• Categories:Industry News
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• Time of issue:2020-02-15
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(Summary description)Ohm's law, the classical electrician theory, shows that there are two ways to improve the DC transmission capacity: one is to increase the transmission voltage, and the other is to increase the transmission current.

The Jinsu Project opened six-splitting 900 square millimeter large cross-section conductors first, positioning the conductor selection of China 's DC transmission technology at a new height, and laying the foundation for China 's DC power transmission to achieve "boost voltage and current".

Technical staff of the State Grid Corporation's DC company said that the application of 900 square millimeters of large-section wire needs to overcome technical difficulties in construction and exhibition. "Like the traditional artificial display with tension display in the early 1980s, large-section wire display is also a revolution in wire display technology."

With the increase of the conductor cross section, the increase in the number of splits, and the increase in the breaking force of the conductor, the 900 square millimeter large-section conductor has placed higher requirements on the existing conductor deployment technology, equipment, quality, and construction safety and efficiency. "Limited by the manufacturing technology of the equipment itself and the safety of construction, it is not possible to simply increase the rated output of the wire spreading equipment while the cross-section of the wire is increasing. To this end, through hard work and exploration, we formed a The new technology of 3 "," two pulls, 6 "and other large section conductors is laid out, which provides favorable technical support for the application of large section conductors." State Grid Corporation DC company technical staff said.

The new technology of "one pull 3" and "two pull 6" wire display is a major breakthrough in wire tension display technology. It effectively solves the problem of using existing equipment to enlarge the cross-section of multi-split conductors, which not only reduces the construction safety risk, but also improves the construction efficiency, quality and safety of multi-split conductors.