Experimental study on the partial discharge characteristics of the disk-spacers in different parts of GIS in service

It is very important that a GIS on-line detecting system is built availably, and it is also the key to acquiring successful detection. And it is of great significance to find out which parts are liable to faults as well as their real discharge characteristics. By using an ultra-wideband partial disc...

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Bibliographic Details
Main Authors: Chen Yu, Cheng Yonghong, Liu Tong, Hu Xuesheng, Zhu Zhelei, Cui Wei, Jiao Sushan
Format: Conference Proceeding
Language:English
Subjects:
Electromagnetic fields
Electromagnetic scattering
Frequency
Geographic Information Systems
Insulation
Monitoring
Partial discharges
Power supplies
System testing
Ultra wideband technology
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Summary:It is very important that a GIS on-line detecting system is built availably, and it is also the key to acquiring successful detection. And it is of great significance to find out which parts are liable to faults as well as their real discharge characteristics. By using an ultra-wideband partial discharge detecting system, the discharge signal from disk-type spacer in key part of 110 kV GIS is acquired and studied. These key parts are the part nearby PT, the part nearby CT, the part nearby CB, the part nearby bus, the part nearby the LA. According to the different machine structure and electromagnetic field non-uniform distribution, these disk-spacers have different partial discharge characteristics. It is found that spacers in different parts of GIS have their own partial discharge characteristics, and their discharge frequencies concentrate below 300 MHz, which provide numerical reference for the on-line monitoring of GIS.
DOI:10.1109/ISEIM.2005.193464