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Loss compensation of transformer models for the power system simulatorGuzman, Nelson Jose. January 1984 (has links)
No description available.
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Loss compensation of transformer models for the power system simulatorGuzman, Nelson Jose. January 1984 (has links)
No description available.
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An efficient algorithm using Householder's formulas for the solution of faulted power systemsAltamirano Chavez, Armando January 2010 (has links)
Digitized by Kansas Correctional Industries / Department: Electrical Engineering.
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Analysis of loss mechanisms in superconducting windings for rotating electric generatorsMinervini, Joseph Vito January 1981 (has links)
Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1981. / MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING. / Vita. / Includes bibliographical references. / by Joseph Vito Minervini. / Ph.D.
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Degradation analysis of metal oxide varistors under harmonic distortion conditionsBokoro, Pitshou Ntambu 11 October 2016 (has links)
A thesis submitted in ful lment of the requirements
for the degree Doctor of Philosophy
in Electrical Engineering
May 2016 / Modern electrical networks provide an opportunity for inevitable interaction between
metal oxide arresters and power system harmonics. Therefore, these arrester devices
are continuously exposed to the combined e ect of distorted system voltage and envi-
ronmental thermal stresses. Recent studies supported by eld experiments have shown
signi cant rise in the leakage current through these surge arrester devices when exposed
to ac voltage with harmonics. However, the major shortcoming in the current knowledge
and applications of varistor arresters resides on the reliability and the electrical stabil-
ity of these overvoltage protection units, when subjected to long-term and continuous
distorted ac voltage and thermal stresses from the environment.
Commercially-sourced ZnO arresters of similar size and electrical properties are tested
using standard ac accelerated degradation procedure or electro-thermal ageing test. The times
to degradation, the coe cient of non-linearity, the reference voltages, as well as the
clamping voltage measured are used to analyse the reliability and the electrical stability
of the metal oxide-based arrester samples. The resistive component of the leakage current
is extracted from the measured total leakage current. The three-parameter Weibull
probability model is invoked in order to analyze the degradation phenomenon. / MT2016
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An investigation into the quality of supply voltage dip-proofingLange, Lyle George January 1998 (has links)
A dissertation submitted in partial fulfillment of the Master's Diploma in Technology: Electrical Engineering (Heavy Current), M.L. Sultan Technikon, 1998. / With the ever increasing electrical demand on an electrical system, the quality of the supply will be tested more and more. And it is with this deteriorating quality that the topic of voltage dips and depressions has become a contentious issue amounts the industrial sector and supply authorities, hence the means to combat this issue in recent years. / M
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