Design of External Ultra-high Frequency Partial Discharge Sensor for Large Transformer

被引：0
|
作者：
Zhang X. [1 ]
Zhang J. [1 ]
Xiao S. [1 ]
机构：
[1] School of Electrical Engineering and Automation, Wuhan University, Wuhan
来源：
Gaodianya Jishu/High Voltage Engineering | 2019年 / 45卷 / 02期
关键词：
Antipodal Vivaldi antenna; Fault diagnose; Partial discharge; Transformer; Ultra-high frequency; Ultra-wide band;
D O I：
10.13336/j.1003-6520.hve.20190130020
中图分类号：
学科分类号：
摘要：
In order to overcome the disadvantages in the installation method of ultra-high frequency (UHF) sensors, combined with the particularity of 750 kV transformer, an antipodal Vivaldi antenna sensor was designed and installed on the joint of transformer. The influences of linear gradient microstrip and slot edge on the performance of sensor were studied. Besides, in order to reduce the deterioration of the sensor performance, the metal shell of this sensor was specially designed. The simulation and experiments reveal that the working frequency band of this sensor is 807 MHz-3 GHz and its maximum gain is up to 9.4 dB. The laboratory test results indicate that the response of this sensor to the partial discharge ultra high frequency signal is higher than that of Planar rectangular spiral antenna. It can meet the requirements of on-line monitoring the partial discharge of large transformers. © 2019, High Voltage Engineering Editorial Department of CEPRI. All right reserved.
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页码：499 / 504
页数：5
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