Relevant bibliographies by topics / Cables lines

Academic literature on the topic 'Cables lines'

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Published: 30 May 2022
Last updated: 31 May 2022

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Journal articles on the topic "Cables lines"

1

Korolchenko, Dmitry, Tatiana Eremina, and Leonid Tanklevsky. "Operation of cable lines under fire conditions." E3S Web of Conferences 221 (2020): 02007. http://dx.doi.org/10.1051/e3sconf/202022102007.

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Branched cable communications are carriers of fire load, they are tracks along which fire spreads in buildings and structures. Therefore, currently, fire safety of cables is one of the most important tasks of the cable industry. The spread of flames in vertical bunch wiring depends on the following factors: the amount of combustible material that is exposed to high temperatures, geometric shapes of cables and their mutual location when laying, the ignition temperature of gases emitted by cables, the volume of combustible gases emitted by cables at a certain elevated temperature, the room capacity and volume of air passing through the cable structure, cable devices. Analysis of regulatory documents revealed some key differences in the methodology of standards. It was found that the spread of fire is not only affected by the volume of laid cables, but also by their mutual placement in space. A direct correlation was found between the influence of the crosssection of the cable core and preservation of the cable line in case of fire. Parameters were determined for the preservation of serviceability under fire exposure in the case of bunch and in the case of single wiring. It has been determined that it is impossible to spread the results of fire tests in case of single wiring in accordance with GOST IEC 60331-21-2011 and in case of bunch wiring in accordance with GOST IEC 60332-3-22-2011 to the results of tests in accordance with GOST R 53316-2009 for the preservation of operability of cable lines. The parameters of fire resistance and operability of cable products under the influence of flame depending on the type of cables and the method of their installation have been determined.
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Korotkevich, M. A., and S. N. Azarov. "The Evaluation of Impact of Cable Power Lines on the Environment." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 62, no. 5 (October 4, 2019): 422–32. http://dx.doi.org/10.21122/1029-7448-2019-62-5-422-432.

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The thermal impact of cable power lines and structural materials of cables on the environment has been considered. A quantitative evaluation of the thermal impact of electrical cables with cross-linked polyethylene insulation on the environment was carried out using the Elcut program. Analysis of the temperature field near the loaded cable line of 10 kV demonstrated high values of soil temperature that negatively affects its redox potential and living organisms. To evaluate the environmental impact of electrical cable materials, an approach has been developed that takes into account not only the toxicity of the materials but also their volumetric content in the cable. Cable lines with cables with traditional paper-oil insulation cause more damage to the environment than cable lines with cables, insulated with crosslinked polyethylene. The environment, in turn, also has an impact on the electrical cables: the values of long-term permissible load currents depend on the ambient temperature (when laying cables in the open air, in an earthen trench or in cable rooms). The impact of solar radiation on the thermal conditions of the electric cable is estimated. A comparative analysis of the complex environmental impact of electric cables with traditional insulation and insulation of crosslinked polyethylene demonstrated that unarmored cable with crosslinked polyethylene insulation at a voltage of 10 kV (regardless of the type of its shell) causes less damage to the environment than the same traditional cable throughout the considered temperature range on their surfaces.
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Tajima, K., and H. Masuda. "EXTRACTION OF ROAD-CROSSING POWER AND COMMUNICATION LINES FROM MOBILE MAPPING DATA." ISPRS Annals of Photogrammetry, Remote Sensing and Spatial Information Sciences V-2-2020 (August 3, 2020): 297–304. http://dx.doi.org/10.5194/isprs-annals-v-2-2020-297-2020.

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Abstract. In residential areas, maintenance of power and communication lines is an important issue. In recent years, the frequency and power of typhoons and storms have significantly increased. If utility poles incline due to strong winds, slack cables may contact with large vehicles. For automatically detecting loose road-crossing cables in wide areas, the MMS is very promising. However, when roadcrossing cables are measured using the MMS, large portions of points on cables may be lost, because the directions of laser beams are nearly parallel to the directions of road-crossing cables, and therefore, the laser beams cross road-crossing cables only a small number of times. In this paper, we propose a new method for reconstructing cables crossing roads. In our method, road-crossing cables are reconstructed using both point clouds and camera images. While point clouds of road-crossing cables may be partly missing, their camera images can be captured with little occlusion. Missing portions are recovered using lines extracted from camera images. First, points of each cable are extracted from a point cloud, and the 3D vertical plane on which the cable exists are calculated. From camera images, 2D line segments are extracted as candidates of cable lines. 2D line segments are projected onto the 3D vertical plane using the pinhole camera model. Finally, 3D cable lines are reconstructed on the 3D vertical plane from the merged points. In our experiments, road-crossing cables could be sufficiently extracted using our method.
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Korotkevich, M. A., S. I. Podgaiskiy, and A. V. Golomuzdov. "THE EFFICACY OF THE CABLES OF 6–110 KW WITH XLPE INSULATION. Part 2." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 60, no. 6 (November 23, 2017): 505–22. http://dx.doi.org/10.21122/1029-7448-2017-60-6-505-522.

