TY - GEN
T1 - Experimental research on partial discharge radiated UHF signal attenuation characteristics in GIS
AU - Li, Tianhui
AU - Rong, Mingzhe
AU - Liu, Dingxin
AU - Wang, Xiaohua
AU - Wu, Junhui
PY - 2013
Y1 - 2013
N2 - For detecting partial discharge (PD) phenomenon in gas insulated switchgear (GIS), ultra-high-frequency (UHF) method, which detects electromagnetic wave (EM wave) in UHF band with good immunity to noise, has been widely employed to avoid insulation accidents. In order to deeply understand the propagation process of EM wave and improve the utilization of the UHF method, it is necessary to investigate the attenuation characteristics of UHF signal from broadband PD sensor. In this research, by using the self-designed planar equiangular spiral antenna, the output UHF signal is detected and analyzed experimentally in a 252 kV GIS with L-shaped structure (LS) and disconnecting switch (DS) tank. When DS is closed and is open, the output signal is measured under two applied voltage levels individually in the test. And the results are mainly investigated in detail by time, statistics and frequency analysis. The propagation rules of the peak to peak value (Vpp) and transmission rate of the UHF signal are summarized. This research provides some referential significance towards the rational use of UHF method and better implementation of PD detection.
AB - For detecting partial discharge (PD) phenomenon in gas insulated switchgear (GIS), ultra-high-frequency (UHF) method, which detects electromagnetic wave (EM wave) in UHF band with good immunity to noise, has been widely employed to avoid insulation accidents. In order to deeply understand the propagation process of EM wave and improve the utilization of the UHF method, it is necessary to investigate the attenuation characteristics of UHF signal from broadband PD sensor. In this research, by using the self-designed planar equiangular spiral antenna, the output UHF signal is detected and analyzed experimentally in a 252 kV GIS with L-shaped structure (LS) and disconnecting switch (DS) tank. When DS is closed and is open, the output signal is measured under two applied voltage levels individually in the test. And the results are mainly investigated in detail by time, statistics and frequency analysis. The propagation rules of the peak to peak value (Vpp) and transmission rate of the UHF signal are summarized. This research provides some referential significance towards the rational use of UHF method and better implementation of PD detection.
KW - Gas insulated switchgear (GIS)
KW - UHF
KW - electromagnetic wave
KW - partial discharge (PD)
KW - propagation characteristic
UR - https://www.scopus.com/pages/publications/84894295722
U2 - 10.1109/TENCON.2013.6718940
DO - 10.1109/TENCON.2013.6718940
M3 - 会议稿件
AN - SCOPUS:84894295722
SN - 9781479928262
T3 - IEEE Region 10 Annual International Conference, Proceedings/TENCON
BT - 2013 IEEE International Conference of IEEE Region 10, IEEE TENCON 2013 - Conference Proceedings
T2 - 2013 IEEE International Conference of IEEE Region 10, IEEE TENCON 2013
Y2 - 22 October 2013 through 25 October 2013
ER -