Optical fiber composite medium-voltage cable

Abstract

The invention relates to an optical fiber composite medium-voltage cable which is characterized that the cable comprises an outer cladding layer and an inner core, wherein the inner core comprises three cable cores and an optical cable unit, and the outer cladding layer comprises a wrapping layer, an isolated sleeve, an armor layer and an outer sheath; a fiber reinforced plastic (FRP) optical fiber reinforcement core is arranged at the center of the optical fiber unit, a group of optical fiber loose tube is extruded around the FRP optical fiber reinforcement core, and a water blocking tape and a tracking resistant sheath are extruded outside the optical fiber loose tube; and each cable core comprises a conductor and a metal shielding layer, the metal shielding layer wraps outside the conductor, and a conductor shielding layer, an insulation layer and an insulation shielding layer are sequentially extruded between the conductor and the metal shielding layer. A product simultaneously has functions of information communication and power transmission; on the condition of no increase on cable laying cost, the functions of upper-end connection of power optical fiber to home, power line monitoring, early warning and the like can be synchronously achieved, the fault response speed is increased, and the line maintenance cost is reduced.

Description

technical field [0001] The invention relates to the technical field of cables, in particular to an optical fiber composite medium-voltage cable used in the fields of electric power and communication, and in particular to a composite medium-voltage cable suitable for 6-35kV smart grids. Background technique [0002] With the further deepening of my country's urbanization process, some cities in China officially launched the "Urban Optical Network" action plan in June 2009, gradually replacing the original copper wire access with optical fiber access, which has a great impact on the urban basic broadband network structure and capabilities. Upgrade to promote the all-optical evolution of the access network, support the development of high-bandwidth applications, and realize the "four-network integration" of front-line access to households. The traditional single and fragmented power transmission and communication wiring mode is changing towards an integrated construction mode, w...

AI Technical Summary

Problems solved by technology

[0004] The transmission cables used in the 3.6 / 6kv to 26 / 35kv transmission lines of the existing urban medium-voltage power network do not have optical fiber composite cables and do not have the function of transmitting optical signals. Therefore, they cannot meet the optical fiber communication requirements of the entire intelligent medium-voltage power network. It is difficult to realize the needs of multi-network integration such as power grid, telecommunication network, broadcasting network, Internet, etc.

Images