On May 30th, Lu Wei, General Manager of Power Grid Division of Zhongtian Technology Group disclosed to the media that in the bidding for the first and second batch of special wires of the State Grid this year, the winning rate of Zhongtian Technology was 43.01%, and the winning bid amount increased by 571.76 as compared with that of last year. %. In the bidding of local special wires, the winning rate of Zhongtian Technology was 47.06%, and the amount of winning bids increased by 196.62% as compared with the same period last year. The special wire that marks the technology of Zhongtian has a unique "innate advantage", and it can steadily grasp the current domestic market share of special wire in Zhongtian. The number of metrics in special conductors rose sharply in the same period of last year, indicating that the market demand for special conductors in China has expanded.
According to Yu Weiren, chief engineer of Zhongtian Technology Special Wire Research Institute and chief engineer of Zhongtian Aluminum Wire Co., Ltd., Zhongtian is promoting the application of “new technologies, new processes, and new materials†to promote “two types and three new types†of the national grid. The construction of transmission lines has made positive contributions. Zhongtian special conductors are mainly used in key projects and expansion projects of infrastructure projects. The application directions are the UHV, windy sites, large sections, heavy ice areas, large spans, and line upgrading and capacity expansion of infrastructure lines.
Zhongtian Technology's special wire products for smart grid construction include: 1. High-strength aluminum alloy conductors Main application areas: Medium-to-heavy ice area, crossing lines, increasing the span between towers, reducing the number of towers and floor space, Improve the conductivity of the wire; Second, the main application areas of heat-resistant aluminum alloy wire: China's capacity increase demand, line corridors, economically developed cities, electricity peaks and valleys fall, requires a short construction period; Third, high-strength heat-resistant aluminum alloy twisted Line main application areas: medium-span line and capacity requirements; IV. Medium-strength aluminum alloy wire/aluminum-core aluminum-strand wire main application areas: Medium-strength aluminum alloy with high conductivity, reduced line electromagnetic losses, reduced line investment, future alternatives Aluminum-strand stranded steel wire; V. Aluminum-clad Invar ultra-heat-resistant aluminum alloy wire (multiple capacity wire) Main application areas: capacity increase requirements (can meet double capacity requirements), tight line corridors, economically developed cities, and peaks and valleys of electricity consumption Large, requiring short construction period; VI. Main applications of gap type conductors: Capacity increase requirements, high conductivity, reduced line losses , Line corridors are tense, economically developed cities, and peaks and valleys of electricity are widely used to increase line investment returns.
Zhongtian Technology has built a nationwide special wire R&D and production base. It has many years of experience in the production, quality management, installation, application and application of power transmission lines. It also has complete industrial chains such as special power cable accessories, wire fittings, and engineering services. At the same time, Zhongtian Technology insists on independent innovation as its source of power. In recent years, the company has passed one new product certification every year. In January 2011, medium-strength alloys passed the identification of CEC, filling the domestic gap and highlighting technology. On the hard skills, "special wire to find Zhongtian" has become the industry consensus. Zhongtian Special Wire won the bid for the Three Gorges Project, Shenzhen Qianwan Power Plant Project, Beijing Olympics, Shanghai World Expo, Guangzhou Asian Games major capacity increase renovation project, Qinghai-Tibet AC-DC interconnection project and other major projects. Zhongtian Special Wire won the exclusive bid of 1000KV Jinhua Southeast, 800KV DC Up-line and Jinsu Line, 660KV Ningdong Line UHV Project. At the same time, in view of the positive role of Zhongtian Special Wires in the transformation of power grids in various provinces and cities across the country, special conductors in 2011 made an encouraging start, with good news and frequent successes. They have won numerous bids for Guangdong Power Grid, Liaoning Power Grid, and Sichuan Power Grid.
