Results 151 to 160 of about 123,346 (203)
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Maintenance practices for transmission overhead lines
9th IET International Conference on Advances in Power System Control, Operation and Management (APSCOM 2012), 2012Overhead lines (OHL) operating at 400kV, form the backbone of CLP Power's transmission network. Unlike underground cables, overhead lines are vulnerable to external environmental attacks, such as adverse weather, high humidity, pollution, ground stability, vegetation, and flying objects etc.
M.K. Lee, C.W. Pak
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Robotic Maintenance of Overhead Transmission Lines
IEEE Power Engineering Review, 1986This paper covers the design, assembly, and field testing of the TOMCAT Component Evaluation Unit (CEU). TOMCAT is an acronym for ?eleoperator for O?perations, M?aintenance, and C?onstruction using A?dvanced ?echnology. The unit was developed in the performance of Phase 2 of EPRI Project No.
John H. Dunlap +2 more
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Overhead transmission lines - refurbishment and developments
Power Engineering Journal, 1994This article summarises the position with regard to National Grid Company's transmission system and the changes to it to meet the rapidly changing demands of electricity generation and transmission in England and Wales. It then outlines NGC's principal objectives for developments relating to overhead lines and comments on how these relate to the latest
J.M. Ferguson, R.R. Gibbon
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Conductor optimisation for overhead transmission lines
Proceedings of the Inaugural IEEE PES 2005 Conference and Exposition in Africa, 2006Continuous changes in the cost of suitable (conductive) material for bare overhead conductors, changes in electrical and mechanical requirements, and improvements in manufacturing technology, have resulted in the development of a variety of possible applications or options for overhead transmission lines. In the early days, simple copper wire or copper
D. Dama, D. Muftic, R. Vajeth
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Span of overhead transmission lines
The calculation tasks of the span length of electrical transmission lines, which are constructed on the basis of ferroconcrete, composite, metal lattice and polyhedral transmission towers, using of approximating functions are considered. The span length is determined with the help of the continuous functions, which allows to search it for any ...Kimstach, O. +2 more
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On radiation from overhead transmission lines
Proceedings of the IEE - Part III: Radio and Communication Engineering, 1950The general problem of radiation from lines is discussed and the theoretical background is sketched. The radiation is calculated by the usual approximate method, i.e. the current distribution of the principal wave in an infinite line is first determined, and the radiation field of a finite line is then calculated on the assumption that the current ...
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Modeling overhead transmission lines for line arrester studies
IEEE Power Engineering Society General Meeting, 2004., 2005Surge arresters are installed in transmission lines to improve their lightning performance. To date simulation, usually based on EMTP-like tools, has been extensively used for evaluation of line arrester energy stresses. However, simulation results depend on the models chosen for representing the line.
J.A. Martinez, F. Castro-Aranda
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Analytical formulation of overhead transmission lines loadability characteristics
2018 International Symposium on Power Electronics, Electrical Drives, Automation and Motion (SPEEDAM), 2018This paper deals with the loadability characteristics of overhead transmission lines (OHLs). The target is to provide a general analytical formulation of the loadability characteristics of uncompensated OHLs. This is a completely new approach: no previously published work has adopted an analytical approach to characterize the different regions of the ...
Lauria, Davide, Quaia, Stefano
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Overhead Transmission Line Vibration and Galloping
2008 International Conference on High Voltage Engineering and Application, 2008Overhead transmission line vibration and galloping have been a design and operating problem since early years of last century. The three forms of wind-induced conductor vibrations are Aeolian vibration, galloping and subspan oscillation. Aeolian vibration is caused by an alternating wind force, which arises from a pressure difference associated with a ...
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Overhead Transmission line Uprating and Upgrading
20182018 PES T&D Panel ...
O. Lynch +3 more
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