Composite insulator rod core ageing evaluation method

Abstract

The invention relates to a composite insulator rod core ageing evaluation method especially suitable for 110KV-voltage-class insulators. The composite insulator rod core ageing evaluation method is characterized in that infrared spectroscopic analysis is conducted on a composite insulator rod core to extract the height of the main absorbing peak of a composite insulator, a support vector machine is utilized to evaluate the ageing degree of the composite insulator rod core; for the infrared spectroscopic analysis, the composite insulator rod core needs to be made into a test sample having the thickness of 1.5 mm, the main absorbing peak contains a hydroxy group (-OH), an alkyl group (-CH3) and a carbanyl group (-C=O), the establishment of the support vector machine needs an evaluation modelfor a fixed model of composite insulator rod cores, and then model parameters are utilized to evaluate the composite insulator rod cores of the model. The composite insulator rod core ageing evaluation method can conduct classification and state assessment on composite insulators in different ageing states and guide operating maintenance workers to maintain the composite insulators.

Description

technical field [0001] The invention relates to a composite insulator rod core aging evaluation method which is especially suitable for 110KV voltage level insulators. Background technique [0002] Composite insulators are one of the key equipment for the operation of power systems, and they are used for supporting protection and electrical insulation. Composite insulator rod core is mainly composed of epoxy resin, which belongs to a kind of thermosetting polymer oligomer organic matter, which has the characteristics of good mechanical properties, stable size, good electrical properties and stable chemical properties. However, since the composite insulator itself operates in a natural environment and is subjected to long-term temperature changes, ultraviolet rays, rain and snow, etc., aging linearity will inevitably occur. The aging of the composite insulator rod core will reduce its mechanical properties and cause brittle fracture accidents, which will pose a serious threa...

AI Technical Summary

Problems solved by technology

This method can characterize the aging degree of the composite insulator core to a certain extent, but the equipment used is relatively complex, and the data is random, so the evaluation accuracy needs to be improved, and it is not sensitive to the early aging degree of the composite insulator core