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The assessment of the suitability of cables of 6–110 kW with XLPE insulation in comparison with cables of the same voltage but possessing paper-oil insulation has been fulfilled on the basis of the method of multi-objective optimization that makes it possible to account not only the quantitative characteristics (of reduced costs), but also qualitative ones. As an indicator of the reliability of the cable line the maximum mean time to failure (the value inversely proportional to the parameter of succession of failures), which is an order more for cable lines with XLPE insulation than for cable lines with paper insulation, is adopted. A comprehensive assessment of the convenience of installation of cable lines revealed that the installation of cable with XLPE insulation features a 1.2–1.6 times easier installation as compared to three-wire (voltage 10 kW) and 1.4 times easier installation as compared to single-core oil-filled cables (voltage of 110 kW). The efficacy of the cables 6–110 kW with XLPE insulation is proved on the basis on the method of multi-objective optimization, that took into account as the costs for the construction and operation of cable lines and the reliability of its operation, ease of its installation and other quality indicators. If the goals taken into account are considered as equally important, the polyethylene-insulated cables for a voltage of 10–110 kW is more efficient as compared to three-wire (voltage 10 kW) and solid (110 kW) cables with paper insulation. Herewith, the cost of the cable with XLPE insulation may exceed the cost of cable with paper insulation up to two times. If the most important aim is to provide the minimum reduced costs for the construction and operation of the cable line, the use of cables with XLPE insulation for voltage of 10 kW is most advisable in individual cases.
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Barzegaran, Mohammadreza, and Osama A. Mohammed. "Multi-dipole modeling of XLPE cable for electromagnetic field studies in large power systems." COMPEL: The International Journal for Computation and Mathematics in Electrical and Electronic Engineering 33, no. 1/2 (December 20, 2013): 3–13. http://dx.doi.org/10.1108/compel-11-2012-0360.

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Purpose – In this paper, modeling of the XLPE cable for electromagnetic signature study at a far distance is proposed. The paper aims to discuss these issues. Design/methodology/approach – Due to the very small ratio of the dimensions of cables to the dimensions of the whole system, using actual geometry of the cables with all layers in this study causes deformation of the cable's model. Therefore, multi-dipole modeling is used for modeling the cables. Findings – This model includes specific voltages and currents in lines and nodes, respectively. Radiated electric and magnetic fields at a far distance are selected as the index of appropriateness of the model. Originality/value – In order to investigate the accuracy of the model, various configuration of the cable is studied. Additionally, coupling of the cable with an electrical machine is investigated. They all show that the equivalent models can be used in place of the actual model for signature studies.
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Korotkevich, M. A., S. I. Podgaiskiy, and A. V. Golomuzdov. "THE EFFICACY OF THE CABLES OF 6–110 KV WITH XLPE INSULATION. Part 1." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 60, no. 5 (September 28, 2017): 417–32. http://dx.doi.org/10.21122/1029-7448-2017-60-5-417-432.

