Results 211 to 220 of about 142,243 (267)
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Half-wavelength power transmission lines
IEEE Spectrum, 1965Because of the progressively greater distances from sources of hydroelectric power to large load centers, there is a constant search for more efficient and less costly means of long-distance transmission. This paper proposes a half-wavelength transmission system for point-to-point transmission of power to eliminate many of the operational and design ...
F. J. Hubert, M. R. Gent
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Power line carrier emissions from transmission lines
IEEE Transactions on Power Delivery, 1992Extensive ground-based and air-based measurements of the three-dimensional power line carrier (PLC) field radiating from various transmission limes and transformer stations were performed. The measurements were conducted in two frequency ranges: below 200 kHz and above 470 kHz.
R.C. Madge, G.K. Hatanaka
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Transmission line based power averaging
Eighteenth Convention of Electrical and Electronics Engineers in Israel, 2002A method for pulsating power filtration is suggested in this paper. The main principle for this kind of solution is based on the fact that the time of appearance of a pulse traveling on a channel (transmission line in this case) is directly proportional to the electrical length of the channel.
D. Shmilovitz, S. Singer
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Power Transmission Lines Monitoring System
2018 International Conference on Industrial Engineering, Applications and Manufacturing (ICIEAM), 2018One of the most urgent problems of power engineering is power systems reliability. Power transmission lines are one of the most widespread elements of power systems. The most frequent cause of technological disturbances on the overhead and cable power transmission lines is insulation breakdown and flashover.
D.A. Polyakov, V.N. Pugach, K.I. Nikitin
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Waves and complex power in transmission lines
IEEE Transactions on Power Delivery, 2003Park approach belongs to the usual procedures specific of the modal analysis. Under this point of view, it can be therefore used in the analysis of three-phase static components, in particular in the study of transmission lines. In this case, the approach replaces the matrix formulation, specific of the modal analysis, with the space-vectors ...
LEVA, SONIA, MORANDO, ADRIANO PAOLO
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Power Line Transmission and Radiation
Space Science Reviews, 1983A power line system consisting of multi-conductors above the ground is decomposed into a metal return (or balanced) and a ground return (unbalanced) circuit in terms of propagation modes. Power line radiation above the ground is sorted into two classes, transition radiation from discontinuities which takes place from a line of finite length and ...
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Power Limits of 220-Kv Transmission Lines
Transactions of the American Institute of Electrical Engineers, 1933For the transmission of power from Boulder Dam to the system of the Southern California Edison Company, numerous studies were made to determine the power limits of various designs of transmission lines, and the maximum generating capacity that could be installed safely at Boulder Dam without incurring instability.
Alex A. Kroneberg, Mabel Macferran
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SUBNANOSECOND POWER CONDITIONING TECHNIQUE USING TRANSMISSION LINE TO TRANSMISSION LINE CHARGING
Twentieth Conference Record on Power Modulator Symposium, 2005High pressure over volted gas switches operating from 200 to 350 atmospheres are capable of switching speeds on the order of a few picoseconds [l]. The successful operation of such switches depends upon the application of voltage to the switch within a time duration of a few nanoseconds. This rapid application of voltage is required to achieve the over
J.P. O'Loughlin, R.P. Copeland
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Lightning attachment to power transmission lines
2012 International Conference on Lightning Protection (ICLP), 2012The effect of lightning channel inclination on the attachment of lightning flashes to UHV transmission lines is investigated using a lightning strike model that takes into account the competing connecting leaders issued from different conductors. The results show that the probability of screening failures increases with increasing inclination of the ...
Vernon Cooray, Takatoshi Shindo
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Power limits of transmission lines
Electrical Engineering, 1952THIS ARTICLE PRESENTS the results of studies of the factors which influence the power limits or design loadings of transmission lines. Recent investigations have shown the principal factors determining the loading of transmission circuits, particularly those for distances of 100 to 600 miles.
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