Current status of carbon fiber composite cores for

Current situation of carbon fiber composite core of power conductor

in the 1990s, Japanese scholars studied using carbon fiber composite core instead of steel core with Mo content of 2% in the experiment, and developed aluminum strand with carbon fiber composite core. Carbon fiber composite core is a single or multiple mandrel made of carbon fiber as the central layer and glass fiber coating. Carbon fiber composite core conductor (ACCC) is a new concept conductor for overhead transmission line. It is made of carbon fiber composite core instead of the steel core in the traditional steel cored aluminum strand. It is an innovative application of composite materials in transmission conductors, which can save corridors%, and the expansion of lines can reduce half the land occupation area of new lines; Energy saving and consumption reduction. The annual reduction of power loss per kilometer of 220kV lines will reach about 200000 yuan; The wire conveying capacity is increased by about%

in 2003, CTC (composite technology company) in the United States launched the research conductor of ACCC (aluminum conductor composite core) composite composite composite core. Xia Genglai, vice governor of the innovation group, was the first to successfully implement the composite core conductor transmission line in the United States. There are 1 LCD experimental power and 9 peak experimental power lines (all single circuit) in European and American countries, and 16 lines in the United States; 2 lines in France; 1 line in Spain; The carbon fiber composite core conductor in Japan is mainly produced by Nippon Steel Co., Ltd. and has been tested on the 66kV transmission line of Miyagi branch of northeast electric power company in Japan. At present, India, Poland, Brazil and other countries are also actively developing carbon fiber composite core conductor technology. As the most potential market, India is promoting the application of composite core conductor transmission lines. China's Jiangsu Far East Cable Co., Ltd. introduced the composite core products of CTC company of the United States in 2005 to cooperate in the production of ACCC wires. More than 100 wires manufactured by CTC company of the United States have been hung and operated in many regions of China. In 2008, the carbon fiber composite core conductor project of Hebei Silicon Valley chemical company started construction in Yongnian County, Handan city

in September 2010, the science and technology project "development of carbon fiber composite core expansion conductor" undertaken by the Chinese Academy of electric power successfully passed the acceptance and has been put into trial operation on more than 50 lines. So far, carbon fiber composite core conductors have been successfully applied in several continents except African countries. At present, the application mileage of carbon fiber composite core in the world is more than 10000 kilometers, including more than 5000 kilometers in China. At this stage, the application of carbon fiber composite core conductor is mainly based on line capacity expansion and reconstruction, which has not been widely promoted in new lines. It mainly has the problems of safety, reliability, economic practicality and operation stability. How to further reduce the cost of carbon fiber composite conductor, and the method of safety and reliability evaluation in ACCC production, construction and operation need to be further studied

at present, the State Grid Corporation of China has formulated the promotion and application plan of ACCC during the 12th Five Year Plan period; Establish a project to carry out research on application technologies of ACCC, such as localization application technology, low-cost technology, aging and safety life assessment, nondestructive testing and line testing; Cetca and Shanghai Cable Research Institute have prepared relevant standards for carbon fiber composite conductors, and the manufacturer has built 158 special pultrusion production lines for CF cores, which has further strengthened industrial research and development and is gradually reducing product prices

improve weather resistance and increase dimensional stability; Note: the reprinted content is indicated with the source. The reprint is for the purpose of transmitting more information, and does not mean to agree with its views or confirm the authenticity of its content