SELECTION METHOD FOR STRONG WIND REGION COMPOSITE INSULATOR BASED ON STRUCTURE PARAMETERS, AND COMPOSITE INSULATOR

摘要

A selection method for a strong wind region composite insulator based on structure parameters, and a composite insulator are disclosed. When a selection is made among a plurality of composite insulators according to the selection method, structure parameters of the composite insulators are measured first, and then the selection is made according to certain ranges of the parameters, a selected composite insulator is tested, and it is found that it may withstand strong wind climate environments where the highest wind speed reaches 50 m/s. The composite insulator is a composite insulator having corresponding structure parameters. The selection method is easy to operate and implement. When the composite insulator is applied to a strong wind region where the highest wind speed reaches 50 m/s, the problem of violent oscillation of umbrella skirts or tear of the umbrella skirts does not occur, and the composite insulator may still operate reliably.

主权项

1. A selection method for a strong wind region composite insulator based on structure parameters, comprising the following steps: 1) measuring structure parameters of a composite insulator to be selected; when the composite insulator is in an asymmetric umbrella shape, the structure parameters comprising an umbrella skirt diameter, an umbrella skirt edge thickness, an umbrella skirt root thickness, an adjacent umbrella spacing, an upper umbrella root chamfer radius, a lower umbrella root chamfer radius and an umbrella skirt diameter difference of adjacent umbrella skirts; when the composite insulator is in a symmetric umbrella shape, the structure parameters comprising an umbrella skirt diameter, an umbrella skirt edge thickness, an upper umbrella inclination angle, a sheath diameter, an adjacent umbrella spacing, a root chamfer radius and an umbrella skirt diameter difference of adjacent umbrella skirts; and 2) selecting a composite insulator in an asymmetric umbrella shape and/or a composite insulator in a symmetric umbrella shape according to the structure parameters shown in the following tables:Composite insulatorin an asymmetricumbrella shapeUmbrella skirt diameter D150 mm ≦ D ≦ 185 mmUmbrella skirt edge thickness L13.8 mm ≦ L1 ≦ 6 mmUmbrella skirt root thickness L213 mm ≦ L2 ≦ 16 mmUpperWhen an adjacent umbrella spacing10 mm ≦ R1 ≦ 12 mmumbrellais less than 40 mmrootWhen an adjacent umbrella spacing10 mm ≦ R1 ≦ 14 mmchamferis between 40 mm and 50 mmradiusWhen an adjacent umbrella spacing12 mm ≦ R1 ≦ 16 mmR1is greater than 50 mmLowerWhen an adjacent umbrella spacingR2 = 12 mmumbrellais less than 40 mmrootWhen an adjacent umbrella spacing12 mm ≦ R2 ≦ 14 mmchamferis between 40 mm and 50 mmradiusWhen an adjacent umbrella spacing14 mm ≦ R2 ≦ 16 mmR2is greater than 50 mmUmbrella skirt diameter difference ΔD of0 ≦ ΔD ≦ 40 mmadjacent umbrella skirts andComposite insulatorin a symmetricumbrella shapeUmbrella skirt diameter D150 mm ≦ D ≦ 205 mmUmbrella skirt edge thickness L13.8 mm ≦ L1 ≦ 6 mmUpper umbrella inclination angle β3.5° ≦ β ≦ 8°Sheath diameter D1L1 + (D − D1) × tanβ ≧13 mmUmbrellaWhen an adjacent umbrella spacing10 mm ≦ R ≦ 12 mmrootis less than 40 mmchamferWhen an adjacent umbrella spacing10 mm ≦ R ≦ 14 mmradius Ris between 40 mm and 50 mmWhen an adjacent umbrella spacing12 mm ≦ R ≦ 16 mmis greater than 50 mmUmbrella skirt diameter difference ΔD of0 ≦ ΔD ≦ 40 mmadjacent umbrella skirts