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The assessment of the suitability of cables of 6–110 kV with XLPE insulation in comparison with cables of the same voltage but possessing paper-oil insulation has been fulfilled on the basis of the criterion of reduced costs. Thus, the comparison was undertaken between cables of various design and material of insulation: three-core paper insulated ones vs. three-core XLPE insulated ones; three-core paper-insulated ones vs. solid wires with XLPE insulation; single-core oil-filled cables of 110 kV with paper insulation vs. solid wires of 110 kV with XLPE insulation. The increase in long-term permissible current loads for cables with XLPE insulation because of the larger permissible temperature of heating in comparison with cables with paper-oil insulation complies with as would increase in the cross-sectional area of cable cores (equal to 0.61 from the original) and therefore reduces the cost of the cable by reducing the cost of manufacture of conductors. The reduced costs of the construction and operation of cable lines with XLPE insulation (accounting the increase in the cost of a cable 1.2 and 2 times as compared with the cost of a cable with three-core insulation), despite the decline in the cost of manufacture of conductors and the reduced annual operating costs (9 % and 17 % respectively of cable lines of voltage of up to 35 kV and 110 kV), occurred to be more than the reduced costs of the construction and operation of cable lines with paper insulation. Currently the cost of one meter of cable with XLPE insulation is less than the cost of cables of AAB, CASB, AASv types of a voltage of 10 kV with aluminium cores, that ensures their undeniable efficacy.
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Oleksyuk, I. V. "Aging of Cross-Linked Polyethylene Insulation Cable Lines." ENERGETIKA. Proceedings of CIS higher education institutions and power engineering associations 64, no. 2 (April 9, 2021): 121–29. http://dx.doi.org/10.21122/1029-7448-2021-64-2-121-129.

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Abstract. Preference is given to cable lines with cross-linked polyethylene insulation in electrical networks with a nominal voltage of 10 kV during reconstruction of existing and construction of new industrial enterprises. The standard service life of such cables is at least 30 years (subject to the conditions of storage, transportation, installation and operation), and the actual one is determined by the technical condition of the cable. The service life of a cable line depends on the state of its insulation, the aging of which occurs under the influence of several factors. Conventionally, all factors influencing one or another degree on the cable insulation resource can be divided into thermal, electromagnetic, climatic, mechanical and operational. The most significant reason for the insulation aging is high temperature, which accelerates the reaction of thermo-oxidative destruction, during which high-molecular polymer compounds decompose. In fact, cables are operated at temperatures below the long-term permissible values, and, therefore, the aging of the insulation is slower, and the actual service life will be longer than the standard. At present, condition of the insulation is monitored with the use of high voltage tests related to destructive testing methods. When designing and operating cable lines, it is necessary to estimate the duration of the actual service life under various operating conditions. In theory, there are several expressions for calculating the service life of a cable line when exposed to temperature, humidity, electric field and aggressive environments, but all of them are not applicable in practice due to the presence of a large number of coefficients whose values are unknown. The paper presents an analytical expression obtained for determining the service life of power electric cables, taking into account the aging of the insulation under the influence of temperature and electric field.
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Czapp, Stanislaw, Seweryn Szultka, and Adam Tomaszewski. "Design of Power Cable Lines Partially Exposed to Direct Solar Radiation—Special Aspects." Energies 13, no. 10 (May 22, 2020): 2650. http://dx.doi.org/10.3390/en13102650.

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Power cable lines are usually buried in the ground. However, in some cases, their ending sections are mounted along the supports of overhead lines. This leads to a situation where the cables are exposed to direct solar radiation and, consequentially, overheat. The paper presents the advanced computer modelling of power cables’ heating, considering their insolation as well as the effect of wind. The temperature and current-carrying capacity of power cables—during exposure to direct solar radiation—are evaluated. An effective method of limiting the unfavourable impact of the sun is discussed. In the presence of solar radiation, the proposed method enables a significant increase in the power cables current-carrying capacity.
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Agüero-Rubio, José, Javier López-Martínez, Marta Gómez-Galán, and Ángel-Jesús Callejón-Ferre. "A Didactic Procedure to Solve the Equation of Steady-Static Response in Suspended Cables." Mathematics 8, no. 9 (September 1, 2020): 1468. http://dx.doi.org/10.3390/math8091468.

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Students in the electrical branch of the short-cycle tertiary education program acquire developmental and design skills for low voltage transmission power lines. Aerial power line design requires mathematical tools not covered well enough in the curricula. Designing suspension cables requires the use of a Taylor series and integral calculation to obtain the parabola’s arc length. Moreover, it requires iterative procedures, such as the Newton–Raphson method, to solve the third-order equation of the steady-static response. The aim of this work is to solve the steady-static response equation for suspended cables using simple calculation tools. For this purpose, the influence of the horizontal component of the cable tension on its curvature was decoupled from the cable’s self-weight, which was responsible for the tension’s vertical component. To this end, we analyzed the laying and operation of the suspended cables by defining three phases (i.e., stressing, lifting, and operation). The phenomena that occurred in each phase were analyzed, as was their manifestation in the cable model. Herein, we developed and validated the solution of the steady-static response equation in suspended cables using simple equations supported with intuitive graphics. The best results of the proposed calculation procedure were obtained in conditions of large temperature variations.
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Tarko, Rafał, Jakub Gajdzica, Wiesław Nowak, and Waldemar Szpyra. "Study of the Lightning Overvoltage Protection Effectiveness of High Voltage Mixed Overhead Cable Power Lines." Energies 14, no. 8 (April 20, 2021): 2329. http://dx.doi.org/10.3390/en14082329.

