Method for detecting composite insulator based on multi-spectrum

Abstract

The invention discloses a method for detecting a composite insulator based on multi-spectrum. The method comprises: selecting a detection device; under a same operation condition, performing visible light detection, infrared detection, and UV detection of the same composite insulator by using the detection device to obtain detection images of the composite insulator; performing comparison of a partial discharge lighting spot of the visible light image, a partial hot spot of the infrared image, and an electric corona spot of the UV image; performing comparison of visual light images, infrared images, and UV images of different composite insulators of the same pole tower of the same line under the same operation condition; establishing a multi-spectrum detection database according to each composite insulator; and performing data comparison and finding out existing data difference according to detection data in a certain period. According to the method, visual light detection, infrared detection, and UV detection can be organically combined; advantages are complemented; and electrified detection of the insulator is easy to perform. A defect of the composite insulator can be discovered in time, so that large-area tour-inspection is convenient to develop.

Description

technical field [0001] The invention relates to a detection method, in particular to a composite insulator detection method based on multi-spectrum, and belongs to the technical field of power insulator detection. Background technique [0002] As an important part of transmission lines, insulators play an important role in ensuring the safe operation of power systems. Composite insulators not only have hydrophobic performance, hydrophobic migration performance, small equivalent diameter and good anti-pollution flashover performance, but also have the characteristics of high strength, light weight, unbreakable, convenient transportation, easy operation and maintenance, etc. It is widely used in transmission lines, and new AC and DC projects with a voltage level of 500kV and above have also begun to be used in batches or even on the whole line. Its hanging line operation effect is good, and it has become an effective method for the external insulation of power transmission and...

AI Technical Summary

Problems solved by technology

Existing detection methods for porcelain and glass insulators are limited to detecting the zero (low) value of porcelain glass insulators, and cannot effectively detect and judge problems in composite insulators during operation. Feasible live detection means to detect composite insulator defects in advance, guide the operation and maintenance of composite insulators, and improve the safe and reliable operation level of power systems

Images