A Novel Partial Discharge Detection Method for Power Transformers On Site Adopting Its Component as Ultra-High Frequency Sensor

2019 ◽  
Vol 34 (6) ◽  
pp. 2269-2271 ◽  
Author(s):  
Xuanrui Zhang ◽  
Minxia Shi ◽  
Jun Cai ◽  
Junhao Li



2014 ◽  
Vol 635-637 ◽  
pp. 666-669 ◽  
Author(s):  
Bo Chen

In order to ensure power supply reliability and reduce a variety of power supply failure, we analyze the development status, advantages and disadvantages of partial discharge detection techniques about the various Gas -insulated Metal-enclosed Swith Gear (GIS). We put forward the application of ultra high frequency (UHF) technology for GIS partial discharge online monitoring technology methods to solve the problems of the difference of the pulse current method of anti-interference ability and ultrasonic sensitivity the problem of low. According to the deficiency of the traditional ultra high frequency sensor, we developed a new window type of ultra high frequency sensor, and compared with conventional in vitro type UHF sensor. Experimental results show that that the window-type UHF sensor sensitivity and anti-jamming capability are superior to conventional high-frequency sensor



Author(s):  
Walid S. Salah ◽  
Ahmed H. Gad ◽  
Mahmoud A. Attia ◽  
Soliman M. Eldebeikey ◽  
Abdelhady R. Salama


2015 ◽  
Vol 738-739 ◽  
pp. 38-41
Author(s):  
Yu Bing Duan ◽  
Hao Zhang ◽  
Jun Yong ◽  
Bo Yang ◽  
Xiao Li Hu ◽  
...  

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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