Power cable and connector nondestructive detecting system and method based on X-ray and ultrasonic combined detection

Abstract

The invention discloses a power cable and connector nondestructive detecting system and method based on X-ray and ultrasonic combined detection. The system comprises an ultrasonic detection subsystem,an X-ray detection subsystem and a diagnosis system, wherein the ultrasonic detection subsystem detects casings of a power cable and a connector through an ultrasonic probe, accomplishes the ultrasonic detection of the outer ring parts of the power cable and connector, and determines a shooting angle, shooting position and shooting distance of the X-ray detection subsystem during detection; the X-ray detection subsystem respectively accomplishes X-ray detection of the outer ring parts and the inner ring parts of the cable and connector at twice according to set parameters provided by the ultrasonic subsystem; the diagnosis system performs combined analysis on the state of the cable and connector according to two detection results output by the ultrasonic detection subsystem and the X-raydetection subsystem. The system takes ultrasonic detection and X-ray detection combined diagnosis as a tool, obtains more accurate detection results of the internal state of the cable and connector, effectively reduces failures and accidents caused by internal defects of the cable and connector, and guarantees the safe and reliable operation of the cable and connector.

Description

Technical field: [0001] The invention relates to the technical field of non-destructive testing of power transmission and transformation equipment, in particular to a system and method for non-destructive testing of power cables and joints based on X-ray and ultrasonic combined testing. Background technique: [0002] With the continuous improvement of the degree of urban power grid cable, the requirements for the reliability of cable power supply are also continuously improved. It is very important to accurately grasp the internal state of the cable, formulate correct maintenance countermeasures, and avoid sudden accidents caused by cable quality problems. Cables and joints are affected by technology, working conditions, materials, etc., and are prone to failure: if the fault occurs between the substation and the overhead transmission line, it will cause tripping and reclosing failure; if the cable and joints in the cable channel fail, it is easy to cause a fire , The envir...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method that can obtain more accurate detection results for the internal state of cables and connectors, and effectively reduce the internal defects of cables and connectors for the problems of internal structural defects of cables and connectors that are difficult to find by manual inspection. Power cable and joint non-destructive testing system and method based on X-ray and ultrasonic joint detection to ensure safe and reliable operation of cables and joints

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