Results 61 to 70 of about 22,042 (209)

The Recognition of Fires Originating from Photovoltaic (PV) Solar Systems [PDF]

open access: yes, 2015
There has been an observable increase in the fitting of photovoltaic (PV) solar panels on the roofs of buildings in the UK over the last decade. The origin of some fires in domestic and commercial properties has been attributed to PV systems.
Prometheus Forensic Services Limited   +1 more
core  

Influence of Dynamic Properties of Nonlinear Over-Voltage Limiter on Over-Voltage Limitation in Distribution Networks

open access: yesИзвестия высших учебных заведений и энергетических объединенний СНГ: Энергетика, 2009
One of the most efficient means of over-voltage reduction in arcing ground short-circuits is an application of   a nonlinear over-voltage limiter. It is necessary to take into account dynamic properties of the nonlinear over-voltage limiter in order to ...
A. N. Bokhan   +2 more
doaj   +1 more source

Testing System for the On-Site Checking of Magneto-Thermal Switches with Arc Fault Detection

open access: yesEnergies, 2020
Arcing is a harmful condition that can lead to electrical fires. The U.S. National Electrical Code requires the installation of electric arc breakers in all residential areas. However, such devices can fail, and therefore, may not work when needed.
Giovanni Bucci   +5 more
doaj   +1 more source

Field Emission Dark Current of Technical Metallic Electrodes

open access: yes, 2007
In the framework of the Low Emittance Gun (LEG) project, high gradient acceleration of a low emittance electron beam will be necessary. In order to achieve this acceleration a -500 kV, 250 ns FWHM, pulse will be applied in between two electrodes.
Anders   +26 more
core   +1 more source

Arcing High Impedance Fault Detection Using Real Coded Genetic Algorithm

open access: yes, 2007
Safety and reliability are two of the most important aspects of electric power supply systems. Sensitivity and robustness to detect and isolate faults can influence the safety and reliability of such systems.
Al-Othman, A.K.   +2 more
core  

Study on the influence of moving contact speed on the breaking characteristics of DC miniature circuit breakers

open access: yesAIP Advances
The moving contact speed of DC miniature circuit breakers (MCBs) directly affects the arcing characteristics in the arc chamber, thus affecting their breaking capacity. Based on this, this paper studies the arcing characteristics in the arc chamber under
Jie Zhang   +4 more
doaj   +1 more source

Secondary Arc Extinction in Extra High Voltage Systems Using Grounding Switches

open access: yesDiyala Journal of Engineering Sciences, 2014
Long Extra High Voltage (EHV) transmission systems tend to bring a pronounced state of secondary arcing. Therefore, an essential pre-requisite for single-phase-switching application, is the possibility and speed of secondary arc final extinction during ...
Qais M. Alias, Wafaa F. Tobia
doaj   +1 more source

Classification of EMI discharge sources using time–frequency features and multi-class support vector machine [PDF]

open access: yes, 2018
This paper introduces the first application of feature extraction and machine learning to Electromagnetic Interference (EMI) signals for discharge sources classification in high voltage power generating plants.
Boreham, Philip   +5 more
core   +2 more sources

Novel Series Arc Fault Detector Using High-Frequency Coupling Analysis and Multi-Indicator Algorithm

open access: yesIEEE Access, 2019
In the field of arc fault detection, it is universally acknowledged that it is very hard to judge whether there is an arc fault through signals of the main line when a masking load (such as air compressors, lamps with dimmers, and so on) is in parallel ...
Guanghai Bao, Run Jiang, Xiaoqing Gao
doaj   +1 more source

Space Station Freedom solar array panels plasma interaction test facility [PDF]

open access: yes, 1989
The Space Station Freedom Power System will make extensive use of photovoltaic (PV) power generation. The phase 1 power system consists of two PV power modules each capable of delivering 37.5 KW of conditioned power to the user.
Martin, Donald F., Mellott, Kenneth D.
core   +1 more source

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