The composite post insulator composed of a large diameter mandrel and flange pressed by one-time integral pultrusion has high strength good toughness is widely used in the existing flexible converter valve. For constructing finite element model crimped insulator, most surface are directly connected, making simulation model’s stiffness deviate from actual distortion. Based on this, this study pr...

Zero insulators directly reduce the electrical performance of insulator strings, affecting safe and reliable operation transmission lines. The grounding current string contains characteristic information performance. Extracting can realize detection zero value insulator, which is great significance to ensure In this paper, composite used on ultra-high-voltage (UHV) lines studied analyze influen...

Composite systems constitute a large class of naturally occurring or artificially synthesized disordered systems [1]. The systems are microscopically inhomogeneous and disordered but look homogeneous on the macroscopic scale. From the tunnelling electron micrographs (TEM) of such a composite material it can be seen that the typical dimension (ξ) of metallic islands embedded in the insulating ma...

Light focusing characteristics of a negative refractive lens fabricated out of a silicon-on-insulator photonic crystal (PC) slab are investigated theoretically and experimentally. It focuses in the near infrared, but the focal spot is degraded by a lens aberration. To reduce the aberration, we designed a composite PC that gives rise to a narrower focal spot. In addition, two unique functions of...