Ultrasonic Phased-Array Three-Dimensional Imaging Detection for Insulation Component Positions in Ultra-High Voltage Transformers

DOI

10.2991/978-94-6463-606-2_5How to use a DOI?

Keywords

Ultra-high voltage transformer; insulation component; position detection; three-dimensional imaging; phased array ultrasonic inspection

Abstract

To accurately detect the position of the paper insulating component inside the UHV (ultra-high voltage) transformers and prevent the discharge fault, the research on ultrasonic phased array three-dimensional imaging detection technology of the insulating cardboard position was carried out. Firstly, a large-size multi-medium (steel-oil-paper-steel) simulation detection component was fabricated, and a multilayer medium accurate positioning method based on sound velocity error compensation was established. Based on Snell’s theorem, the focused delay rule of the ultrasonic phased array in a multilayer medium is established, and the effectiveness of the focus delay rule is verified in the finite element simulation model of acoustic propagation in a multilayer medium. According to the characteristics of the data collected by phased array ultrasonic testing, combined with the structure of the transformer bushing, the point cloud data with three-dimensional spatial coordinates and characteristic values is generated to realize the three-dimensional visual imaging of the detection results. The results show that the established ultrasonic phased array three-dimensional imaging detection method can effectively realize the positioning detection and three-dimensional imaging of the position of the insulating cardboard in the bushing, providing advanced nondestructive testing technology for ensuring the safe operation of the UHV/EHV transformer.

Copyright

© 2024 The Author(s)

Open Access

Open Access This chapter is licensed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International License (http://creativecommons.org/licenses/by-nc/4.0/), which permits any noncommercial use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license and indicate if changes were made.

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TY  - CONF
AU  - Junli Du
AU  - Chao Li
AU  - Chaohua Wang
AU  - Yongfeng Zhao
AU  - Hua Zhu
AU  - Rui Qiu
AU  - Guanhua Wu
AU  - Xi Chen
PY  - 2024
DA  - 2024/12/24
TI  - Ultrasonic Phased-Array Three-Dimensional Imaging Detection for Insulation Component Positions in Ultra-High Voltage Transformers
BT  - Proceedings of the 2024 6th International Conference on Civil Engineering, Environment Resources and Energy Materials (CCESEM 2024)
PB  - Atlantis Press
SP  - 33
EP  - 45
SN  - 2352-5401
UR  - https://doi.org/10.2991/978-94-6463-606-2_5
DO  - 10.2991/978-94-6463-606-2_5
ID  - Du2024
ER  -