Large-section optical fiber composite overhead phase line and manufacturing method thereof

Abstract

The invention relates to an optical cable and a manufacturing method, and the high-voltage optical cable is suitable for long-distance, larger-capacity and low-loss long-distance power transmission, in particular to a large-section optical fiber composite overhead phase line and a manufacturing method thereof. The large-section optical fiber composite overhead phase line comprises an optical fiber unit, aluminium-covered steel wires and aluminium wires, the large-section optical fiber composite overhead phase line is at least five layers, the center line of the first layer is one aluminium-covered steel wire, the optical fiber unit is twisted with a plurality of aluminium-covered steel wires to form the second layer, and then the outer layer is twisted with a plurality of aluminium wires to form an aluminium twisting layer. The manufacturing method of the large-section optical fiber composite overhead phase line includes two processes of optical fiber manufacture and cabling manufacture. The large-section optical fiber composite overhead phase line is strong in tension resistant performance, is suitable for a mountainous area and the like which have high requirements for tower distances and sag, and has doubles functions of phase cable power transmission and optical fiber signal transmission. In addition, the large-section optical fiber composite overhead phase line is suitable for direct current based deicing technique, in an ice rain prevalent area, once a conductive wire is covered by ice rain, and the direct current based deicing technique can be used to enable the large-section optical fiber composite overhead phase line to be powered with direct current.

Description

technical field [0001] The invention relates to a long-distance, high-capacity, low-loss high-voltage long-distance power transmission optical cable and its production method, especially a large cross-section optical fiber composite overhead phase line and its production method. Background technique [0002] At present, the application places of large cross-section optical fiber composite overhead phase lines are generally medium-voltage systems (10-110kV) without ground wires in overhead lines, and there are also examples of applications in transmission lines with higher voltages (110kV and above). According to the operation example, the large cross-section optical fiber composite overhead phase line has better performance. [0003] In China, it has been nearly four years since the first 10kV line was officially put into operation at Shenzhen Laohukeng Power Plant by Shijiazhuang Development Zone Huaneng Electric Co., Ltd. and Shenzhen SDIC Co., Ltd. in early 2006. However...

AI Technical Summary

Problems solved by technology

However, there has been no research and development of 220kV lines and supporting fittings for products, and OPPCs with small cross-sections are used for transmission in areas involving minefields, high pollution, high altitude, high temperature and humidity, high cold and heavy ice covering lines, and the transmission pressure is relatively high.

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