Diagnosis Technique of Surface Contamination Degree for EPDM Insulator according to Variation of Environment Condition

환경조건의 변화에 따른 EPDM 애자의 표면 오손정도의 진단기술

  • 박재준 (중부대학교 전기전자공학과) ;
  • 최인혁 (한전전력연구원 전력계통연구실) ;
  • 김정부 (중부대학교 전기전자공학과)
  • Published : 2004.10.01


The waveforms of the leakage currents for the surface discharge according to the degree of salt contamination and the variation of environmental condition on the EPDM polymer insulators, were shown in this paper. The variation phenomena of fundamental wave, 3rd and 5th harmonic waveforms were also shown from the beginning of the applied voltage and to the flashover voltage. To develop the technique of percentage contamination degree of EPDM polymer insulator according to the variation of environmental condition, the distortion degree of 3rd and 5th harmonic wave to the fundamental wave was utilized through the spectrum analysis for the waveforms of leakage current in the simulation of salt and fog test. The fact that distortion degree % of 3rd and 5th harmonics for fundamental wave is a necessary indicator for the assessment of contamination degree for the polymer insulators, was known.


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