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Zhu Z.-G.,Shenzhen Electrical Power Bureau | Jiang J.-W.,Shenzhen Electrical Power Bureau | Zhong J.-L.,Shenzhen Electrical Power Bureau | Zeng X.-J.,Shenzhen Electrical Power Bureau
Gaoya Dianqi/High Voltage Apparatus | Year: 2010

Through using ultrasound and special high-frequency partial discharge (PD) detection methods, partial discharge detection for 220 kV wutong station 110 kV GIS is carried out. The PD signal has been found in the compartment of Wuyan I line 1535. Open and check the equipment, the obvious discharge mark has been found in SF6 gas chamber of 15354 disconnector. This example proves that both methods are effective in detecting PD signals, and provides effective methods and basis for finding defects in GIS.


Zhu Z.-G.,Shenzhen Electrical Power Bureau | Jiang J.-W.,Shenzhen Electrical Power Bureau | Zhong J.-L.,Shenzhen Electrical Power Bureau | Wang W.-J.,Shenzhen Electrical Power Bureau | And 2 more authors.
Gaoya Dianqi/High Voltage Apparatus | Year: 2012

Through using ultrahigh-frequency partial discharge (PD) online-monitoring system of GIS, the PD signal was found in the compartment of Xiugao No.1 line of 110 kV GIS in 110 kV Gaoxin substation. The live partial discharge detection and location of GIS, as well as uncovering check, were conducted, and the PD source was found at A-phase cable terminal joint of Xiugao No.1 line of 110 kV GIS in 110 kV Gaoxin substation. By replacing the A-phase cable terminal joint, the PD signal disappeared, and a possible accident was hence avoided, which demonstrates that the method of ultra high frequency partial discharge (PD) online-monitoring system of GIS is effective in detecting the fault of cable terminal joint in GIS.

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