Industrialization prospect of heat-resistant aluminum alloy wire
At present, aluminum alloys are widely used in China's power transmission lines in the form of steel core heat resistant aluminum alloy strands, aluminum clad steel core heat-resistant aluminum alloy strands, and all aluminum alloy strands. According to the bidding information of the domestic market in recent years, the number of alloyed wire bidding is rising rapidly, and the conservative estimate will reach more than 700 thousand tons in 2015.
The development of China power grid is carried out around the two major themes of UHV and smart grid. The high voltage transmission line network has been built, about 4000km per year more than 500kV line put into operation; planning of UHV transmission line nearly 20, is currently planning the deployment of 12, the total length of the DC line is about 13914km, the expected DC line wire 550000 tons; the AC line is about 7700km, the AC line wire 760000 tons.
The national grid energy saving pilot wire deployment planning, in 2012, China Ministry of infrastructure 30 pilot projects, reduce the transmission loss, save maintenance cost, the comprehensive effect is remarkable; in 2013, China will select 450 infrastructure project pilot, 2014 Aluminum Alloy wire will be fully replace the ordinary steel cored aluminum strand.
60%IACS heat-resistant aluminum conductor as a good performance special conductor has its application in China's urban network capacity upgrading, substation construction, long span line and general line, and has great development and application prospects.
As everyone knows from the southwest provinces and the Three Gorges power transmission to Guangdong line, need to go through Hunan, like Guizhou, Yunnan and other provinces of the alpine valleys and heavy ice areas, excellent performance to transmission line construction in these areas, it is not enough only by the conductor ACSR, it is not reasonable. It has been repeatedly demonstrated by experts that the steel core aluminum alloy strand will be the most important new type of wire, which will be used in these projects. So many long and extra high voltage transmission lines need to be built in a relatively short time. This provides a new and most important development opportunity for our aluminum alloy wire manufacturers.