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《Advanced Technology of Electrical Engineering and Energy》 2002-01
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Study on ultra-high-frequency characteristics of partial discharge signals in transformer oil

WANG Guo\|li, HAO Yan\|peng, LI Yan\|ming (Department of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, China)  
Theoretical analysis shows that E\|M waves radiated by discharges in transformer oil have wide band spectrum, and are propagated as transverse E\|M waves. In this paper, an experimental study on PD current pulse and the radiated E\|M waves in oil is done, also these relationships are given. Results show that, PD current pulse in oil has a very short risetime, which is capable of generating ultra\|high\|frequency (UHF) signals at frequencies up to at least 1\^5 GHz, and these E\|M waves can be picked up by UHF sensors. Thus the feasibility of applying UHF partial discharge monitoring techniques to an in\|service oil\|filled power transformer is established.
【CateGory Index】: TM855
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【Citations】
Chinese Journal Full-text Database 3 Hits
1 WANG Guo li, HAO Yan peng, LI Yan ming (Dep. of Elec. Eng., Xi'an Jiaotong University, Xi'an 710049, China);Present and furute development of partial discharge detection in power transformers[J];Advanced Technology of Electrical Engineering and Energy;2001-02
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8 WANG Guoli\+1, ZHENG Yi\+2, SHEN Song\+1, HAO Yanpeng\+1, LI Yanming\+1(1.Department of Electrical Engineering, Xian Jiaotong University, Xian 710049, China; 2.Electric Power Planing and Engineering Institute, Beijing 100011, China);Neural network with AGA-BP hybrid algorithm for UHF PD pattern recognition in transformers[J];Advanced Technology of Electrical Engineering and Energy;2003-02
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