Supersonic deformation detecting method and detector for transformer winding

A transformer winding, ultrasonic detection technology, applied in the direction of measuring devices, using sound waves/ultrasonic waves/infrasonic waves to analyze solids, using sound waves/ultrasonic waves/infrasonic waves for material analysis, etc., can solve problems such as restrictions on popularization and use, winding deformation difficulties, etc., to achieve cost Low cost, easy operation and high detection efficiency
CN1332374AInactive Publication Date: 2002-01-23WUHAN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
WUHAN UNIV
Publication Date
2002-01-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

Based on the pulse supersonic wave reflection principle and after the supersonic probe is made to contact closely with the casing of transformer oil tank, pulse supersonic wave is transmitted and thereflected supersonic wave is received by the supersonic probe and the received supersonic wave is transferred into corresponding electric pulse signal, which is amplified in the detecting circuits and treated in computer to obtain the shape, size and deformation of the transformer winding. The detector consists of supersonic probe, detecting circuits and computer and the detecting circuits consist of isolating circuit, pulse trigger circuit, amplifier circuit, data collector, etc. The present invention can measure the shape and size of transformer to ensure the safety of power system.
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Description

(1) Technical field

[0001] The invention belongs to the technical field of electrical equipment fault diagnosis, in particular to an ultrasonic detection method and device for transformer winding deformation. (2) Technical background

[0002] The power transformer is one of the most widely used and most critical components in the power system, and plays a very important role in the power system. However, when the power transformer is in the process of transportation or when a short-circuit fault occurs in the power system, the winding will be displaced or deformed by the impact of strong mechanical force or electrodynamic force, resulting in damage to the insulation of the winding and potential accidents. If the fault is not found in time , and put the transformer into operation, it will burn out the transformer and cause a large-scale blackout, which seriously threatens the safe operation of the power system.

[0003] At present, the electric test method and spectrum metho...

Claims

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