Electromagnetic Wave Radiated from an Insulating Spacer in Gas Insulated Switchgear with Partial Discharge Detection

被引:26
作者
Kaneko, Shuhei [1 ]
Okabe, Shigemitsu [1 ]
Muto, Hirotaka [2 ]
Nishida, Manabu Yoshimura Chieko [2 ]
Kamei, Mitsuhito [2 ]
机构
[1] Tokyo Elect Power Co Ltd, Tsurumi Ku, Kanagawa 2308510, Japan
[2] Mitsubishi Electr Corp, Amagasaki, Hyogo 6618661, Japan
关键词
Gas insulated switchgear (GIS); partial discharge (PD); electromagnetic wave (EM-wave); slot antenna; resonance frequency; highly-sensitive detection; MODE TRANSFORMATION; GIS;
D O I
10.1109/TDEI.2009.4784552
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
As a means of diagnosing partial discharge (PD) signals propagate inside a Gas Insulated Switchgear (GIS), a study for the leakage of electromagnetic waves (EM-waves) emitted from the insulating spacer was implemented. The EM-waves leaking out from the solid insulator have the resonance frequencies depend on the spacing between adjacent bolts in the direction of the flange circumference, because the leakage portion is the equivalent of a slot antenna. In this paper, using an electromagnetic analysis model which has a simulated spacer on a concentrically-shaped GIS tank, the output characteristics of the EM-waves that leaked out from the slit were analyzed under various conditions such as the spacing between adjacent bolts, the width of the spacer, the dielectric constant of the spacer and the form of the flange. Also the actual measurement by the experimental equipment used to simulate the model was implemented for comparison with the analytical results. Consequently, the optimal specifications of the sensor and the measurement method used to achieve highly-sensitive detection for practical use were summarized and proposed as well as evaluating the effectiveness of the electromagnetic analysis model adopted in this paper.
引用
收藏
页码:60 / 68
页数:9
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