Advantage of superconducting cables atltech P superconducting cables and superconducting cable advantages compared to conventional cable, has obvious advantages: one is the low loss and save energy.
Superconducting cable used in liquid nitrogen vaporization temperature (
About - ℃)
Without resistance to transport large current, conductor loss less than conventional cable /, and the energy loss in the refrigeration, the running total loss only for conventional cable % ~ %;
Second, the large capacity.
The same cross section of a superconducting cable current transmission capacity is ~ times that of the conventional cable;
3 it is to save material.
Has the same transmission ability of superconducting cable compared with the conventional cable, use less metal and insulating materials;
4 it is free from contamination.
The possibility of a superconducting cable did not cause environmental pollution, and the oil filled conventional cable there is the danger of environmental pollution by oil;
In addition, the superconducting cable also has the characteristics of low noise.
Current remote high-capacity electricity generally aluminum overhead bare wire, transmission in big cities usually USES the underground cable, conductor is copper or aluminum wire.
Use of these traditional wire or cable, in the process of conveying electrical energy loss % ~ %.
In order to reduce the power loss in the transport process, to try to improve the voltage, long-distance transmission if use kV or kV ehv lines above.
Porcelain of ehv lines for the insulation of the power transmission tower and have a high request for space use, especially to the line terminal attachment materials and production technology requirements higher, greatly improving the ehv line construction cost.
At present our country still cannot production ehv line terminal attachment, imports of ehv line terminal attachment is very expensive.
If you are using a superconducting cable, ac impedance of a conventional cable /, can reduce the power grid line loss % around;
The application of superconducting cables will also reduce the long distance transmission system voltage, system other equipment the overall cost will reduce accordingly.
In the long run, the application of superconducting cables also makes it easy to long-distance HVDC technology and economy.
Used in HVDC, superconducting cables will reduce power grid line loss % above, shows better economic benefit.
With superconducting cable transmission power is the ability of traditional ~ times that of the conventional cable, so using superconducting cable can also save transmission system of area and space, save a lot of valuable land resources, and accordingly protect the ecological environment of China's first set of practical smooth parallel operation of superconducting cables, show that the superconducting cable technology is mature, on the development of our country's electric power system has a far-reaching influence.
Superconducting cable trunk in the power system of our country and the application of the transmission bottleneck line will be beneficial to improve the security and reliability of the power grid.
In long and large capacity transmission, superconducting cable has incomparable advantages in the system of comprehensive performance, in the long run will be fundamentally solved our country 'China' and other long and large capacity transmission problem.
The near term, high temperature superconducting cable may soon in the following several aspects: (shows advantage
City populated residential areas, skyscrapers, the conventional cable capacity is not enough, no more space of the cable;
Metal smelting equipment such as high current, short, small space applications;
Large current transmission bus in power plant and substation;
Electricity demand rapid development of big cities, growing requirements of power supply capacity, because of the high cost of crowded cities and excavation unable to expand the scope of cable laying, with the help of a superconducting cable, can change in the original pipe, make the power supply capacity increase.
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