Advancing New Techniques for UHF PD Detection and Localization in the Power Transformers in the Factory Tests

被引：83

作者：

Mirzaei, H. R. ^{[1
]}

Akbari, A. ^{[1
,2
]}

Gockenbach, E. ^{[2
]}

Miralikhani, K. ^{[3
]}

机构：

[1] KN Toosi Univ Technol, Dept Elect Engn, Tehran 158754416, Iran

[2] Leibniz Univ Hannover, Hannover, Germany

[3] Iran Transfo Co, Zanjan, Iran

来源：

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2015年 / 22卷 / 01期

关键词：

Partial discharge; power transformer; ultra-high frequency; UHF antenna; PARTIAL DISCHARGES; OPTIMIZATION; LOCATION;

D O I：

10.1109/TDEI.2014.004249

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Partial discharge (PD) detection in the ultra-high frequency (UHF) range is state of the art. One of the most critical points in this detection method is adopting proper and suitable antenna design. In this paper, a new design of UHF antennas is introduced which is suitable to be used on the transformers in the HV laboratories of the manufacturers. To ensure the applicability of the new antenna, experimental UHF PD measurements are carried out on a transformer tank model as well as on the real power transformers. Installing several UHF antennas on the transformer tank to perform defect localization is also an important issue. There are rigorous limitations and lack of the places to install the antennas. This problem is almost solved by using the mentioned new antenna design. The proper positioning of the antennas is the other critical point in the UHF method. Placing the antennas in improper positions will damage the localization accuracy. In this paper, an automatic algorithm is introduced to determine the best installation positions for the antennas to enhance the localization accuracy. The efficacy of this algorithm is investigated by using the results of experimental measurements on power transformers.

引用

页码：448 / 455

页数：8

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