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In this paper, the effectiveness of lightning overvoltage protection of cables in high voltage overhead cable lines has been analyzed. Because of the high overvoltage level, the cables are protected by surge arresters and by metallic sheath earthing. However, in practice, quite a lot of cases of electricity-evoked damage to the cable outer sheaths are observed, proving that the effectiveness of the protection used is insufficient. As a result, the cables are exposed to environmental factors, especially moisture penetration, which contributes to cable degradation. To explain the causes of this situation, simulation studies were carried out to determine the relevant factors affecting the level of expected overvoltages. The circuit-field model of the overhead cable line in EMTP-ATP, COMSOL and MATLAB software was used for determining overvoltages on the main cable insulation and the outer protective sheath. The studies reveal that the efficiency of the cable insulation overvoltage protection is ensured regardless of the lightning strike location and the crest value of its current. However, the obtained results confirm that no matter the applied protection, the cable outer sheaths may be exposed to overvoltages with higher values than those of the main insulation. Although the analysis was performed for 110 kV lines, the conclusions are general and are also applicable to power lines with higher rated voltages.
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Dissertations / Theses on the topic "Cables lines"

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Bernardin, Sylvie. "Étude et analyse du délestage de glace atmospherique sur les cables /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1989. http://theses.uqac.ca.

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Teo, Yu Xian. "Modelling of interconnects including coaxial cables and multiconductor lines." Thesis, University of Nottingham, 2013. http://eprints.nottingham.ac.uk/13832/.

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In recent years, electromagnetic compatibility (EMC) problems associated with high frequency and high speed interconnects are becoming of increasing concern. Coaxial cables are a popular form of interconnect. In this thesis, the crosstalk coupling between two parallel coaxial cables in free space and above a ground plane is investigated. The degree of coupling is usually formulated analytically in the frequency domain. In this thesis, a method for time domain simulation is proposed using the TLM technique. Results are compared with frequency domain solutions and experimental results. Also; the standard model has been improved by including the skin depth effect in the coaxial cable braid. The crosstalk between the two coaxial cables is observed through the induced voltages on the loads of the adjacent cable, which is deemed to be the usual measureable form of cable coupling. The equivalent circuit developed for the coupling path of two coaxial cables in free space takes account of the differential mode (DM) current travelling in the braids of the cables. As for the coupling path of the cables via a ground plane, the equivalent circuit is developed based on the flow of differential mode (DM) and common mode (CM) currents in the braid, where the coaxial braid’s transfer impedance is modelled using Kley’s model. The radiated electric (E) field from the coaxial cable above a ground plane is also deduced from the predicted cable sheath current distribution and by the Hertzian dipoles’ approach. Results are validated against the radiated electric field of a single copper wire above ground. Both the simulated and experimental results are presented in the time and frequency domains and good agreement is observed thus validating the accuracy of the model.
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Rajasekaran, Vinod. "Power delivery in systems with lossy cables or interconnects." Diss., Available online, Georgia Institute of Technology, 2003:, 2003. http://etd.gatech.edu/theses/available/etd-11252003-095456/unrestricted/rajasekaranvinod200312phd.pdf.

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Thesis (Ph. D.)--Electrical and Computer Engineering, Georgia Institute of Technology, 2004.
Dr. Bonnie S. Heck, Committee Chair; David G. Taylor, Committee Member; Thomas. G. Habetler, Committee Member; Linda M. Wills, Committee Member; Eric Johnson, Committee Member. Includes bibliography.
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Sellers, Sally M. "Caculation of ampacity for underground electrical cables." Thesis, Georgia Institute of Technology, 1994. http://hdl.handle.net/1853/18973.

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Akinnikawe, Ayorinde. "Investigation of broadband over power line channel capacity of shipboard power system cables for ship communications networks." Thesis, [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3155.

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Li, Quan. "AC loss characteristics of monolayer and multilayer superconducting power transmission cables." Thesis, University of Cambridge, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.609500.

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Aslan, Y. "Accurate fault location on overhead distribution lines using superimposed components." Thesis, University of Bath, 1996. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321843.

