Transformer partial discharge ultrasonic vector array positioning device and manufacturing method thereof

Abstract

The invention provides a transformer partial discharge ultrasonic vector array positioning device and a manufacturing method thereof. The positioning device comprises a box body. At least three ultrasonic vector array elements in linear arrangement are inlaid in the box body. Each of the ultrasonic vector array elements comprises a shell which is internally provided with a wireless data collecting module, three piezoelectric type speed sensors, hanging rods for positioning the piezoelectric type speed sensors and connection rods. The three piezoelectric type speed sensors are orderly connected vertically through the connection rods. The center axes of the three piezoelectric type speed sensors are in pairwise mutual orthogonal connection, and the center of the piezoelectric type speed sensor in the middle is at the centre of sphere of the shell. The positioning device can be directly placed in transformer oil, a local discharge ultrasonic signal in the transformer oil is obtained through the wireless data collecting module, thus the positioning of a partial discharge source is completed, and the positioning device has the advantages of simple structure, small volume and good directivity.

Description

technical field [0001] The invention relates to the technical field of transformer detection, in particular to a positioning device for detecting the position of partial discharge in transformer oil and a manufacturing method thereof. Background technique [0002] With the development of our country's economy, the requirements for the reliability of the power system are getting higher and higher. As the hub of the power system, the reliability of the transformer's operation is directly related to the safety and stability of the power system. In the process of statistical analysis of the actual faults of transformers, it is found that insulation faults are the main reason affecting the normal operation of transformers, and partial discharge of transformers is an important cause of insulation faults, so the detection of partial discharges has become an important aspect of insulation status detection. [0003] At present, the development of condition-based maintenance equipment...

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Problems solved by technology

The partial discharge of transformer oil belongs to the ultra-high frequency band, so there is no relevant report on the use of ultrasonic vector array positioning devices in the field of partial discharge positioning technology

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