At present, aluminum alloy is widely used in China's power transmission line in the form of steel core heat-resistant aluminum alloy strand, all aluminum alloy strand and aluminum alloy core stranded wire. 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.