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Marti, Luis. "Simulation of electromagnetic transients in underground cables with frequency-dependent modal transformation matrics." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/27442.

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This thesis presents a new model to simulate the behaviour of underground cable systems under transient conditions. The new cable model belongs to the class of time-domain, frequency-dependent models, and it is directly compatible with the solution algorithm of the EMTP (Electromagnetic Transients Program). The most important feature of the new model is that it takes into account the frequency dependence of the modal transformation matrices and cable parameters, thus overcoming the main limitation of currently-used transmission line and cable models, which assume that the modal transformation matrices are constant Conceptually, the new model is relatively simple. The system parameters which define the behaviour of an underground cable (namely the modal characteristic admittance matrix, the modal propagation matrix, and the modal transformation matrix), are expressed in closed form by approximating them with rational functions in the frequency domain. Therefore, in the time domain, all numerical convolutions can be expressed recursively. The host transients program (to which the model is interfaced) sees the new model as a constant, real admittance matrix, in parallel with a continuously-updated vector current source. The accurate approximation by rational functions of the modal transformation matrix is possible when its elements are continuous and smooth functions of frequency. Standard eigenvalue/eigenvector algorithms are not well suited for this purpose. Therefore, a new procedure to generate eigenvalues and eigenvectors has been developed. This procedure is based on the Jacobi method, and it produces the desired smooth functions of frequency. This manuscript presents a number of simulations where the performance of the new cable model is compared with exact analytical solutions. These simulations show an excellent agreement between analytical and numerical answers. The effects of not taking into account the frequency dependence of the modal transformation matrices is illustrated with the simulation of a line-to-ground fault on a three-phase cable. The response of the new cable model is also compared with results measured in a field test The new cable model is numerically stable. Its computational speed is comparable to that of frequency-dependent line models with constant transformation matrices. The new cable model is general. Its extension to the simulation of multiple-circuit overhead transmission lines should also be of considerable practical importance.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
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Farmer, Anthony Lee. "Investigation Into Snap Loading of Cables Used in Moored Breakwaters." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/35854.

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A two-dimensional, nonlinear dynamic analysis is conducted on a moored breakwater configuration to investigate snap loads in mooring lines. Breakwaters are structures used to attenuate or eliminate waves and protect shorelines, harbors, and other natural and man-made marine structures from wave damage. The breakwater in this investigation is modeled both as a point mass and as a rigid body. Both models are subjected to free undamped motions and forced undamped wave motion. Energy is dissipated through the use of a coefficient of restitution applied when a mooring line becomes taut (i.e., reaches its natural length). The mooring line is modeled as an inextensible cable with no axial or bending resistance when slack. Snap loading arises when a mooring line transitions suddenly from a slack condition to a taut condition. The analysis was conducted on a breakwater configured upside down and hanging by two mooring lines. The length of the mooring lines, coefficient of restitution, size and shape of the breakwater, initial position of the breakwater, amplitude of wave forcing, ratio of vertical to horizontal forcing, and frequency of forcing were all varied in the analysis. The results show that the rotations of the rigid body and the wave forcing have a significant role in the analysis, indicating that a rigid-body model for a moored breakwater under wave forcing is the more accurate model.
Master of Science
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Yin, Yanan. "Calculation of frequency-dependent parameters of underground power cables with finite element method." Thesis, University of British Columbia, 1990. http://hdl.handle.net/2429/31119.

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In this thesis, the finite element method (FEM) is applied to the calculation of frequency-dependent series impedances and shunt capacitances of underground power cables. The principal equations describing the quasi-magnetic fields and static electric fields are solved with FEM based on the Galerkin technique. The Js method and the loss-energy method are derived to calculate the impedances of a multiconductor system from its field solution, and the energy method and the surface charge method are derived to calculate the capacitances. With a single-core (SC) coaxial cable, the suitability of quadratic isoparametric elements and high-order simplex elements are studied, and a suitable division scheme is suggested for the auto-mesh program. The conventional FEM with a field truncation boundary is applied to the impedance calculation of buried SC cables. Suitable locations for the field truncation boundary and division schemes in the earth are studied. The results show that rb ≥ 12[symbol omitted] is required to obtain accurate impedances of shallowly buried cables with the conventional FEM. This requires a large solution region in the earth at low frequencies. A new technique based on the perturbation concept is proposed to reduce the solution region in the earth. Comparisons between the results from the conventional FEM and from the proposed technique with a significantly reduced solution region in the earth show good agreement. In the case studies, the FEM is applied to the parameter calculation of multiphase SC cables, PT cables, sector-shaped cables, and stranded conductors. The numerical results are compared with those from analytical formulas.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate
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Books on the topic "Cables lines"

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Z, Mesenzhnik I͡A. Silovye kabelʹnye linii dli͡a pogruzhnykh ėlektrosistem. Moskva: Ėnergoatomizdat, 1987.

