广州地区老旧高压电缆运行现状分析及建议

交联聚乙烯高压电缆设计使用年限为30年，目前广州地区已有两回运行中的高压电缆线路超过30年，运行25年及以上的高压电缆线路已达23.7公里，且规模还在逐年增加。广州地区运行25年及以上的老旧高压电缆运行状态如何及应采取怎样的运维策略成为亟待解决的难题。本文通过预防性试验分析、局部放电试验分析、历年故障缺陷情况分析及样本电缆剩余寿命研究等手段对广州地区运行25年及以上高压电缆线路的运行现状进行综合评估并提出相应的运维建议。

Analysis and Suggestion on Long-term Operating High Voltage Cable in Guangzhou

Service time for XLPE high voltage cable is 30 years. Currently in Guangzhou, two high voltage cable lines have been operating for over 30 years. Those over 25 years have been reached 23.7 kilometers in length. It is increasing year by year. That the conditions of the cable should be aware of and which kind of operation and maintenance should be carried out needs to be found out. This passage gives comprehensive estimation and corresponding operation and maintenance suggestions on the conditions of high voltage cable lines operating over 25 years in Guangzhou by prevention test analysis, partial discharge test analysis, faults over the years analysis and study on the rest of service time of sample cable, etc.