scholarly journals Study on the Application of an Ultra-High-Frequency Fractal Antenna to Partial Discharge Detection in Switchgears

Sensors ◽  
2013 ◽  
Vol 13 (12) ◽  
pp. 17362-17378 ◽  
Author(s):  
Chenguo Yao ◽  
Pan Chen ◽  
Congjian Huang ◽  
Yu Chen ◽  
Panpan Qiao
Keyword(s):  
High Frequency ◽  
Partial Discharge ◽  
Fractal Antenna ◽  
Ultra High Frequency ◽  
Discharge Detection

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.

Portable Acoustic-Electric Combined System for Partial Discharge Detection in GIS

2013 ◽  
Vol 303-306 ◽  
pp. 555-561
Author(s):  
Bin Liu ◽  
Yue Hu ◽  
Qian Chen ◽  
Wei Dong Zhang ◽  
Ling Yu Cao ◽  
...  
Keyword(s):  
High Frequency ◽  
Phase Distribution ◽  
Detection System ◽  
Partial Discharge ◽  
Time Difference ◽  
Discharge Process ◽  
Distribution Analysis ◽  
Ultra High Frequency ◽  
Time Frequency ◽  
Discharge Detection

A portable acoustic-electric detection system for GIS partial discharge is developed. This system integrates both high and low-speed data acquisition devices, and is capable of multichannel joint detection of ultra-high-frequency and high-frequency current as well as ultrasonic signal generated during the GIS partial discharge process. The software of this system is developed based on LabVIEW. It can successively capture, acquire and store the pulse waveform of partial discharge, calculate the phase of discharge pulse and realize time-frequency analysis and amplitude-phase distribution analysis of PD signals at the same time. By calculating the time difference of multi-channel ultra-high-frequency (UHF) signals and of PD ultrasonic signals or the time difference between the two, the system is able to locate the PD source. This system has been applied to on-site partial discharge detection of 220kV and 500kV GIS substations, and the test results have verified the performance of the system.

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