The Transactions of the Korean Institute of Electrical Engineers C (대한전기학회논문지:전기물성ㆍ응용부문C)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지

A Study on the Electrical Properties of Electrical Tree Degradation in XLPE Cable Insulation

XLPE 케이블의 전기트리 열화에 따른 전기적 특성 검토

  • Published : 2000.07.01
Download PDF
⟨ Previous Next ⟩

Abstract

In order to improve the reliability of XLPE cables, it is necessary to understand the mechanism of electrical and water tree degradation. Especially, electrical tree initiation and propagation are important in XLPE cable insulation. This paper deals with the changes of electrical properties of XLPE cable insulation with electrical tree degradation. To understand the electrical properties of XLPE insulation, specimens were prepared by 22.9kV distribution cable and made in a type of block. Ogura needles having tip radius of 10${\mu}{\textrm}{m}$ were inserted into each block pieces. AC voltages of 8kV, 10kV and 12kV at 60Hz were applied to needle. We investigated the relationship between electrical properties(PD quantity, tan$\delta$ and DC current) and the growth of electrical tree. The electrical properties of the specimens were measured from initiation of tree to breakdown and their characteristics were analyzed.

Keywords

References

  1. 速水敏行, 'CVケ-ブル', コロナ社, 1986
  2. 特別高壓回轉機.ケ-ブル絶緣劣化診斷技術調査委員會, '特別高壓回轉機.ケ-ブルの絶緣劣化診斷技術', 日本電氣學會技術報告 第2部, 267號, pp.51-103, 1988. 3
  3. 木山謙一郞, '特別高壓回轉機 ケ-ブルの壽命診斷', OHM, pp27-33, 1996.10
  4. T.Hashizume, T.Tani, 'A Reconsideration of Criteria for Insulation Diagnosis of 6.6kV XLPE Cable', 8th International Symposium on High Voltage Engineering, pp193-196, 1993. 08
  5. Seeding, H.G. et. aI., 'Partial Discharge Characteristics of Electrical Trees in Polymeric Cable Insulation', Conf. record, Conf. on Electrical Insulation & Dielectric Phenomena, pp91-96, 1994
  6. 特別高壓 CV ケ-ブルの絶緣劣化診斷技術調査委員會, '特別高壓 CV ケ-ブルの絶緣劣化形態と絶緣診斷技術の動向,' 日本電氣學會技術報告, 第668號, 1998
  7. N.Hozumi et. aI., 'The Inflence of Space Charge on the Growth of an Initial Electrical Tree in Polyethylene', T. IEE Japan, Vol. 111-A No.4, 1991
  8. 이광우 외, '부시형 전기트리에 수반되는 부분방전의 특성분석', 대한전기학회 춘계학술발표연구회 논문집, pp124-128, 1999
  9. 강동식 외, 'XLPE의 전기트리 열화에 따른 전기적 특성의 변화', 대한전기학회 하계학술대회 논문집, pp2136-2138. 1999
  10. N.Yoshimura et. al.. 'Influence of Morphology on Tree Initiation and Growth in Polyethylene', T. IEE Japan. Vol. 117-A No.4, 1997
  11. S.Kobayashi, K.kudo, '交流トリ-の進展に伴う發光現象のカオス性', T. IEE Japan, Vol. 116-A No.8, 1996