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With the purpose of improving the efficiency of anaerobic digestion for waste activated sludge, μs-Pulsed electric field (μs-PEF) has been employed for pretreatment on waste activated sludge and its features of low energy consumption and high efficiency make it a promising method for industry application. In this work, DC corona has been used to assist the μs-PEF treatment on the sludge and the treatment...
Cross-linked polyethylene (XLPE) has been widely used as insulating material in power cable. Electrical tree formed within the XLPE has been considered as an important reason for the accelerated ageing and early breakdown of the insulation. From the viewpoint of safety, it is very necessary to gain a firm understanding of the nature of electrical treeing phenomena. In this paper, XLPE has been employed...
In this work, epoxy based nanocomposites was prepared to investigate the effect of relative humidity on surface dielectric breakdown under repeated pulses. Two kinds of inorganic nano particles, i.e. silica and alumina, were used as fillers. The experiment was carried out at room temperature with relative humidity varied from 50% to 90%. A pair of needle-plate electrodes that was tightly pressed on...
In this paper, room temperature vulcanized (RTV) silicone rubber (SiR) was employed as test sample to investigate the tree aging phenomena and mechanism of silicone rubber under commercial voltage. The structures and growth characteristics of electrical tree in SiR were observed by using a digital camera. A new parameter, the treeing proportion is introduced to describe the electrical tree propagation...
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