نتایج جستجو برای: power cable

تعداد نتایج: 497495  

2012
Wenjie LI Junhua LUO Jiankang ZHAO Shaoxin MENG Rong XIA Xuejin ZHANG Leilei PAN

In order to extract the millivolt range partial discharge(PD) signals drown in the harsh electromagnetic interference for HV power cables, this paper presents a novel antiinterference method, based on fast fourier transform autothresholding method, 1-D discrete wavelet thresholding method and three phase amplitude and arrive-time difference method. This method is examined and proved to be effec...

1997
Jim Nadolny STIRRED CHAMBERS

Total radiated power of a device can be measured using a mode stirred chamber (MSC). The technique is briefly outlined with emphasis on the peak and average error associated with this technique. A transfer standard, advocated by the IEEE EMCS P482 Working Group, is used as a noise source for a cable radiation study which measured and simulated the total radiated power from a cable-like noise so...

2006
VALENTINAS DUBICKAS Hans Edin

Degradation of XLPE insulated power cables by water-trees is a primary cause of failure of these cables. The detection of water-trees and information about the severity of the degradation can be obtained with off-line measurement using dielectric spectroscopy. In many situations only a limited part of the cable may be degraded by the water-trees. In such a situation a method for localization of...

2006
Ravi S. Gorur

This is a project report from the Power Systems Engineering Research Center (PSERC). PSERC is a multi-university Center conducting research on challenges facing a restructuring electric power industry and educating the next generation of power engineers. More information about PSERC can be found at the Center's website: Notice Concerning Copyright Material PSERC members are given permission to ...

2013
Dipankar Dan

Electric Detonators with its two terminal paired cable may act as an efficient receiving antenna. Radiated field from other sources may optimum level of current in the cable and in turn accidental detonation may occur. Present work is focused on estimation of hazardous field strength level. Keywords-Electric detonator,effecive radiated power,mining enviroment.

2009
Aihong TANG Yangyang ZHAO Desheng JIANG ZHAO D. JIANG

The Fiber Bragg Grating (FBG) sensor is used to detect the temperature of the high voltage cable. The temperature measurement system is constructed and the functions of each part of the system is stated in detail. This temperature measurement systems presented in this paper is usefull for the operation of the power cable.

Journal: :journal of mining and environment 0
a. mirzaghorbanali school of civil, mining, and environmental engineering, university of wollongong, nsw, australia n. aziz school of civil, mining, and environmental engineering, university of wollongong, nsw, australia

the load transfer mechanisms of cable bolts differ from those for normal rebar bolts. the cable bolts used in mines are basically steel strands with different constructions depending on the number of wires or elements and the way they are laid. tendon bolts (rebar and cable) are normally evaluated for their strength and load transfer properties. the tendon strength can be evaluated by the tensi...

2011
Max Blanco Philip A. Wilson

An Autonomous Underwater Vehicle refuel station is proposed. The power source is located on board a surface vessel, while the AUV is serviced at depth. The structure which connects the two craft is modelled as a cable-beam. Transverse oscillations of this cable-beam system are investigated through a fourth-order differential equation.

2007
Nigel HAMPTON

Crosslinked polyethylene (XLPE) has become the globally preferred insulation for power cables, both for distribution and transmission system applications. This insulation system provides cost efficiency in operation and procurement, as well as lower environmental and maintenance requirements when compared to older impregnated paper systems. The purpose of this paper is to outline some of the de...

2014
S. SREMAC

S. Sremac, P. Gladović, M. Đelošević, B. Matić, A. Matić, Faculty of Technical Sciences, University of Novi Sad, Novi Sad, Serbia. This paper discusses the issues of product design and the procedure of developing polymer packaging as one of the most important engineering tasks. For the purpose of packing power cables a polymer packaging has been designed in the form of drum. Packaging and many ...

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