According to the Ministry of Construction of the State Grid Corporation of China, the promotion and application of special conductors is an important technical measure to achieve energy conservation and consumption reduction of the power grid and promote environmental protection. It is a concrete practice for the implementation of the life cycle management of power grid assets, and it is a national grid company that implements national energy-saving emission reduction strategies. The deployment of major decisions is also an important achievement in the scientific development concept of learning and practice in the field of power grid construction, and it is of great significance. Special wire transmission is a key technology of the HVDC transmission line project, especially the UHV power grid, which can effectively reduce the line loss and the surface field strength of the wire, improve the energy transmission efficiency, and have a higher comprehensive price compared with the ordinary wire transmission. The benefits are significant and the market has a broad application prospect.
Due to strong export demand, overseas demand is dominated by special wires. Zhongtian Technology has a clear competitive advantage. Zhongtian Technology special wire has been exported to more than 20 countries and regions. With the further expansion of Zhongtian Group's overseas division, it will surely bring about a new round of development of Zhongtian overseas market. In the future, the overseas market will be equally divided with the domestic market. .
Huang Chongji, the only academician of the Chinese Academy of Engineering in China's wire and cable industry, stated that the application of high-end aluminum alloy wires, heat-resistant aluminum alloy wires, and aluminum-clad steel wires in China’s high-end overhead wire products is not due to technological development and production of these products. Not enough capacity, but because the market is using too little. The reason for the small amount of market usage is that the users are too focused on economic considerations and ignore the cost-effectiveness of products and the necessity of application. However, this situation is gradually changing.
Information from the National Grid shows that the use of special wires by the State Grid has increased significantly. The total amount of tenders for special wire of State Grid Group increased by 439.41% year-on-year in 2011 and 2010. The total tenders for the second batch of special wire of State Grid increased by 82.35% compared with the same period of last year in 2011. The total bid for local special wires in the first quarter of 2011 and the first quarter of 2010 increased 274.77% year-on-year, and the amount of successful bids increased by 196.62% year-on-year.
In many projects of the State Grid and China Southern Power Grid, Shanghai Zhongtian Aluminum Wire Co., Ltd. and Jiangdong Hardware Co., Ltd., which belong to Zhongtian Technology Group, actively cooperate with China Electric Power Research Institute, related transmission and transformation engineering companies and related design institutes. Fully leveraging the expertise of all parties, it has carried out a large number of effective research and experimental work in key technology fields, and has achieved important phased results and provided system solutions. Participate in the implementation of scientific research and engineering application of large-section conductors, grasp the key to the construction of world-class power transmission and transformation projects, and fully serve the construction of power grid projects.
The Institute of Special Wires of Zhongtian Science and Technology Research Institute is uniting with Baosteel, Shanghai Cable Research Institute, Shanghai Jiaotong University and other organizations to organize scientific research teams to strengthen independent innovation and continuously improve the technological content from new materials, new technologies, new processes, and new structures to adapt to special wires. In the future, the product will be used in a wider range of applications, and strives to achieve high-efficiency in resource allocation of special wires, serialization of production and manufacturing, and standardization of key technologies.
Polycrystalline sillicon (also called: polysilicon, poly crystal, poly-Si or also: multi-Si, mc-Si) are manufactured from cast square ingots, produced by cooling and solidifying molten silicon. The liquid silicon is poured into blocks which are cut into thin plates. The solidification of the material results into cells that contain many crystals, making the surface of the poly-Si/ mc-Si cell less perfect than its mono-Si counterpart. Due to these defects, polycrystalline cells absorb less solar energy, produce consequently less electricity and are thus less efficient than monocrystalline silicon (mono-Si) cells. Due to their slightly lower efficiency, poly-Si/ mc-Si cells are conventionally a bit larger, resulting in comparably larger PV modules, too. This factor has to be considered if space is limited. Nevertheless, the advantage of poly-Si/ mc-Si cells is that they are easier and thus cheaper to produce.
Poly Solar Cell,Solar Photovoltaic Cell,Most Efficient Solar Cell,Polycrystalline Solar Cells
Wuxi Sunket New Energy Technology Co.,Ltd , https://www.sunketsolar.com