CAJ | 학술논문

分别对铜芯和铝芯交联聚乙烯制造针刺缺陷并高频高压加速老化,然后对老化后的电缆试样进行硅氧烷注入式修复,并对铜芯和铝芯电缆的缆芯进行了电镜扫描(SEM)和X射线光电子能谱(XPS)分析,研究硅氧烷注入式修复技术的修复效果及其对缆芯导体的腐蚀性.结果表明:修复后的电缆的绝缘性能显著提高,其介质损耗角正切值(tanδ)与工频击穿电压均优于未修复老化电缆,且与新电缆基本相同.铝芯电缆的缆芯明显被腐蚀,而铜芯电缆不受影响.
분별대동심화려심교련취을희제조침자결함병고빈고압가속노화,연후대노화후적전람시양진행규양완주입식수복,병대동심화려심전람적람심진행료전경소묘(SEM)화X사선광전자능보(XPS)분석,연구규양완주입식수복기술적수복효과급기대람심도체적부식성.결과표명:수복후적전람적절연성능현저제고,기개질손모각정절치(tanδ)여공빈격천전압균우우미수복노화전람,차여신전람기본상동.려심전람적람심명현피부식,이동심전람불수영향.
A needle defect was made in the copper core and aluminum core XLPE cables, and the ca-bles were accelerated aging under high frequency and high voltage. Then the aging cables were repaired by injecting siloxane, and the repair effects and corrosion of the siloxane on conductor were studied by scanning electron microscope(SEM) and X-ray photoelectron spectroscopy(XPS). The results show that the insulation properties of the repaired cables are improved significantly. The tanδ and breakdown voltage of the repaired cables are better than that of the aged cables, which are almost equal to the new cables. The aluminum core of the repaired cables is badly corroded, while the copper core is unaffected.