摘要
高压电力电缆在中国城市现代化建设过程中运用越来越广泛。金属护层产生环流是高压单芯电力电缆中的普遍现象。简述了护层感应电压模型及影响环流的因素,定性分析了护层保护器对护层环流的影响,提出护层保护器异常会导致护层环流增大,并通过220 kV侯塘一线故障案例得到了验证。
High - voltage power cable is used more and more in the process of urban modernization in China. The metal sheath generating circulation is a common phenomenon in the high - pressure single - core power cable. The induced voltage model of sheath and the factors influencing the circulation are briefly described, and the impact of sheath protector on sheath circulation is qualitatively analyzed. It is proposed that the sheath circulation will be increased caused by the abnormal sheath protector, and the research is verified through the fault case in 220 kV Houtang transmission line.
出处
《四川电力技术》
2013年第5期87-90,共4页
Sichuan Electric Power Technology
