Fundamental Research on Dielectric Breakdown between XLPE and Silicon Rubber Interface in HV Cable Joint
The effect of interfacial pressure on the insulation breakdown of the interface between a piece of XLPE and a piece of silicon rubber was investigated. A pair of plate-needle electrodes was sandwiched at the interface. A uniformly distributed weight was put on the sample with the interfacial pressure from 20 kN/cm2to 300 kN/cm2. The breakdown voltage and the discharge current were recorded; the light distribution at the interface were visually recorded and then analyzed. Results demonstrate that correlation exists between the discharge light and discharge current; breakdown voltage decreases with the decrease of interfacial pressure; both the distributions of light and current depend on the interfacial pressure. Therefore, sufficient interfacial pressure between cable and joint should be met to lengthen the cable joints life expectation.
Cable Joint XLPE Silicon rubber Interfacial failure Discharge light distribution
B.X.Du L.Gu Xiangjin Zhang Xiaohui Zhu
Key Laboratory of Power System Simulation and Control of Ministry of Education School of Electrical Tianjin Professional University, Tiajin 300402, China Key Laboratory of Power System Simulation and Control of Ministry of Education School of Electrical
国际会议
哈尔滨
英文
97-100
2009-07-19（万方平台首次上网日期，不代表论文的发表时间）