Ray-based dry type transformer winding material detection method and device

Abstract

The invention discloses a ray-based dry type transformer winding material detection method and a ray-based dry type transformer winding material detection device. The ray-based dry type transformer winding material detection method comprises the following steps: emitting radioactive rays from one side of a winding of a detected dry type transformer, and detecting energy of the radioactive rays passing through the winding of the detected dry type transformer by a detector on the other side of the winding of the detected dry type transformer; judging the material of the winding of the detected dry type transformer according to a change of the energy of the radioactive rays before and after passing through the winding of the detected dry type transformer. The detection device comprises a ray source, the detector, a control module and an output module; a ray window of the ray source is formed in one side of the winding of the detected dry type transformer, and the detector is arranged on the other side of the winding of the detected dry type transformer; the output end of the detector is connected with the control module; the output end of the control module is connected with the output module. The ray-based dry type transformer winding material detection method and the ray-based dry type transformer winding material detection device have the advantages of no need of disassembling the dry type transformer, simplicity, easiness in use, no limitation on site and equipment and high detection speed.

Description

technical field [0001] The invention relates to a dry-type transformer winding material intelligent detection technology, in particular to a radiation-based dry-type transformer winding material detection method and device. Background technique [0002] In recent years, due to the rapid development of the economy, the technology of dry-type transformers has been continuously improved. Although the cost of dry-type transformers is high, compared with oil-immersed transformers, it has the advantages of small size, convenient installation, simple maintenance, small safety clearance, and safety. Good performance and many other advantages. The manufacturing materials of dry-type transformers are basically flame-retardant substances. The insulating material such as glass fiber wound around the coil has good self-extinguishing properties, no arc will be generated due to short circuit, and the resin will not produce toxic gas under high heat. The outer resin layer of the coil is th...

AI Technical Summary

Problems solved by technology

Excessive winding temperature can lead to transformer failure and damage, and poor winding can lead to problems such as excessive load loss and high life reduction, which are directly related to the winding material

However, since the outer layer of the dry-type transformer is sealed with insulating materials such as glass fiber, the coil material cannot be directly tested. Therefore, in order to reduce production costs, some manufacturers currently use aluminum windings instead of copper windings. Through conventional tests such as Tests such as no-load, transformation ratio, etc. cannot judge the material of the winding coil. Some units are used to detect the winding material inside the solid seal and insulating material, and even use destructive testing.

Images