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Sulfur hexafluoride (SF6), the electric power industry's presently preferred gaseous dielectric (besides air), has been shown to be a greenhouse gas. Concerns over its possible impact on the environment have rekindled interest in finding replacement gases. This paper studies the possibility of c-C4F8/N2 substituting SF6 as insulation mediums. The SST experimental apparatus is designed in this paper,...
Because 1000kV UHV substations cover enormous area, it is hoped that lightning rods be installed on the frames of main transformers to reduce installation of excessive independent lighting rods, and thus to reduce substation area and cost. Referring to years of operating experience of many 110–500kV substations, lightning rods might be installed on the frames of main transformers to shield direct...
The EHVDC transmission systems have the advantages of long-distance and high-capacity power transmission capability, in order to better play the advantages of the EHVDC transmission systems mentioned above, State Grid Corporation of China (SGCC) had proposed to increase the transmission capacity of ±660kV UHVDC transmission system, and increase the bipolar rated capacity from 4000MW to 4600MW, and...
the UHVDC transmission systems have the advantages of long-distance and high-capacity power transmission capability, in order to better play the advantages of the UHVDC transmission systems mentioned above, State Grid Corporation of China (SGCC) proposed to increase the transmission capacity of ±800kV UHVDC transmission system, and increase the bipolar rated capacity from 7200MW to 7600MW. Based on...
Capacitor setting/switching and network reconfiguration are two important means for optimizing the operating condition of the distribution systems. For both of them are complicated combinatorial algorithms, it is hard to effectively combine these two important means to do better optimization. In this paper, a joint optimization algorithm, based on the combination of capacitor switching and network...
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