Future technical analysis of wire and cable industry

DATE:2017-11-20 16:17:54 FROM:

With the development of China's electric power industry, the requirements for supporting industries are also getting higher and higher. As an important part of the electric power supporting industries, electric wire and cable are also no exception. They are faced with the demand for upgrading so as to meet the demand of China's power development . The future of wire and cable companies should improve technology, raw materials conservation, development of new environmentally friendly materials and other efforts.
According to the author's judgment, that the future development of wire and cable industry technology in the future mainly involves the following aspects.
In recent years, the development of carbon fiber faster and faster, there may be a carbon fiber cable may in the future to replace the traditional ACSR. Carbon fiber cable is a traditional ACSR (bare wire) alternative products, mainly used in 110kv ~ 220kv line. Compared to conventional ACSR, ACCC has a 29% increase in aluminum cross-sectional area and a 20% lighter weight per unit length, so ACCC can greatly increase line capacity and reduce the allowable overhang loss. By replacing a large number of ordinary wires with ACCC wires, the power grid company can realize grid expansion without adding any new lines, greatly saving land, towers and construction costs and meeting energy conservation and efficiency policy directions. Carbon fiber composite wire will be a revolutionary alternative to existing wire. Thus providing new opportunities for those who have a strong competitive advantage in the field of carbon fiber composite wire.
High-temperature superconducting technology will get big development in the future. Due to its advantages of relatively low price, large capacity, low loss and no electromagnetic pollution, high temperature superconducting cables have gained international prominence. Many countries have taken the development of the superconducting industry to a strategic level. China has made major breakthroughs in HTS technology. In August this year, the superconducting cable of the maximum length operated in the ITER device under the supervision of the officials of the headquarters of the International Thermonuclear Experimental Reactor (ITER) program - the 765 meter CB superconducting cable conductor in silver colored Chang Tong company off the assembly line.
At the same time, on the basis of high-temperature cables, relevant plans of the state also set up support for major projects of "HTS transmission". At present, China imports about 2 billion yuan of high-temperature cables each year from abroad for domestic construction. It is estimated that the market of global superconductor applications will reach 244 billion U.S. dollars (about 1,488.9 billion yuan) by 2020, and the high-temperature superconducting cables account for about 5% Share.
Therefore, the development and application of high temperature superconducting technology will be the future of wire and cable industry, an important technology.
Aluminum rare earth optimization technology will be great development. Continuous casting and rolling process with the production of electrical aluminum rod has been quite popular in China, the performance is good. However, the equipment still stays in the early 70s and there is not much technological innovation. We should actively promote our unique aluminum rare earth optimization treatment technology, and the use of some of the key special equipment and technology introduced to add aluminum zirconium alloy, the aluminum-fired furnace transformed into aluminum fuel or natural gas furnace, all to eliminate the burning of aluminum furnace burning coal Coal dust and flue gas emissions, and set the flue gas filter to purify flue gas to improve the quality of emissions and improve the yield and reduce costs, while the wire temperature from 70 ℃ to 150 ℃, carrying capacity increased 1.6 times.
Aluminum copper generation technology has been proposed for many years, has been widely used in countries such as Europe and the United States, the scope of applications in Asia is not widespread, but in recent years many Chinese wire and cable companies have begun to try aluminum copper. Universal Cable has even developed a standard aluminum alloy cable system with Shanghai Wire & Cable Research Institute. Since copper has better electrical conductivity and thermal conductivity than aluminum and can reduce the loss of electric energy when the current is supplied, it has been hard for wire and cable manufacturers to find it. At present, more than 60% of China's wire and cable industry use copper to make cables. Due to the relative lack of copper resources, and currently the domestic proven copper resources have been deep or even over-exploitation.
The conductive properties of aluminum alloy cables are similar to those of copper cables, and their flexibility is superior to that of copper cables, which has changed the shortcoming of poor mechanical strength, low resistance to fatigue and accidents at joints , Which ensures the continuous stability of the cable connection under overload and overheating for a long time. It also remedies the defects of memory effect and high rebound performance of the traditional copper cable and reduces the line loss.
In addition, aluminum alloy cables have unparalleled economic and environmental advantages over traditional copper cable cables, no matter from raw material production, processing, manufacturing to transportation, installation, operation and recycling. Undoubtedly will be the best substitute for copper cable, which is actually a good thing for the wire and cable company which is expected to reduce the demand for capital. At the least, we should know that China is a country with little copper output. Rely on imports, but it is indeed a large aluminum producer. Not only that, aluminum prices are much lower than copper prices, undoubtedly very beneficial for reducing funding needs.
With the advent of smog and other environmental pollution, people today pay more and more attention to environmental protection, and the wire and cable industry is no exception. Therefore, it is bound to face the environmental protection requirements. Wire and cable industry mainly refers to the environmental protection of environmental materials. At present, a large number of production of wire and cable rubber, polyvinyl chloride, polyethylene and other polymer materials. In the production process produces a large number of toxic and harmful gases. Therefore, we must actively develop environmentally friendly materials, production of environmentally friendly wire and cable. Japan Fujikura and other cable companies in the development of environmentally friendly wire and cable, in order to monopolize the market, and actively promote the government enacted environmental protection wire and cable product standards. In recent years, the sales volume of environment-friendly wire and cable has rapidly expanded. Ordinary wire and cable and flame-retardant wire and cable can not compete with them. In addition, the wire and cable in the production process more than expected corner, can be recycled directly.
From the perspective of the installation of wire and cable, it is also facing a new trend of development, that is, the sheath is thin and the cross section is miniaturized. In view of the ease of installation, use, and transportation while minimizing the cost of raw materials, there is a growing trend for wire and cable products to develop thinner sheaths and smaller cross-sections while still maintaining current carrying capacity. This requires an integrated wire and cable industry technology over the previous ones.