PD Characteristics Analysis of Improved Insulating Materials for Power Cables

개질된 전력용 케이블절연체의 부분방전 특성 해석

  • 송일근 (전력연구원 전력계통연구실 P/L) ;
  • 곽희로 (숭실대 전기공학과)
  • Published : 1997.10.01

Abstract

In order tl get Maaterial requirements for the Improviment of erliability of Insulatint materials for power cables, partial discharge characteristics of Polyethylenes were measured by an ultrasonic techjique and Measured signals were processed to cbtain the paraceters useful for thr quantification of partial discharge characteristics of polyethylenes. This technique was applied to obtain material requirements for the development of improved insulating materials for power cables,As a result, it was found that partial discharging activities in polyethylenes were suppressed considerably when p proper amount of acrylic acid, 0.003[wt %]in this particular case, is grafted on polyethylene chains.It can be concludid from the present study that partial discharging actibities in polyethylenes could be suppressed by the modification of polyethylene with proper chemical components, acrilic acid in this particular study.

본 논문은 성능이 우수한 전력케이블용 절연재료 개발에 대한 기초자료를 얻기 위한 연구로서, 초음파 센서를 사용하여 폴리에틸렌의 부분방전 특성을 측정하고 측정된 신호의 정량화를 시도하여 폴리에틸렌에서 발생되는 부분방전을 억제시킬 수 있는 방안에 관한 연구를 수행하였다. 이러한 결과로부터 기본 수지인 저밀도 폴리에틸렌을 적당히 개질하면 폴리에틸렌의 부분방전이 억제될 수 있음을 알았고, 이를 검증하기 위하여 폴리에틸렌을 아크릴산으로 개질하여 아크릴산 그라프트 폴리에틸렌을 제조하였으며, 이에 대한 부분방전 특성을 평가하였다. 평가결과, 본 연구에서는 아크릴산이 0.03 wt〔%〕정도 그라프트되면 폴리에틸렌의 부분방전이 크게 억제됨을 발견하였다. 이러한 결과로부터 폴리에틸렌을 적당한 화학성분으로 개질하면 폴리에틸렌의 부분방전이 크게 억제되었다.

Keywords

References

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