A unique sensitivity verification combined with real-time partial-discharge identification method

被引：17
|
作者：
Hoshino, T [1 ]
Maruyama, S [1 ]
Nojima, K [1 ]
Hanai, M [1 ]
机构：
[1] Toshiba Co Ltd, Kanagawa 2100862, Japan
来源：
IEEE TRANSACTIONS ON POWER DELIVERY | 2005年 / 20卷 / 03期
关键词：
gas-insulated substation (GIS); IEC 60270 and ultra-high frequency (UHF) method; insulation diagnosis; partial discharge; sensitivity verification;
D O I：
10.1109/TPWRD.2005.848464
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The sensitivity verification with the ultrahigh-frequency (UHF) method will be discussed in this paper. The sensitivity line with the UHF method based on the conventional (IEC 60270) one is different in the radial position of the defects inside gas-insulated substation (GIS), because transverse-electromagentic mode can be more weakened while transverse electric (TE)/transverse magnetic (TM) modes can be more enhanced as the defect comes close to the enclosure than the conductor. The result makes it difficult to detect the free particle with IEC 60270. A unique sensitivity verification, which is combined with real-time PD identification method, first enables us to identify the defects and thereafter to calibrate the apparent charge of each specified defect according to the sensitivity line.
引用
收藏
页码：1890 / 1896
页数：7
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