Hilbert Fractal Antenna for UHF Detection of Partial Discharges in Transformers

被引：57
作者：
Li, Jian [1 ]
Jiang, Tianyan [1 ]
Cheng, Changkui [1 ]
Wang, Caisheng [2 ]
机构：
[1] Chongqing Univ, State Key Lab Power Equipment & Syst Secur & New, Dept High Voltage & Insulat Engn, Coll Elect Engn, Chongqing 400044, Peoples R China
[2] Wayne State Univ, Dept Elect & Comp Engn, Detroit, MI 48202 USA
来源：
IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION | 2013年 / 20卷 / 06期
关键词：
Hilbert fractal antenna; partial discharge; online monitoring; ultra-high-frequency detection; transformer; INDUCED ELECTROMAGNETIC-WAVE; GIS MODEL TANK; PROPAGATION PROPERTIES; OPTIMIZATION; SENSOR; NOISE;
D O I：
10.1109/TDEI.2013.6678849
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：
Electromagnetic waves generated due to partial discharge (PD) can be captured by ultra-high-frequency (UHF) antennas. The size and frequency band of an UHF antenna for PD online monitoring are critical factors for practical installation inside a transformer. This paper presents a compact multi-band UHF Hilbert fractal antenna with wide frequency band and suitable size for easy installation. Design criteria of a PD antenna were proposed and the Hilbert fractal antenna was selected as an appropriate candidate for PD detection. Principle of Hilbert fractal antenna was discussed and a fourth order Hilbert fractal antenna was optimized for detecting PD signals. Actual PD experiments have been carried out for two typically artificial insulation defect models while the antenna was used for the PD measurement. More simulation studies and actual PD experiments have been done to further examine the effects of electromagnetic wave refraction and reflection by transformer components. The results show that the proposed UHF antenna is qualified for PD online monitoring.
引用
收藏
页码：2017 / 2025
页数：9
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