The submarine cable that winds its way from the North Sea to the Weizhou Island quietly traverses over coral reefs and marine protected areas, breaking the long-standing situation where the core materials of high-voltage submarine cables were largely dependent on imports. This has caused a huge stir both within and outside the industry.Exactly, the core component of this cable - cross-linked polyethylene insulation material - was previously monopolized by overseas suppliers, but now it has finally been marked with the "Made in China" label.
For a long time, there has been a pain point in the high-voltage submarine cable field: the core technology of insulation materials, which we have never been able to hold the discourse power over. It's like being choked in the throat, not suffocating, but always making people feel lacking in confidence.
This breakthrough means that in the 220-kilovolt three-core submarine cable field, we have truly achieved internal and external self-control from top to bottom, and the weakest link in the industrial chain has been completely solidified. An experienced veteran in the industry sighed: "Previously, we were most afraid of foreign supply cuts or sky-high price hikes. During negotiations, we couldn't even hold our backs straight. Now it's different. We finally have our own trump card in hand."
However, the strategic significance of this project goes far beyond the electricity demand of a single island. Anyone who is knowledgeable understands that for offshore wind power to achieve efficient grid connection, submarine cables are an indispensable "energy expressway". Only by firmly grasping the basic materials and laying technology of this road in our own hands can the development and grid connection of offshore wind power resources along the long coastlines of Guangdong and across the country have real guarantees.
What is even more touching is that this project not only has technical "hard power", but also contains "clever thinking" and reverence for marine ecology. The project team staged a meticulous operation that could be called "underwater micro-carving": using high-precision three-dimensional modeling technology for precise navigation, conducting directional drilling at a depth of 25 meters under the sea, allowing the cable to move quietly like a flexible dragon, crawling beneath the coral reef bed. This process reduced the disturbance to the original seabed strata by more than 85%.
In the opinion of Zhejiang Zhongjing Cable, it clearly indicates that in large-scale marine engineering projects in the future, it will not be producers that stand firm, but integrated service providers that can provide "high-end materials - customized products - comprehensive laying solutions".
This submarine cable has sent out a loud declaration to the world: In the era of advancing into the deep sea and developing the blue territory, China's engineering strength has already mastered exquisite skills, has a grand vision, and is treading a clear and firm path forward.