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Power cable installation practice. Oxford: Newnes, 1993.

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Pansini, Anthony J. Undergrounding electric lines. 2nd ed. Lilburn, GA: Fairmont Press, 1993.

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Highhouse, John. A guide for telecommunications cable splicing. 2nd ed. Australia: Delmar Cengage Learning, 2009.

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Highhouse, John. A guide for telecommunications cable splicing. 2nd ed. Australia: Delmar Cengage Learning, 2009.

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A guide for telecommunications cable splicing. Albany, N.Y: Delmar Publishers, 1997.

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Highhouse, John. A guide for telecommunications cable splicing. 2nd ed. Australia: Delmar Cengage Learning, 2009.

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Highhouse, John. A guide for telecommunications cable splicing. 2nd ed. Australia: Delmar Cengage Learning, 2009.

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Bernard, Kurtz Edwin. The lineman's and cableman's handbook. 9th ed. New York: McGraw-Hill, 1997.

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1921-, Shoemaker Thomas M., ed. The lineman's and cableman's handbook. 7th ed. New York: McGraw-Hill Book, 1986.

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Book chapters on the topic "Cables lines"

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Pezzini, Paola, and Andreas Sumper. "Cables and Lines." In Electrical Energy Efficiency, 9–19. Chichester, UK: John Wiley & Sons, Ltd, 2012. http://dx.doi.org/10.1002/9781119990048.ch2.

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Wakileh, George J. "Modelling of Transmission Lines / Cables." In Power Systems, 221–74. Berlin, Heidelberg: Springer Berlin Heidelberg, 2001. http://dx.doi.org/10.1007/978-3-662-04343-1_9.

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Lugschitz, Herbert. "Overhead Lines and Underground Cables." In CIGRE Green Books, 1299–318. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-31747-2_19.

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Madden, John M. "Underground cables and overhead lines." In Electrical Safety and the Law, 233–46. Abingdon, Oxon ; New York, NY : Routledge, 2017.: Routledge, 2017. http://dx.doi.org/10.4324/9781315617626-14.

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Anand, M. L. "Transmission Lines, Cables and Waveguides." In Principles of Communication Engineering, 503–18. London: CRC Press, 2021. http://dx.doi.org/10.1201/9781003222279-24.

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Hart, Bryan. "Characteristics of ideal transmission lines/cables." In Digital Signal Transmission, 5–22. Boston, MA: Springer US, 1988. http://dx.doi.org/10.1007/978-1-4615-9707-0_2.

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Wright, A., and C. Christopoulos. "Distance-type protective schemes for overhead lines and cables." In Electrical Power System Protection, 385–437. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-3072-5_11.

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Christopoulos, C., and A. Wright. "Distance-type protective schemes for overhead lines and cables." In Electrical Power System Protection, 385–438. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4757-5065-2_11.

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Wright, A., and C. Christopoulos. "The protection of overhead lines and cables by current-differential schemes." In Electrical Power System Protection, 307–44. Boston, MA: Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-3072-5_9.

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Christopoulos, C., and A. Wright. "The protection of overhead lines and cables by current-differential schemes." In Electrical Power System Protection, 307–44. Boston, MA: Springer US, 1999. http://dx.doi.org/10.1007/978-1-4757-5065-2_9.

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Conference papers on the topic "Cables lines"

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Lauria, Stefano, Fabio M. Gatta, and Luigi Colla. "Shunt compensation of EHV Cables and Mixed Overhead-Cable Lines." In 2007 IEEE Power Tech. IEEE, 2007. http://dx.doi.org/10.1109/pct.2007.4538511.

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Abdelhady, Mohamed, and David H. Wood. "The Flow Dynamics of Stranded Cables." In ASME 2020 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/imece2020-23141.

