Development of an Algorithm for Distinguishing Between Transmitted and Reflected Ultrasonic Signals Using A Hybrid Transmission and Reception Method with Non-Contact Ultrasonic Measurement Technology

被引：0

作者：

Kang, Hae-Gweon ^{[2
]}

Han, Ga-Ram ^{[2
]}

Jeon, Jeong-Chay ^{[2
]}

Bang, Jun-Ho ^{[1
]}

机构：

[1] Dept. of IT Applied System Engineering, Jeonbuk National University

[2] Electrical Safety Research Institute, Korea Electrical Safety Corporation

来源：

Transactions of the Korean Institute of Electrical Engineers | 2024年 / 73卷 / 11期

关键词：

Cast-resin Transformer; Reflective Wave; Time of Flight; Transmission Wave; Ultrasonic;

D O I：

10.5370/KIEE.2024.73.11.2113

中图分类号：

学科分类号：

摘要：

Although technologies that allow the detection of abnormalities in high voltage electrical installations without power interruption are being applied, there are limitations in clearly determining facility faults. In particular, molded-type electrical equipment has a structure that completely seals internal components from the outside, making it difficult to detect internal anomalies. Therefore, it is challenging to detect early internal faults using existing power-on diagnostic method. In response, a new diagnostic method has been introduced that utilizes ultrasound to penetrate epoxy insulation and estimate the internal temperature of high-voltage molded-type transformer windings, along with a non-contact ultrasonic measurement technology. This paper, based on previous research, develops an algorithm for distinguishing between transmitted and reflected ultrasonic signals using a hybrid transmission and reception method with non-contact ultrasonic measurement technology. The performance of the algorithm was verified using high-voltage winding samples from a molded transformer specially fabricated for the experiment. © The Korean Institute of Electrical Engineers.

引用

页码：2113 / 2118

页数：5

共 5 条

[1] Park J. H., A Statistical Analysis on the Electrical Accident, Korea Electrical Safety Corporation, 29-32, pp. 2020-2023
[2] Yasutomo Kakimoto, Masahiro Kozako, Masayuki Hikita, Elucidation of impedance frequency characteristics of cast resin transformer and application to partial discharge diagnostic method, Electronics & Communications in Japan, 105, 1, pp. 1-9, (2022)
[3] Han G. R., Bang J. H., Rye I. H., Kim T. H., So B. M., Analysis of Ultrasonic Propagation Characteristics for Internal Temperature Estimation of Cast-resin Transformer, Journal of KIEE, 72, 11, pp. 1526-1533, (2023)
[4] Han G. R., A Study on the Internal Temperature Estimation and Detection Algorithm of a Cast Resin Transformer using 1 MHz Ultrasonic Waves, (2023)
[5] Kang H. G., Han G. R., Study on the propagation characteristics of epoxy insulating materials using non-contact ultrasonic waves with hybrid transmission-reception method, The KIEE summer conference, pp. 2484-2485, (2024)

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