Analysis Of Submarine Cable Development Status And Prospect

Submarine cable industry market status analysis

The offshore wind power cable is mainly used to transmit the electricity generated by the wind turbine to the land. Submarine cables are cables laid on the seabed, including submarine communication cables and submarine power cables, which can be further divided into AC submarine cables, flexible DC submarine cables, umbilical cables, dynamic submarine cables, submarine optical cables, and other categories. The submarine power cable is specially designed to transport AC or DC current in the seabed cable; the type of transmission current depends on the capacity, length, and cost of the ocean transmission line. It can be used to connect the smart grid, for islands, offshore platforms, submarine observation stations, and other power supplies, or the electricity generated by the sea breeze power generation device to the land substation.

According to the different roles, offshore wind power submarine cables can be divided into array submarine cables and send out submarine cables. The array submarine cable is mainly used to collect the electric energy emitted by the wind turbine and transmit it to the offshore booster station. The current mainstream voltage level is 35kV and is developing to 66kV. The submarine cable is responsible for transmitting the boosted electric energy to the land centralized control center. The current mainstream voltage level is 220kV, and it is developing to 330kV and 500kV.

From the perspective of industry competition, due to the long use time and complex environment, customers have high requirements for quality and have high requirements for the production technology, product certification, and performance endorsement of submarine cable enterprises.

From the performance point of view, the submarine cable needs to be laid on the bottom by a special laying vessel, so the submarine cable has high water resistance, mechanical properties, and corrosion resistance. The structural layer number of the submarine cable is more complex than that of the land cable, removing the basic conductor and insulation layer, shielding layer, and adding the water-blocking layer, sheath, lining, armor layer, etc.

In addition, the submarine cable unit capacity investment is high, and the dock, tower, construction qualification, cable vessel, capacity location, and so on have built high barriers in the industry.

Submarine cable industry market prospect trend analysis

Submarine cable is widely used in the field of marine resource development and scientific research and is the "major artery" of marine energy and information transmission. Its long-term operation in the complex underwater environment, with high technical requirements, construction and maintenance difficulties, and other characteristics, is known as the photoelectric transmission field "pyramid spire" industry.

In recent years, with the rapid development of all fields of the world marine economy, enterprises have continued to increase technology research and development and gradually complete the core technology breakthrough of submarine cable. If the enterprise wants to seize the opportunity, it needs to occupy a large market share in the international submarine cable market with localization and cost advantages and participate in the international market competition with good product quality and high cost performance of some products.