KIEE International Transactions on Electrophysics and Applications

The Korean Institute of Electrical Engineers (대한전기학회)
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A Study on the Correlation Between the PD Pattern and the Type of Electrical Trees Propagation in the XLPE Insulation for the Underground Power Transmission

  • Lee, Jeon-Seon (Dep. of Electrical Engineering & Science Research Institute) ;
  • Kim, Jeong-Tae (Deot. of Electrical Engineering of Daejin University) ;
  • Koo, Ja-Yoon (Dep. of Electrical Engineering & Science Research Institute)
  • Published : 2001.06.01

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Abstract

In this work, the correlation between the PD Patterns and the electrical tree propagation has been investigated by use of the specimen removed from the insulation of the real 154 kV XLPE underground power cables. As a result, it could be deduced that the PD pattern regarding electrical trees depends on their type which could be classified into three different distinct groups such as branch-bush mixed. Considering the results of our investigation, if the partial discharge magnitude is only considered for the diagnosis of the cable system, it is possible to draw a wrong decision. Therefore, it is possible to propose that the time characteristics of PD pattern should be taken into account for the diagnosis of the cable system in addition to the conventional $\Phi$-q-n characteristics.

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