A method for determining mechanical load parameters of composite insulator aging experiment

By establishing a quantitative mapping chain from actual wind speed to laboratory mechanical load, and using line parameters and fluid mechanics to calculate wind load and gravity load, and combining finite element simulation to determine the bending stress of the composite insulator core rod, the problem of no physical basis for setting load parameters in composite insulator aging experiments was solved, and the correspondence between experimental results and actual working conditions was realized.

CN122242099APending Publication Date: 2026-06-19HUAZHONG UNIV OF SCI & TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HUAZHONG UNIV OF SCI & TECH
Filing Date
2026-02-04
Publication Date
2026-06-19

AI Technical Summary

⚠Technical Problem

In the existing technology, the mechanical load parameters for aging tests of composite insulators lack physical basis and cannot establish a quantitative relationship with actual operating wind speed, resulting in insufficient comparability and extrapolation reliability of experimental results.

⚗Method used

By establishing a quantitative mapping chain from actual operating wind speed to laboratory mechanical load, wind load and gravity load are calculated using line parameters and fluid mechanics. The bending stress of the composite insulator core rod is determined by combining finite element simulation, and then the stress level under specific wind speeds is simulated in the laboratory.

🎯Benefits of technology

It provides a direct and quantitative method for determining experimental load parameters, ensuring that the experimental results are consistent with the actual working conditions, avoiding mechanical damage to the test specimen, and has good versatility and reliability.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention discloses a method for determining mechanical load parameters in aging tests of composite insulators, relating to the field of power equipment testing technology. This invention solves the problem of lacking physical basis for load parameter setting by establishing a complete and quantitative mapping chain from actual operating wind speed to laboratory mechanical load. Based on line parameters and fluid mechanics, wind speed is transformed into specific horizontal wind loads and vertical gravity loads acting on conductors and insulator strings. Furthermore, the wind deflection tangent value, which can intuitively characterize the deformation state of the V-string, is calculated. Finite element simulation is used to transform the wind deflection angle into the maximum bending stress value inside the insulator core rod. An axial mechanical load that produces the same maximum bending stress value is found on a single core rod specimen in the laboratory. This allows the finally determined experimental load parameters to be directly traced back to a specific target wind speed, changing the setting method that relies on empirical proportions and has vague parameter meanings, and providing a solid physical basis for aging tests.
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