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Abstract Only a few studies of the flow dynamics of stranded cables have been made despite their wide applications. This paper studies in detail the wake flow dynamics of two stranded cables using Particle Image Velocimetry at Reynolds number of 1,500. First and second order statistics were obtained for both cables. Besides, Proper Orthogonal Decomposition of the velocity and vorticity fields was used to determine the effect of the strands on the coherent structures. Results showed that wake flow dynamics are significantly affected by cable strands, specially as the ratio of cable overall diameter to strand diameter increases. Finally, this study provides detailed stranded cables wake flow dynamics. Such understanding could be used in optimizing cable design for different applications, to allow, for example, overhead transmission lines to passively increase their current carrying capacity.
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Gatta, F. M., and S. Lauria. "Very long EHV cables and mixed overhead-cable lines. Steady-state operation." In 2005 IEEE Russia Power Tech. IEEE, 2005. http://dx.doi.org/10.1109/ptc.2005.4524476.

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Shugai, Galina, and P. A. Yakubenko. "Thermo-Physical Processes During the Production of XLPE Insulated Cables." In ASME 2003 International Mechanical Engineering Congress and Exposition. ASMEDC, 2003. http://dx.doi.org/10.1115/imece2003-55521.

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The cable manufacturing process involves several stages of mechanical and thermal treatments. Proper apriori estimation and modeling of the treatments outcome can provide a significant cost reduction in both the optimization of the existing installations and design of new manufacturing lines. Synthetic materials such as cross-linked polyethylene (XLPE) are most commonly used for insulation of high voltage cables. After the insulating material is extruded onto the conductor, the cable enters the curing tube with elevated temperatures, where added initiator (usually peroxide) decomposes and induces the cross-linking of polymer. In order to avoid the distortion of the insulation, the cable passes through the cooling zone before being wound on the take-up reel. In the present paper, a model of a vertical line for the thermal treatment of high voltage cables after the extrusion has been developed. The model accounts for various thermo-physical processes that occur in both the curing tube and the subsequent cooling zone. In particular, chemical processes such as the cross-linking and crystallization are incorporated.
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Luo, Albert C. J., and Bo Yu. "Galloping Vibration of Nonlinear Cables Through a Two Degree-of-Freedom Oscillator." In ASME 2016 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2016. http://dx.doi.org/10.1115/imece2016-66173.

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In this paper, galloping vibrations of a lightly iced transmission line are investigated through a two-degree-of-freedom (2-DOF) nonlinear oscillator. The 2-DOF nonlinear oscillator is used to describe the transverse and torsional motions of the galloping cables. The analytical solutions of periodic motions of galloping cables are presented through generalized harmonic balanced method. The analytical solutions of periodic motions for the galloping cable are compared with the numerical solutions, and the corresponding stability and bifurcation of periodic motions are analyzed by the eigenvalues analysis. To demonstrate the accuracy of the analytical solutions of periodic motions, the harmonic amplitudes are presented. This investigation will help one better understand galloping mechanism of iced transmission lines.
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Abrahamsson, Lars, Daniel Serrano Jimenez, John Laury, and Math Bollen. "AC Cables Strengthening Railway Low Frequency AC Power Supply Systems." In 2017 Joint Rail Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/jrc2017-2258.

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In present-day railway power supply systems using an AC frequency lower than the one in the public power system of 50/60 Hz, high voltage overhead transmission lines are used as one measure of strengthening the railway power supply system grids. This option may be economically beneficial, compared to strengthening the grid purely by increasing the density of converter stations or increasing the cross section areas of the overhead catenary wires. High voltage AC transmission lines in the railway power supply system allow larger distances between converter stations than would otherwise be possible for a given amount of train traffic. Moreover, the introduction of AC transmission lines implies reduced line losses and reduced voltage level fluctuations at the catenary for a given amount of train traffic. However, due to the increased public and government resistance for additional overhead high voltage AC transmission lines in general, different alternatives will be needed for the future improvements and strengthening of railway power systems. For a more sustainable transport sector, the share and amount of railway traffic needs to increase, in which case such a strengthening becomes inevitable. Earlier, usage of VSC-HVDC transmission cables has been proposed as one alternative to overhead AC transmission lines. One of the main benefits with VSC-HVDC transmission is that control of power flows in the railway power systems is easier and that less converter capacity may be needed. Technically, VSC-HVDC transmission for railway power systems is a competitive solution as it offers a large variety of control options. However, there might be other more economical alternatives reducing the overall impedance in the railway power system. In public power systems with the frequency of 50/60 Hz, an excess of reactive power production in lowly utilized cables imposes an obstacle in replacing overhead transmission lines with cables. In low frequency AC railway power system, the capacitive properties are less significant allowing longer cables compared to 50/60 Hz power systems. Moreover, in converter-fed railways, some kind of reactive compensation will automatically be applied during low-load. At each converter station, voltage control is already present following the railway operation tradition. Therefore, in this paper, we propose AC cables as a measure of strengthening low-frequency AC railway power systems. The paper compares the electrical performances of two alternative reinforcement cable solutions with the base case of no reinforcement. The options of disconnecting or toggling the cables at low load as well as the automatic reactive compensation by converter voltage control are considered. Losses and voltage levels are compared for the different solutions. Investment costs and other relevant issues are discussed.
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Zhang, Su-xia, You-gang Tang, and Xi-jun Liu. "Analysis of Nonlinear Dynamic Response of Mooring Lines in Deepwater." In ASME 2010 29th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2010. http://dx.doi.org/10.1115/omae2010-20775.

