What do you get if you draw a hexagon on the sea? This "national project" is extraordinary!

What do you get if you draw a hexagon on the sea? This holiday, I will take you to the eastern waters of the motherland to check in a special "attraction", China's first wave-resistant floating photovoltaic platform, the " Yellow Sea No. 1 ", known as the "hexagonal warrior".

my country's first wave-resistant

Floating offshore photovoltaic platform

China's first wave-resistant floating photovoltaic platform "Huanghai No. 1" can be said to be a veritable "hexagonal warrior". Why is this national project hexagonal? Compared with quadrilaterals and triangles, hexagons can lay more photovoltaic panels. Moreover, a hexagon is just a unit. In the future, many hexagons will be spliced ​​together, like a huge honeycomb, with excellent stability.

How do offshore photovoltaic platforms resist waves? The answer lies in the "posture" of the photovoltaic panels. The biggest difference from photovoltaic power stations on land is that the photovoltaic panels on this platform are all "lying flat". This design can reduce wind resistance and allow the platform to rise and fall with the waves at sea, converting the sunlight at sea into green electricity to the greatest extent.

In addition, this photovoltaic platform has a trick to resist waves. As you can see from below, the platform is about 7.5 meters from the sea surface, so that waves and sea breezes can pass under the platform almost unimpeded. In addition, near the sea surface, there are dozens of orange-red buoys in a large circle to provide buoyancy for the entire platform.

Uncovering the secrets of how the "Yellow Sea No. 1" chases light to the sea

What other special skills does this “hexagonal warrior” have?

The water depth of the sea area where "Yellow Sea No. 1" is over 30 meters. Therefore, "Yellow Sea No. 1" is the deepest floating offshore photovoltaic platform currently built in China .

To ensure that it can "stand firm" in the rough sea, the platform uses 6 anchor chains, each about 265 meters long and weighing 55 tons, to "lock" the platform firmly to the seabed while increasing its height. It can withstand severe sea conditions that occur once every 50 years and waves up to 10 meters high. It is currently the floating offshore photovoltaic platform with the highest wave resistance in China .

It is understood that the operation area of ​​the "Huanghai No. 1" photovoltaic platform is located in the Huaneng Haiyang Wind Farm on the Shandong Peninsula. There are many wind turbines around, and the photovoltaic platform shares cables with these wind turbines. This complementary model of wind power and photovoltaics can better ensure the stability and security of the power grid.

Nan Mingjun, project manager of Huaneng's "Huanghai No. 1" floating offshore photovoltaic platform:

The project adopts the wind and solar co-development model, absorbing wind and solar energy simultaneously . The complementary wind and solar power can make power generation more stable. Power transmission sharing and joint operation and maintenance can reduce costs. More importantly, it can improve the utilization rate of the ocean, optimize the energy structure, and further promote the realization of the "dual carbon" goal.

Now, the main body of the platform has been installed in the Yellow Sea wind farm in the southern part of Shandong Peninsula, and is undergoing the final equipment commissioning before commissioning. Next, the platform will conduct a one-year experiment in the Huaneng Peninsula South No. 4 offshore wind farm to comprehensively collect and deeply analyze key offshore data.

In the future, the "hexagonal" platform will maximize the utilization of ocean area through splicing and combination , provide a new technical route for the large-scale development of deep-sea photovoltaics, and continuously promote the intensive and efficient development and utilization of marine energy resources.

Planning and production

Source: CCTV-channel 1 WeChat official account (ID: CCTV-channel1) Comprehensive "News Live Room"

Editor: He Tong

Proofread by Xu Lailinlin