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In this paper, in order to fully consider the influence of complex wind field on the windage yaw angle of insulator string, the WRF-Fluent multi-scale calculation model is developed to simulate a windage yaw accident caused by a typhoon transit process in the Ouhai Distrct of Zhejiang, China, the dynamic response of the faulty insulator string in the wind field is analysed through two-way fluid-structure interaction calculation, and the windage yaw condition of the insulator is obtained by transient dynamics simulation. The theoretical windage yaw angle under complex wind field is also calculated according to the design standard. This paper shows that the complex wind field has an nonnegligible influence on windage yaw angle of insulator string, so it is necessary to fully consider the influence of complex wind field on high-voltage insulators in future design standard.

TiB2/ZrO2 multilayers with different modulation ratios (at a fixed modulation period of 50 nm) ranging from 2:1 to 6:1 were deposited by magnetron sputtering. The oxidation behavior of the as-deposited multilayers was investigated at 600 °C in air. The microstructures, mechanical properties, and oxidation resistance of the multilayers were analyzed and compared. The results indicate that discontinuous oxidation retarded the inward diffusion of oxygen and the outward diffusion of metallic components. The formation of dense (Ti, B)-oxide scale and internally inserted ZrO2 layers in the TiB2/ZrO2 multilayers enhanced the oxidation resistance. Moreover, the oxidation resistance of the multilayers increased as modulation ratio decreased. The hardness and elastic modulus of the TiB2/ZrO2 multilayers were maximized (23.9 and 303.1 GPa, respectively) at the modulation ratio of 6:1. After annealing, the formation of thick ZrO2 layers did not lead to sustained increases in hardness. The maximum hardness and elastic modulus were obtained at the critical modulation ratio of 4:1, and good adhesion strength with the substrate was also observed. The oxidation mechanism and experimental results demonstrate that controlling the modulation ratio of multilayers can produce synergetic enhancements in the oxidation resistance and mechanical properties of multilayers after high-temperature oxidation.