Cradle to Consumer
Identity ID
b1334fe9-740e-4e28-9a38-e3240ee9a434
Materials
Associated ID
40ae7b5a-d0cc-4057-ab4f-5bf2f52f3a6c
Included activities starts
Included activities ends
Description
This dataset is a market dataset, representing the consumption market of the region; the dataset includes the transport of the product from the gate to the consumer end, and the transport service is calculated according to the transport situation of this product in this region. The product represented by this dataset is an optical fibre composite overhead ground wire, which is a cable combining lightning shielding and optical fibre communication functions, mainly composed of optical fibres, aluminium-clad steel wires, aluminium alloy wires and stainless steel tubes, etc., made through processes such as optical fibre colouring, stainless steel tube welding and stranding, with an average weight of about 10315 kg per kilometre. The key upstream raw materials of this product are optical fibres, ink, stainless steel strip, solder, welding rod, aluminium-clad steel wire and alloy aluminium wire, etc., and downstream it is mainly applied in lightning shielding and optical fibre communication of high-voltage and ultra-high-voltage transmission lines. In terms of system boundary, the packaging of the product and the transport, use, scrapping, recycling and final disposal after leaving the factory, as well as infrastructure such as the manufacture of production equipment and the construction of plant buildings, are not included within the dataset boundary. In terms of data sources and data processing, the data inventory is formed by merging data from multiple sources.
Activity Description
The system boundary is the cradle-to-gate of OPGW (optical fiber composite overhead ground wire), with input of raw materials as the starting point and finished OPGW leaving the factory as the end point. The main stages include optical fiber coloring (optical fiber, ink, etc.), stainless steel pipe welding (stainless steel strip, solder, welding rod, etc.), and stranding (aluminum-clad steel wire, alloy aluminum wire, etc.).
Process Description
Overhead ground wires refer to wires that are directly connected to the earth on high-voltage and ultra-high-voltage lines. Their shielding of wires and coupling with wires can reduce the chance of lightning striking the wires directly. When lightning strikes a tower, the lightning current can be diverted through the overhead ground wire to reduce the potential at the top of the tower and improve the lightning resistance level. Overhead ground wires are divided into two types: steel-core aluminum stranded wires and fiber optic composite overhead ground wires; fiber optic composite overhead ground wires have both traditional overhead ground wire and communication functions. They are mainly composed of optical fibers, aluminum-clad steel wires, aluminum alloy wires, stainless steel tubes, etc., in the form of cables, and are widely used in lightning protection shielding and optical fiber communications for high-voltage and ultra-high-voltage transmission lines.
Time period
2023
2026
Geography
China,Hainan
Macroeconomic value
Business-as-Usual
Data validation
Yes
Technology
Current Technology
Technology comment
The production of optical fiber composite overhead ground wire mainly includes processes such as optical fiber coloring, stainless steel tube welding and stranding. The optical fiber that has passed the inspection is colored first; then the specifications of the stainless steel tube and the number of optical fibers in the tube are determined according to the production needs, and the stainless steel tube is welded. Fiber paste is added to the welded steel tube to improve the mechanical properties and waterproofness of the optical fiber; finally, the stainless steel tube optical unit is stranded with aluminum-clad steel wire or aluminum alloy wire, anti-corrosion paste is added during stranding, and the finished optical fiber composite overhead ground wire is formed after packaging.