Study on a New and High Efficient OPGW Melting Ice Scheme

It is a important field how optical-fiber composite overhead ground wire (OPGW) has melted ice to avoid disasters and reduce loss, and to operate safety of transmission line. In the paper, a kind of melting ice scheme, achieved through combining new OPGW ground wire and distributed fiber-optic temperature measurement technology, is researched, to solve the problem of melting ice and monitoring temperature of ground wire. Firstly the paper introduced the basic structure of OPGW melting ice scheme, and then it is focused on distribution characteristics and variation of melting ice temperature of the new OPGW ground wire. And third, through a comprehensive analysis of the heat convection characters of ice-melting temperature field and the time characters of the melting ice, above these, we proposed a well-designed scheme combined with distributed optical-fiber temperature measuring technology and embedded OPGW structure, which can fit to effectively monitor the melting ice process of ground wire, to adjust melting strategies in real-time, and to shorten melting time. Last, we concluded the new melting ice scheme is well effective and a improved efficiency.