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A study of corona loss and electric field distribution in bundle conductors.Jue, Shao-man. January 1971 (has links)
No description available.
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A MATLAB based analysis tool for clearance and thermal violations in transmission power linesMabuza, Ndumiso Simon January 2016 (has links)
A research report submitted to the faculty of Engineering and the Built Environment,
of the University of the Witwatersrand, Johannesburg, in partial fulfilment of the
requirements for the degree of Master of Science in Engineering
Johannesburg 2014 / Clearances are an important aspect of High Voltage (HV) transmission line design,
construction and maintenance. A software tool that combines clearance violation
analysis and optimum loading operating conditions for power lines could save power
utilities the capital cost of refurbishing transmission power lines that marginally
exceed maximum power line clearance distances. This can be achieved by operating
the power lines at an optimum amperage level for any given set of weather
conditions.
This research project proposes a low cost MATLAB® based software tool that detects
clearance violations and determines operational limits on transmission power lines
using prevalent weather conditions as well as the power line amperage. Various
power lines around the states of Missouri and Illinois in the United States of America
are analysed to test the viability and functionality of the software. In order to validate
the accuracy of the program, the results obtained were compared to results from PLSCADD
®.
Key Words: conductor, clearance, sag, software, temperature / MB2016
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Optimization of bundle conductor configuration based upon the maximum surface voltage gradientTorelli, Lido M. A. January 1974 (has links)
No description available.
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The effect of thermal-mechanical processing on the physical and mechanical properties of Al-Fe-Co electrical conductor alloyChia, Enrique Calixto 08 1900 (has links)
No description available.
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Transient temperature distributions in overhead fiber-optic ground wiresWells, M. Glenn 05 1900 (has links)
No description available.
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Online in-situ estimation of network parameters under intermittent excitation conditionsTaylor, Jason Ashley, Halpin, S. Mark, January 2008 (has links)
Dissertation (Ph.D.)--Auburn University, / Abstract. Vita. Includes bibliographic references (p.150-157).
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Optimization of bundle conductor configuration based upon the maximum surface voltage gradientTorelli, Lido M. A. January 1974 (has links)
No description available.
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New aspects of physics in conjugated systemsWong-Kuen-Fat, John Erik January 1998 (has links)
No description available.
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Electromagnetic wave propagation on helical conductorsJanuary 1951 (has links)
Samuel Sensiper. / Based on the author's (Sc. D.) thesis, Dept. of Electrical Engineering, Massachusetts Institute of Technology, 1951.
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Dynamic characteristics of bare conductors.Eshiemogie, Ojo Evans. January 2011 (has links)
The dynamic characteristic of transmission line conductors is very important in designing and
constructing a new line or upgrading an existing one. This concept is an impediment to line
design and construction because it normally determines the tension at which the line is strung
and this in respect affects the tower height and the span length. Investigations into the
phenomenon of mechanical oscillation of power line conductors have been extensively looked
into by many researchers using concepts from mechanics and aerodynamics to try and predict the
conductor dynamic behaviour. Findings have shown that precise prediction of conductor windinduced
vibration is very difficult i.e. non-linearity.
Over the years, various analytical models have been developed by researchers to try and predict
the mechanical vibration of transmission line conductors. The first part of this dissertation
considers the analysis of the model describing the transverse vibration of a conductor as a long,
slender, simply supported beam, isotropic in nature and subjected to a concentrated force. The
solution of this beam equation was used to obtain the conductor natural frequencies and mode
shapes. Conductor self-damping was obtained by the introduction of both external and internal
damping models into the equation of motion for the beam.
Next, also using the same beam concept was the application of the finite element method (FEM)
for the dynamic analysis of transmission line conductors. A finite element formulation was done
to present a weak form of the problem; Galerkin‟s method was then applied to derive the
governing equations for the finite element. Assembly of these finite element equations, the
equation of motion for the transverse vibration of the conductor is obtained. A one dimensional
finite element simulation was done using ABAQUS software to simulate its transverse
displacement. The eigenvalues and natural frequencies for the conductors were calculated at
three different tensions for two different conductors. The damping behaviour of the conductors
was evaluated using the proportional damping (Rayleigh damping) model. The results obtained
were then compared with the results from the analytical model and the comparison showed a
very good agreement.
An electrical equivalent for the conductor was developed based on the concept of mechanicalelectrical
analogy, using the discrete simply supported beam model. The developed electrical
equivalent circuit was then used to formulate the transfer function for the conductor. Matlab
software was used to simulate the free response of the developed transfer function.
Finally, the experimental study was conducted to validate both the analytical model and the
FEM. Tests were done on a single span conductor using two testing methods i.e. free and force
vibration. The test results are valid only for Aeolian vibration. From the test results the
conductor‟s natural frequencies and damping were determined. The experimental results, as
compared with the analytical results were used to validate the finite element simulation results
obtained from the ABAQUS simulation. / Thesis (M.Sc.Eng.)-University of KwaZulu-Natal, Durban, 2011.
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