Transmission lines are the carriers and channels of power transmission, which are divided into overhead transmission lines and cable lines. The report according to the content is divided into line design, line construction, line operation and maintenance, new materials and new equipment four topics.

(Source: China Electrical Engineering Society WeChat ID: csee-weixin)

In the topic of circuit design, the author summarizes the recent achievements of China in UHV AC and DC transmission technology, large-span transmission line technology, multi-circuit transmission technology in the same tower, new wire technology, new tower structure, new tower foundation and flexible DC transmission technology , Power cable technology, the latest standards and engineering practice.

In the topic of construction of the line, the latest standards and engineering practice of several new technologies in the group tower, the display technology of split wires, the construction technology of important cross-over construction, the technology of cableway transportation, and the technology of large- .

In line with the topic of line operation and maintenance, the latest standards and engineering practice in China in terms of line inspection technology, galloping monitoring and control technology, anti-icing and deicing technology for transmission lines, and early warning and prevention technologies for geological disasters are summarized.

In the topic of new materials and new equipment, the latest standards and engineering practices in recent years in our country are summarized in the aspects of new wire materials, new tower materials, large tonnage composite insulators and new line construction equipment.

Through the above summary, it is pointed out that at present China has made positive progress in transmission line design, line construction, line operation and maintenance, and new material and new equipment. China has made major breakthroughs in the localization of its core technologies and key equipment and has implemented a number of technologies In the world's leading level. In the future, with the launch of the global energy Internet project, transmission line projects will face a variety of new extreme environmental challenges. At the same time, the requirements on the economy, leanness and environmental protection of transmission line projects will also continue to increase. Therefore, we must continue to vigorously promote the development and innovation of related technologies in transmission lines.

Finally, some suggestions on the development of transmission line expertise are given: setting up a sense of innovation, keeping a close eye on key issues facing the actual project of the power grid, speeding up the training and stocking of qualified personnel, strengthening investment in scientific research funds and research hardware conditions, promoting interdisciplinary, Cross-disciplinary cooperation to comprehensively promote the relevant technical innovation of transmission line professional will lay a solid technical foundation for the protection of transmission line construction and safe operation.

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