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Journal of electrical engineering & technology v.7 no.3, 2012년, pp.389 - 395   SCIE 피인용횟수: 3
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Frequency Spectrum Analysis of Electromagnetic Waves Radiated by Electric Discharges

Park, Dae-Won    (Division of Electrical and Electronics Engineering, Korea Maritime University   ); Kil, Gyung-Suk    (Division of Electrical and Electronics Engineering, Korea Maritime University   ); Cheon, Sang-Gyu    (Research Institute, PANASIA CO., LTD.   ); Kim, Sun-Jae    (Research Institute, PANASIA CO., LTD.   ); Cha, Hyeon-Kyu    (VDE Global Services Korea  );
  • 초록

    In this paper, we analyzed the frequency spectrum of the electromagnetic waves radiated by an electric discharge as a basic study to develop an on-line diagnostic technique for power equipment installed inside closed-switchboards. In order to simulate local and series arc discharges caused by an electric field concentration and poor connections, three types of electrode systems were fabricated, consisting of needle and plane electrodes and an arc generator meeting the specifications of UL 1699. The experiment was carried out in an electromagnetic anechoic chamber, and the measurement system consisted of a PD free transformer, a loop antenna with a frequency bandwidth of 150 kHz-30 MHz, an ultra log periodic antenna with a frequency bandwidth of 30 MHz-2 GHz, and an EMI test receiver with a frequency bandwidth of 3 Hz-3 GHz. According to the experimental results, the frequency spectra of the electrical discharges were widely distributed across a range of 150 kHz-400 MHz, depending on the defects, while commonly found between 150 kHz and 10 MHz. Therefore, considering the ambient noise and antenna characteristics, the best frequency bandwidth for a measurement system to monitor abnormal conditions by detecting electromagnetic waves in closedswitchboards is 150 kHz-10 MHz.


  • 주제어

    Electromagnetic wave .   Series arc discharge .   Corona discharge .   Frequency spectrum .   Closed-switchboard.  

  • 참고문헌 (17)

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    3. Seoung-Yong Jun, Cheol-Hwi Ryu, Yun-Sok Lim, Ja- Ho Lee, Ja-Yoon Koo, "Discrimination of Insulation Defects in a Gas Insulated Switchgear (GIS) by use of a Neural Network Based on a Chaos Analysis of Partial Discharge (CAPD)", Journal of Electrical Engineering & Technology. vol. 2, no. 1, pp. 118-122, 2007.     
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  • 이 논문을 인용한 문헌 (3)

    1. Lee, Jung-Yoon ; Jo, Hyang-Eun ; Park, Dae-Won ; Kil, Gyung-Suk ; Oh, Jae-Geun 2013. "Optimal Design of an Antenna for the Detection of Partial Discharges in Insulation Oil" 전기전자재료학회논문지 = Journal of the Korean institute of electronic material engineers, 26(4): 309~314     
    2. 2013. "" Journal of electrical engineering & technology, 8(6): 1468~1473     
    3. 2015. "" Journal of electrical engineering & technology, 10(3): 1174~1180     

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