Characteristics of Radiated Electromagnetic Fields From A Cylindrical Cavity

원통형 캐비티에서 방출되는 방사 전자파 특성

  • Received : 2015.10.21
  • Accepted : 2015.12.14
  • Published : 2016.02.29


This paper, presents the characteristics of electromagnetic fields radiated from a pole-transformer. The cylindrical cavity is used to measure electromagnetic fields radiated from a pole-transformer when partial discharge occures inside the pole-transformer. The theoretical analysis is conducted by a finite difference time domain (FDTD) method. As a result, frequency characteristics of the radiated electromagnetic waves emitted from the inside the cavity to the outside through the 1st and 2nd bushings could be observed for the configuration of the cylindrical cavity with a radiation window. The frequency characteristics of electromagnetic field are also studied according to the enclosure structure of the cylindrical cavity. To verify the theoretical analysis, computed results are compared to experimental results.


Electromagnetic fields;Cylindrical cavity;Partial discharge;Pole-transformer


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