摘要
针对OPGW雷击断股问题,指出了雷电形成电弧时产生的高温是OPGW雷击断股的主要原因,对不同状况下OPGW雷击断股的主要因素进行了剖析,同时制定出相应的预防措施。对广东省500 kV江茂乙线OPGW雷击情况进行具体分析,认为原材料缺陷、加工工艺缺陷、接地方式、雷击形成的电弧损害和光缆抗雷击能力不足等都能引起OPGW断股,指出了提高OPGW抗雷击能力需解决的关键问题。
Based on the phenomenon of wire breakage in OPGW caused by lightning strike, it is found that this problem is mainly due to the high temperature caused by the arcing of lightning. The main affecting factors on this problem under different coditions are analyzed, and the corresponding precautions are proposed. Through the specific analysis of the lightning strike case of OPGW on 500 kV Jiangmao line Ⅱ , Guangdong, we hold that many factors may cause wire breakage in OPGW, such as drawbacks of raw materials and process, grounding mode, lightning strike arc caused damage, and the shortage of the lightning protection ability of OPGW. Finally, some key measures to enhance the lightning protection ability of OPGW are pointed out.
出处
《光纤与电缆及其应用技术》
2006年第3期28-31,共4页
Optical Fiber & Electric Cable and Their Applications
