Intelligent automatic ultrasonic detection system and method for in-service basin-type insulators

Abstract

The invention discloses an intelligent automatic ultrasonic detection system and method for in-service basin-type insulators. The detection system comprises a detection process library, a self-adaptive data acquisition module and an intelligent data analysis module; the detection process library comprises an insulator component with a typical structure and a common detection process, provides process parameters required to be set for the self-adaptive data acquisition module, and provides geometric structure parameters of the insulators for the intelligent data analysis module; the self-adaptive data acquisition module provides detection data for the intelligent data analysis module; the intelligent data analysis module realizes automatic positioning of defects according to the corresponding relation between the detection geometric structure parameters and the detection data; and the intelligent automatic ultrasonic detection system is used for detecting the internal defects of the in-service basin-type insulators. The invention realizes the accurate and rapid detection and positioning of the defects of air holes, cracks and the like in the basin-type insulators.

Description

technical field [0001] The invention belongs to the technical field of online safety monitoring of electrical insulation equipment, in particular to an intelligent automatic ultrasonic detection system and method for internal defects of in-service pot insulators. Background technique [0002] Basin insulator is an important part of substation gas-insulated metal-enclosed switchgear (GIS), which plays an important role in isolating adjacent gas chambers, supporting conductors and insulating, and is the basis for ensuring safe and reliable operation of the power grid. Due to the existence of internal defects of insulators and irregular on-site installation and fastening operations, accidents of insulator ruptures and GIS air leakage occur frequently, which greatly affects the safe and stable operation of power grid equipment. [0003] At present, there are two main types of detection of internal defects of pot insulators: ex-factory inspection and in-service inspection. The f...

AI Technical Summary

Problems solved by technology

[0004] Ultrasonic testing technology is an important means of detecting internal defects in solid materials, but for pot insulators, there are several difficulties: (1) There are metal inserts, vent holes and other structures inside pot insulators, and these structures will interfere with the transmission of ultrasonic signals Reflections and structural interference signals appear, which affect defect discrimination; (2) There are various types of pot insulators, and the internal structure and outer diameter are all changing. Manual analysis alone has problems such as low efficiency, inaccurate positioning, and missed judgments. On-site detection requires fast, accurate and reliable evaluation methods; (3) The material of the pot insulator is generally a composite material system composed of epoxy resin and aluminum oxide particles, which has a large attenuation of ultrasonic waves. When the diameter is large, the ultrasonic wave must have sufficient energy

Images