VHF-UHF帯電波干渉計システムによる部分放電源特定のための基礎研究  [in Japanese] Fundamental Study on Locating Partial Discharge Source using VHF-UHF Radio Interferometer System  [in Japanese]

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Author(s)

Abstract

The electromagnetic waves emitted from partial discharge (PD) due to material defects in high-voltage electric power apparatus and facilities are broadband signals including VHF, UHF (Very High Frequency, Ultra High Frequency). A VHF-UHF radio interferometer system (VURIS) for locating PD source has been originally designed, constructed and tested. The system is based on the idea extracting the phase differences at different frequencies between a pair of the received signals by the Fourier transform and computing the direction of the electromagnetic waves emitted from PD source. It can be small-sized, more suitable for compact and portable system, because UHF half-wavelength dipole antennas are used to receive the electromagnetic waves and the baseline between the antennas is very short. And it requires fewer antennas to achieve equivalent angular resolution than a narrow band interferometer system, which requires multiple baselines corresponding to a few times of half-wavelength of the observation frequency. Therefore, it's able to reduce the operating time at the measurement site because it's not needed to arrange many antennas at the many points. The indoor test results indicate that the system is able to estimate the arrival angle of the electromagnetic waves emitted from PD source.

Journal

  • IEEJ Transactions on Power and Energy

    IEEJ Transactions on Power and Energy 122(5), 629-636, 2002-05-01

    The Institute of Electrical Engineers of Japan

References:  37

Cited by:  7

Codes

  • NII Article ID (NAID)
    10008217030
  • NII NACSIS-CAT ID (NCID)
    AN10136334
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    03854213
  • NDL Article ID
    6152908
  • NDL Source Classification
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL Call No.
    Z16-794
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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