Special wires and cables tend to be standardized
Special wires and cables in the power system are developing rapidly, and more than 100,000 kilometers of special optical cable lines are put into construction every year. The UHV AC and DC demonstration projects all use fiber-optic composite overhead ground wires. The performance and quality of special wires and cables are directly related to the safe and stable operation of the power grid. However, due to the relatively short application time of special wire and cable products in my country, the standard quantity and type can not meet the needs of current production and operation, and there are still shortcomings in the standardization of special wire and cable products in China.
Special wires and cables and their installation accessories (hardware, joint boxes, etc.) have not yet formed a complete standardized system from customized special cable production, design, testing and testing to project bidding, construction, and acceptance. The types of special wires and cables in China are complex, and the models of special wires and cables for each line and even each section of the line under the same voltage level are different, and there is no relatively uniform type spectrum. This is not conducive to the design, production, maintenance and deployment of the project, resulting in higher design, production and engineering costs, and also causing inconvenience and waste in project construction.
The UHV AC and DC demonstration lines have been and will be put into operation. On the basis of actual operation, corresponding design, production and operation standards should be formulated for future UHV projects. The investment in the field of basic research on special wires and cables should be increased to meet the needs of new technologies, new varieties, new products and new problems of special wires and cables, and to meet the needs of the rapid development of special wires and cables. Opportunity to conduct in-depth research on various properties and application technologies of special wires and cables, form new research results in the field of special wires and cables into corresponding standards as soon as possible, and gradually increase my country's international influence in the field of standardization of special wires and cables, so that my country's standardization system ranks among the top world-leading