scholarly journals Design of a UHF Antenna for Partial Discharge Detection of Power Equipment

2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Youyuan Wang ◽  
Junfeng Wu ◽  
Weigen Chen ◽  
Yajun Wang
Keyword(s):  
High Frequency ◽  
Microstrip Antenna ◽  
Partial Discharge ◽  
Dielectric Materials ◽  
Coaxial Cable ◽  
Detection Sensitivity ◽  
Duty Ratio ◽  
Spiral Antenna ◽  
Archimedean Spiral ◽  
Ultra High Frequency

A single-arm Archimedean spiral antenna that can be directly fed by a 50 Ωcoaxial cable is investigated in this study. Every antenna parameter is optimized under simulation to make the antenna work in the ultra-high frequency band. The influence of dielectric materials, feed cone angle, and antenna duty ratio is also examined. Partial discharge (PD) experiments on several typical artificial insulation defects are conducted, and a single-arm Archimedean spiral antenna and a typical microstrip antenna are utilized for PD measurement. The PD characteristics of different insulation defects are also analyzed. Results show that the designed antenna is suitable for ultra-high frequency monitoring. The detection sensitivity of the single-arm spiral antenna is superior to that of the ordinary microstrip antenna. The former can be utilized in wide-band measurement fields.

Design of Broadband Planar Spiral Antenna for Partial Discharge in Cable

2013 ◽  
Vol 816-817 ◽  
pp. 443-445
Author(s):  
Yong Chun Liang ◽  
Zhao Long Qiao ◽  
Zhi Peng Ge ◽  
Teng Jiao Feng
Keyword(s):  
High Frequency ◽  
Partial Discharge ◽  
High Sensitivity ◽  
Frequency Component ◽  
Simulation Software ◽  
Superior Performance ◽  
Spiral Antenna ◽  
Archimedean Spiral ◽  
Xlpe Cable ◽  
Ansoft Hfss

The detection of partial discharge in power cables is an effective method to diagnosis early fault of XLPE cable . When partial discharge occurs, it emits abundant frequency component in ultra-high frequency (UHF) band, and broadband planar spiral antenna is an effective sensor to detect UHF partial discharge signals. High frequency electromagnetic simulation software Ansoft HFSS is used to simulate and analysis planar Equiangular spiral antenna and Archimedean spiral antenna. The simulation results show that the two kinds of antennas work effectively in 400 MHZ ~ 1 GHZ frequency band and are high sensitivity and superior performance. Because of with smaller size and larger gain, the Archimedean spiral antenna is used to detect UHF signals of partial discharge in XLPE cable.

Present Situation and Prospect of Internal Sensors for UHF Detection in GIS

2015 ◽  
Vol 738-739 ◽  
pp. 38-41
Author(s):  
Yu Bing Duan ◽  
Hao Zhang ◽  
Jun Yong ◽  
Bo Yang ◽  
Xiao Li Hu ◽  
...  
Keyword(s):  
Performance Indicators ◽  
High Frequency ◽  
Partial Discharge ◽  
Present Situation ◽  
Ultra High Frequency ◽  
Gas Insulated Switchgear ◽  
Discharge Detection

This paper summarizes the application situation of the ultra-high frequency (UHF) method in gas insulated switchgear (GIS) partial discharge detection, as well as the differences between internal and external UHF sensors. The performance indicators of internal sensors are introduced, and five main types of internal sensors are discussed and evaluated. In addition, several problems to be solved are posed for researchers.

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