Applied Chemistry
Ebadollah Amouzad Mahdiraji
Abstract
High and low voltage cables are among the most frequently utilized pieces of equipment in the power system and are subject to a variety of problems for a number of different causes. In spite of their increased reliability in airways, cables, whether power or distribution cables, are typically transported ...
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High and low voltage cables are among the most frequently utilized pieces of equipment in the power system and are subject to a variety of problems for a number of different causes. In spite of their increased reliability in airways, cables, whether power or distribution cables, are typically transported underground. As a result, they are more difficult to repair and may even need to be replaced in the event of a fault; for this reason, it is crucial to locate the fault as soon as possible. As is obvious from the research's title, the Fourier transform and modal transform methods are employed in this work to determine the kind and position of faults. This allows us to assess how effective the chosen method is at identifying and finding faults in subsurface infrastructure. The Fourier transform method, followed by the Modal transform, is anticipated to have a significant advantage in this study in terms of speed and accuracy when identifying the kind and location of defects. The nature and position of the defect are identified in the meanwhile using the detection and location indicators, which, according to simulations, will operate effectively. To show that these methods are accurate, the sample model is simulated. The exact and quick performance of the suggested strategy is confirmed by the simulation results from the MATLAB and EMTP/ATP software.
Applied Chemistry
Frank Invercor
Abstract
Percolation is a process similar to sintering with a liquid phase, except that here the solid phase is first formed in a porous molded body, and the solid metal phase is formed from the outside during sintering and is allowed to permeate the porous system. Additional shrinkage can be prevented by liquid ...
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Percolation is a process similar to sintering with a liquid phase, except that here the solid phase is first formed in a porous molded body, and the solid metal phase is formed from the outside during sintering and is allowed to permeate the porous system. Additional shrinkage can be prevented by liquid phase sintering, which results in dimensional stability of the product except for one percent growth, which is due to a thin surface layer of liquid metal formed on the part. This method is used for systems that have two or more components and their melting temperatures are very different. Excluding the hot compaction method, percolation is the only powder processing method that can produce a perfect density close to the lattice shape. All other densification processes require the material to shrink and thus destroy the correct shape and dimensions. With machining, pressure densification or powder injection into the mold, seletonization is formed earlier than percolation, complexity in the design of parts such as cuts, internal angles and multiple surfaces that can be released to size in high density parts. which are produced by extrusion or hot pressing are not possible. Another unique feature of percolation is that under suitable conditions for segment angles and limited solubility between low-melt and high-melt phase systems, fully entangled continuous networks can be obtained. This is an important issue for manufacturing products that must have a combination of high thermal and electrical conductivity with an acceptable level of strength and resistance to erosion.
Applied Chemistry
Ebadollah Amouzad Mahdiraji
Abstract
The conductor goes to the corona and increases the leakage and charging current surrounding the conductor when the conductor voltage at the transmission line rises from a particular threshold known as the corona threshold voltage. This study evaluates various corona effects on transmitted pulses on transmission ...
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The conductor goes to the corona and increases the leakage and charging current surrounding the conductor when the conductor voltage at the transmission line rises from a particular threshold known as the corona threshold voltage. This study evaluates various corona effects on transmitted pulses on transmission lines as well as the equations for the transmission line when corona is present. This work attempts to offer an accurate assessment by evaluating the emission of lightning pulses along the transmission line in the form of numerical analysis on the radius induced by charging. The impact of transmission line equations and the impact of the desired magnetic field is thus one of the major issues discussed in this study.
