Fault detection method of transformer winding based on combined algorithm of ultrasonic synthetic aperture arc scanning

Authors

Nan Zhou, Center of Electrical & Electronic Technology, Shanghai Jiao Tong University, Shanghai 200240 , China
Cuan Wang, Center of Electrical & Electronic Technology, Shanghai Jiao Tong University, Shanghai 200240 , China
Hailong Yang, Guangyuan Power Supply Company, State Grid Sichuan Electric Power Company, Guangyuan 628033 , China

Keywords

transformer winding, ultrasonic synthetic aperture focusing technology, arc scanning joint algorithm, fast fault location, online detection

Abstract

In order to solve the problem that the resolution of the transformer windings ultrasonic detection system decreases with the increasing detection distance, this paper proposes a combined algorithm of ultrasonic synthetic aperture arc scanning, so that the resolution of the detection system is only related to the transducer itself. By applying the proposed method, faults can be quickly located, thus detection efficiency and detection accuracy are improved. Finally, a transformer winding ultrasonic synthetic aperture detection system is designed in this paper, and a 400 kHz ultrasonic transducer is used to conduct experiments on a transformer. The final experimental results show that the detection system can locate the deformation position of the transformer winding quickly online. The relative error of the detection is only 4.26%.

DOI

10.19781/j.issn.1673-9140.2022.05.022

First Page

198

Last Page

206

Recommended Citation

Zhou, Nan; Wang, Cuan; and Yang, Hailong (2022) "Fault detection method of transformer winding based on combined algorithm of ultrasonic synthetic aperture arc scanning," Journal of Electric Power Science and Technology: Vol. 37: Iss. 5, Article 22.
DOI: 10.19781/j.issn.1673-9140.2022.05.022
Available at: https://jepst.researchcommons.org/journal/vol37/iss5/22