Need to see the submarine power cable correctly

In recent years, submarine power cables have been hyped up as a new category of "special" and "high-end" cables.

People in the industry all know that it is not easy to launch a submarine power cable project. It requires not only hundreds of millions of dollars in huge funds and specialized technical equipment, but also requires specialized technical personnel. The continuous production of tens of kilometers long entire cables requires sophisticated equipment. The factory is also subject to geographical restrictions. It must be located on the seashore or on the edge of the river. It must also have large-length cable product storage facilities and shipping terminals.

At present, domestic manufacturers that are producing submarine power cables are large enterprises with strong capabilities. For example, companies such as Han Cable, Ningbo Dongfang, Shangshang Fujikura, Hengtong High Voltage, etc., are located on the seashore or on the waterfront and have strong economic and technological strength. Business. Some enterprises with relatively weak technological and economic strength are also taking advantage of the launching of submarine power cables. However, a few years have passed and there is still no news left so far.

At present, only 220kV optical composite submarine cables can be manufactured in China, and 500kV submarine cables cannot be manufactured yet, and they must be imported. Over 130 kilometers of 500kV and 800mm2 submarine power cables used in the Hainan Province Qiongzhou Strait Interconnection Project are imported paper-insulated submarine cables. Similarly, more than 150 kilometers of 500 kV cross-linked cables for transmission projects at the Shanghai World Expo are also imported goods.

Most media and forum reporters described submarine power cables as "high-end products." However, they did not clearly explain where and how difficult "high"s are, so that some unfamiliar companies fell into blindness and even comforted themselves. .

Therefore, the most important thing at present is to save some enterprises from the state of self-enchantment and spiritual masturbation and have a clear understanding of submarine power cables.