A method and device for evaluating the interface performance of a composite insulator mandrel sheath

Abstract

The invention discloses a method and a device for evaluating interface performance of a composite insulator core rod sheath. The composite insulator core rod sheath interface performance evaluation method is convenient to use, only the original picture containing the composite insulator core rod is taken to perform image processing, the defect rate of the interface image can be obtained as an evaluation index of the interface performance of the composite insulator core rod sheath, there is no need to rely on complex device devices and step processes like a water diffusion test or a cohesive force test, meanwhile, since the image defect rate is calculated by image recognition, the evaluation index avoids subjective factors, and because the image defect rate is a continuous evaluation indexrather than a graded evaluation index, the evaluation result has high evaluation result and solves the technical problem that the equipment and the operation process required by the current compositeinsulator interface performance evaluation method are complex, the subjectivity is high during manual evaluation, the evaluation index is discrete, and the evaluation result is low in sensitivity.

Description

Technical field [0001] The invention relates to the field of power equipment, in particular to a method and device for evaluating the interface performance of a composite insulator core rod sheath. Background technique [0002] Composite insulators have been widely used in power grids, and the quality of composite insulators is closely related to power grid security. The main body of the composite insulator is composed of a core rod and an umbrella skirt sheath, the core rod bears the mechanical load, and the umbrella skirt sheath ensures that the insulator has good external insulation performance. [0003] The bonding interface between the core rod and the sheath penetrates through the two ends of the composite insulator and is the largest macroscopic interface inside the composite insulator. Due to the large difference in the properties of the core rod and the sheath, the core rod-sheath interface becomes the inner composite insulator Weak areas of insulation. The degradation o...

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Problems solved by technology

[0006] The invention provides a composite insulator mandrel sheath interface performance evaluation method and device, which solves the need for complex equipment and operation process required by the current composite insulator interface performance evaluation method, and the manual evaluation is highly subjective, the evaluation indicators are discrete, and the evaluation Resulting technical issues with low sensitivity

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