China's first 220 kV high-voltage submarine cable completed production to fill a number of technical gaps

Recently, according to the news of China Three Gorges Corporation, the 220 kV high-voltage photoelectric composite submarine cable of the Three Gorges New Energy Jiangsu Xiangshui offshore wind power project has recently been
produced in Jiangsu Nantong Zhongtian Technology Submarine Cable Co.
, Ltd.
It is understood that this submarine cable is currently the three-core AC high-voltage submarine cable with the highest voltage level, the largest length and the most optical fiber in China, filling a number of technical gaps
in domestic high-voltage submarine cables.

According to reports, the total length of this submarine cable is about 12.
9 kilometers, which has unique advantages
in terms of structure and economic benefits.
In terms of structure, the split-phase sheath of this submarine cable is all made of semi-conductive materials, which can effectively ensure the grounding of the large length of the submarine cable and reduce the induced voltage
of the sheath.
The cable void of the submarine cable is filled by a combination of high-strength molded filling strip and filling rope to ensure the roundness of
the product.

In terms of economic benefits, the three-core AC high-voltage submarine cable can reduce the submarine routing area, reduce the loss of products and transmission, and the cost is only 50% of similar foreign products, and the related transportation costs, operation and maintenance costs are also greatly reduced, which has a positive impact
on improving the economic benefits of Xiangshui offshore wind power projects.