| Title |
A Study on Characteristics of Surface Discharge with Interface Condition |
| Authors |
최진욱(Jin-Wook Choe) ; 이웅엽(Woong-Yup Lee) ; 남석현(Seok-Hyun Nam) ; 김진규(Jin-Gyu Kim) |
| DOI |
https://doi.org/10.5370/KIEE.2019.68.11.1355 |
| Keywords |
Surface discharge; Roughness; Interfacial pressure; Lubricant |
| Abstract |
As the competition in the electrical power cable market becomes more intense, not only the quality and the price, but also the ease assembly are becoming important. The failure in the joint and termination were caused by surface discharge along the interface of cable insulation and rubber sleeve for electric field grading. The factors affecting the surface discharge are contamination, interfacial pressure, surface roughness and lubricant.
In this paper, the difference of surface roughness was investigated based on the grain size of sandpaper to simplify the cable preparation process. In addition, the influence of the factors was evaluated by the surface discharge test according to the surface roughness, the interface pressure, and the type of the lubricant. |