220kV忻义线116号金具断裂分析

The Fracture Analysis of No.116 Fitting on the 220kV Xinyi Line

结合220kV忻义线116号中相横担侧挂点处金具在大风作用下发生的断裂故障情况,通过金具破坏试验、金具受力计算等手段,从金具本体、连接方式、运行环境等方面细致分析了220kV忻义线116号金具断裂原因,并提出了改变金具连接方式、强风区杆塔采用加强型金具、加强日常运行检查等针对性预防措施。

This article is based on the fracture fault of the 220 kV Xinyi Line No. 116 Fitting at the mesophase cross arm side hanging point due to the strong wind. Through the fitting failure test and its force calculation, this article carefully analyzes the cause for this fracture fault from the aspects of the fitting itself, the connection method and its operation environment. Then, it also proposes some preventive measures like changing the fitting connection method, using strengthened fitting in the strong wind region, and enforcing the daily operation test.