1−3 times larger than their length.
Sorin Gheorghe Pavel   +4 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

Assessing the ecological soundness of organic and conventional agriculture by means of life cycle assessment (LCA) - a case study of leek production [PDF]

open access: yes, 2009
Purpose – Sustainable agriculture implies the ability of agro-ecosystems to remain productive in the long-term. It is not easy to point out unambiguously whether or not current production systems meet this sustainability demand.
Eline de Backer   +4 more
core   +1 more source

Earth system economics: a biophysical approach to the human component of the Earth system [PDF]

open access: yesEarth System Dynamics, 2020
Abstract. The study of humans has largely been carried out in isolation from the study of the non-human Earth system. This isolation has encouraged the development of incompatible philosophical, aspirational, and methodological approaches that have proven very difficult to integrate with those used for the non-human remainder of the Earth system. Here,
E. D. Galbraith   +2 more
openaire   +5 more sources

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

Bearing Grounding Mechanical Properties of Engineering Vehicle Retreaded Tire [PDF]

open access: yesE3S Web of Conferences, 2020
In this study, a multivariate composite layer model, computer geometry models, contact pair models, finite element analysis (FEA) models, and bearing grounding mechanical property test system were constructed.
Wang Qiang, Jiang Li
doaj   +1 more source

Feasibility study on lengthening the high-voltage cable section and reducing the number of cable joints via alternative bonding methods [PDF]

open access: yes, 2019
The mesosphere is perhaps the least explored region in the atmosphere with very few methods of observing. This thesis will primarily be exploring a new technique for measuring the distribution of kinetic energy in the mesosphere across a wide range of ...
Li, Mingzhen   +5 more
core   +2 more sources

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