Method for detecting on-site three-dimensional imaging of GIS center conductive member

Abstract

The invention discloses a method for detecting the on-site three-dimensional imaging of a GIS center conductive member. The method comprises the following steps: 1, arranging an X-ray source and a detector on both sides of an object to be detected respectively, wherein the X-ray source emits X-rays with the intensity of I0, and the intensity of the X-rays is I after passing through the object to be detected to the detector; 2, carrying out synchronized translation of the X-ray source and the detector by a certain number of step Nt, conducting same measurements on each translation step, and measuring the intensity I0 of the X-rays emitting from the X-ray source and intensity I of the X-rays when the X-rays reach the detector; 3, setting the coefficient of linear attenuation, caused by the object to be detected, of the X-rays as Mu; 4, solving the linear attenuation coefficient Mu of each point of the cross section in a ray projection group to know the distribution of linear attenuation coefficient Mu so as to obtain the three-dimensional image of the cross section; 5, forming the three-dimensional spatial data and images of the object to be detected. A conventional digital radiographic testing equipment is adopted for conducting three-dimensional imaging of a GIS device without power failure and dismantling, and monitoring, controlling and measuring of the on-site condition of the GIS center conductive member are thus achieved.

Description

technical field [0001] The invention relates to the technical field of ultra-high voltage power grids, in particular to an on-site three-dimensional imaging detection method for conductive components in a GIS center. Background technique [0002] The full name of GIS in Chinese is metal-insulated metal-enclosed switch, which is the core component of modern power grid. GIS components are composed of central conductors, operating parts, shells, and basin insulators, and the internal space is filled with sulfur hexafluoride gas insulating gas. The internal center conductor of GIS is used for the conduction of current, and is the main component to realize the function of GIS. It is mainly composed of tubular wires, circuit breakers, and arc extinguishing covers. Substation GIS equipment is composed of shell, supporting insulation and central conductor, and the central conductor is insulated and isolated by insulators and sulfur hexafluoride gas. In the process of manufacturing...

AI Technical Summary

Problems solved by technology

This method first uses ultrasonic waves for partial discharge detection to determine the approximate location of the defect, and then X-rays are transmitted through the defective part of the GIS tank and projected onto the CR film for imaging, finally determining the location and nature of the defect in the GIS equipment. This method can only be used It is used for GIS equipment defect detection, but cannot effectively detect and accurately measure the overall condition of the central conductive component inside the GIS equipment, such as the component size, assembly gap, and surface condition.

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