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Nonlinear motion equations of cable is reduced with the assuming of linear constitutive relation, and simplified further according to propagation characters of stress wave. The loading acting on quasi-static cables are analyzed and the detailed expressions are given. The displacement, stress and strain in mooring line in deep water are calculated in this paper, and the nonlinear propagation characters of stress and strain, the motion characters and the effect of drag force reduced by fluid on the dynamic tension in cable are analyzed respectively. The results show that, the stress in cable propagating from exciting end to fixed end and there is a difference in phase. At the same time, the stain in cable different point is also different. At the point with maximum tension, the normal motion is double-period and the tangential motion is quasi-periodic. The tension in cable is effected by tangential and normal drag.
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Velasquez, Ricardo Arias, and Jennifer Mejia. "Structures in Power lines and ice overload on cables." In 2020 IEEE PES Transmission & Distribution Conference and Exhibition - Latin America (T&D LA). IEEE, 2020. http://dx.doi.org/10.1109/tdla47668.2020.9326194.

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Jalali, Mohammad Hadi, Richard McKercher, and Geoff Rideout. "Three Dimensional Dynamic Model Development and Validation for Stranded Cables." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11504.

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Abstract Interactions between cables and structures affect the design and non-destructive testing of electricity transmission lines, guyed towers, and bridges. In order to understand the effect of conductors on dynamics of utility poles, a three dimensional dynamic model for stranded cables is presented based on the bond graph formalism and validated through experimentation. The cable is modeled considering the bending stiffness, tension and sag due to self-weight. The model consists of three-dimensional rigid segments, connected with translational and rotational springs and dampers. To validate the model, an instrumented set up for a stranded cable was tested in the laboratory and the model was validated in both the in-plane and out-of-plane directions in the frequency domain by measuring the cable response to hammer impacts in both directions. Time domain response obtained from simulation was also validated with experimental time response by performing a free vibration test. A set up was designed and built to accurately measure the bending stiffness of a stranded cable in different tensions and the measured values for bending stiffness were used in the numerical model. It was observed that the bending stiffness increased with the increase in tension. The modal properties of the cable were obtained numerically and experimentally for different tensions and consequently for different amounts of sag. The model is verified to have sufficient fidelity to predict the dynamics of cables undergoing both in-plane and out-of-plane motion, and can be used in a pole-cable system model to investigate the effect of cable on dynamics on poles or structures.
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Wang, Kui, Zhen Xu, Biling Zhang, and Yunpeng Wang. "A game-theoretic application for EHV cables and overhead lines." In 2017 IEEE Conference on Energy Internet and Energy System Integration (EI2). IEEE, 2017. http://dx.doi.org/10.1109/ei2.2017.8245446.

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Reports on the topic "Cables lines"

1

Wireless cable TV service installer electrocuted by overhead power line. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, January 1997. http://dx.doi.org/10.26616/nioshsface96mo059.

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Three fiber optic cable installers killed by contact with power line. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, October 1998. http://dx.doi.org/10.26616/nioshsface98ne025.

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Construction worker electrocuted when crane cable contacts an overhead power line. U.S. Department of Health and Human Services, Public Health Service, Centers for Disease Control and Prevention, National Institute for Occupational Safety and Health, December 1992. http://dx.doi.org/10.26616/nioshsface92nj029.

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Evaluation of wet-line depth-correction methods for cable-suspended current meters. US Geological Survey, 1986. http://dx.doi.org/10.3133/wri854329.

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