368 / 2022-03-15 17:16:48
Propagation Characteristics Analysis of Transformer Partial Discharge Signal Based on Bushing External Sensor
partial discharge,external sensor,propagation characteristics
终稿
Liying Yu / North China Electric Power University
Shusheng Zheng / North China Electric Power University
Chang Ye / North China Electric Power University
Ju Kong / North China Electric Power University
Chengrong Li / North China Electric Power University
Partial discharge detection is one of the main means to discover the insulation defects of transformers and casings. The existing partial discharge UHF detection methods mostly adopt the internal installation method, which limits the size of the sensor and needs to reform the transformer structure. The detection sensitivity of the external casing UHF detection method is greatly related to the installation position of the sensor. Therefore, this paper first establishes the simulation model of electromagnetic wave propagation in casing; secondly, the dynamic process of electromagnetic wave propagation and the signal strength of typical azimuth electromagnetic wave are shown. It is found that the electromagnetic wave propagates outward with the flange gap and the top guide rod as the main radiation source. Thirdly, the influence of flange gap width on UHF detection is analyzed. Finally, the simulation and experiment are combined to obtain that the flange and the vicinity of the elevation are reasonable installation positions of UHF sensors.
重要日期
  • 会议日期

    09月25日

    2022

    09月29日

    2022

  • 08月15日 2022

    提前注册日期

  • 09月10日 2022

    报告提交截止日期

  • 11月10日 2022

    注册截止日期

  • 11月30日 2022

    初稿截稿日期

  • 11月30日 2022

    终稿截稿日期

主办单位
IEEE DEIS
承办单位
Chongqing University
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