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The ionic conduction of multiply charged ions, rather than singly charged ions, is beneficial for energy storage and sensor applications. The low mobility of multiply charged ions is one important obstacle to the implementation of these applications. Chemical methods, such as doping and solid solution formation, have been used to improve ionic conductivity. However, the apparent performance of ceramic...
The increasing demand for electrical energy and the difficulties involved in installing new transmission lines presents a global challenge. Transmission line cables need to conduct more current, which creates the problem of excessive cable sag and limits the distance between towers. Therefore, it is necessary to develop new cables that have low thermal expansion coefficients, low densities, and high...
Ice accretion on high voltage power lines is a severe problem for power network and it can cause insulator flashover, wire breakage and tower falling down. In the present work, different hydrophobic surfaces were deposited on aluminum conductor and the ice accretion process on these hydrophobic aluminum surfaces were studied in an artificial climatic chamber. The superhydrophobic aluminum surface...
Ice and snow accretion on transmission lines is a severe problem for power network and it can cause insulator flashover, wire breakage and tower falling down et al. Solutions are needed to reduce or eliminate ice accumulation on transmissions lines. In the paper, an excellent superhydrophobic surface was prepared on aluminum conductor by constructing a micronanoscale roughness on the surface and then...
Recent interests concerning nanocomposites are shifting emphasis from fundamental research to application-oriented research. In this study, nano- and micro-filler mixed composites were made and evaluated toward practical use of nanocomposite insulating materials. Some kinds of the nano-filler/micro-filler combinations such as nano-layered silicate/micro-silica, nano-silica/micro-silica and nano-titania/micro-silica...
A primary concern in recent nanocomposite research is practical application. In this study, various kinds of epoxy-based nanocomposites were made and their properties evaluated to determine their applicability as insulating materials for heavy electric apparatuses. Experimental results demonstrated that nano-fillers enhance insulation breakdown properties in nanocomposites. Moreover, nano- and micro-filler...
The conduction of the electric power to the Zulia State is carried out through the 400 kV Tablazo-Cuatricentenario lines, with aluminum conductor. To know the corrosion problems, 17 tests' stations were placed and the atmosphere (ISO 9223-9225 Norms) was categorized. Corrosion products were evaluated in witness conductors; through the stereoscopic microscope and scanning electronic microscope and...
The Explosively-Formed Fuse (EFF) is a high-power opening switch that uses an explosive charge to interrupt current flow in an aluminum conductor [1]. As such we expected the foil's resistance to increase with increasing current density by Joule heating. Yet an analysis of a large number of experiments clearly showed the opposite was true; there was a strong negative correlation between the peak resistance...
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