Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 1997.11a
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- Pages.409-412
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- 1997
The Aging Measurement of Water Tree Using AgNO$_3$ Solution
AgNO$_3$ 을 이용한 수트리의 실시간 열화계측
- Kim, Duck-Keun (Dept. of Electrical Eng., Chonnam National University) ;
- Ooh, Soo-Hong (Dept. of Electrical Eng., Chonnam National University) ;
- Lee, Jin (The Major in Electrical Eng., Faculty of Information Engineering, Mokpo National University) ;
- Lee, Eun-Hak (Dept. of Electrical Eng., Halla Institute of Technology) ;
- Kim, Tae-Sung (Dept. of Electrical Eng., Chonnam National University)
- Published : 1997.11.01
Abstract
The phenomenon of water tree degradation of underground distribution power cables is taking place in polymeric insulation materials under the existence of water and application of electric stress, but water tree is not easy to observe, o water tree features in power cables are shown after cutting and dying with methyleneblue. In previous method, it is impossible to acquire continuous treeing data, and when the insulation material has been cut, the micro crack(water tree) has been damaged. In this paper, to overcome these deflects, the etching method is made use of making needle electrode about 170[
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