Insulator flashover fault localization method and system

Abstract

The invention discloses an insulator flashover fault localization method and system. The method comprises steps of: firstly acquiring an aerial photo of a power transmission line; determining a colorcharacteristic image of a target region according to the aerial photo; determining a structural characteristic image of the target region according to the aerial photo; fusing the color characteristicimage and the structural characteristic image to determine a fused image of the target region; preprocessing the fused image to determine a connected domain; then subjecting the aerial photo to tiltcorrection to determine the tilt correction image of the target region; in the tilt correction image, extracting an image of the insulator region according to the connected domain; determining a flashover region smooth image according to the image of the insulator region; and finally extracting the edge contour of the flashover region smooth image, and drawing in the tilt correction image according to the extracted edge contour to locate a fault and improve the localization accuracy.

Description

technical field [0001] The invention relates to the technical field of image recognition, in particular to an insulator flashover fault location method and system. Background technique [0002] Insulators are important electrical insulation and mechanical support components in transmission lines, and are also fault-prone components. The number of accidents caused by insulator failures has ranked first in the number of transmission line accidents. If the safety hazards of the insulators are not detected in time, it will cause heavy losses and even lead to large-scale power outages. A large number of overhead transmission lines in my country are located in the wilderness, and the line corridors pass through various climate zones. The insulators have to withstand various harsh natural meteorological conditions such as frost, rain, snow, wind and sun, and insulation flashover failures occur from time to time. Therefore, it is of great significance to study the flashover charact...

AI Technical Summary

Problems solved by technology

Sparks or arcs in the flashover channel cause local overheating of the insulating surface, causing carbonization, discoloration, and tracking, and damage the surface insulation

If it is not discovered in time, replacing the damaged insulator will pose a serious threat to the safe operation of the power grid

[0004] In recent years, the analysis of insulator flashover faults at home and abroad is mainly divided into three types. The ultraviolet imaging method can effectively detect the fault defects that cause the discharge of composite insulators; the infrared imaging method can detect heating faults; short-circuit faults, but the above three methods cannot locate damaged parts such as tracking damage, enamel peeling, etc.

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