The construction of the 500-kilovolt(kv) ultra-high voltage submarine cable laid beneath the Zhoushan Strait located in east China's Zhejiang Province enters its final cablecasting stage and will be ready for operation in mid-June.
Linking the power grids between Zhoushan and Ningbo city in the province, the 17-kilometer cable is the first domestic-made 500kv submarine cable, and also the world's first 500kv cross-linked polyethylene insulated submarine cable.
Developed by China's State Grid Zhejiang Electric Power Co. and other research institutes and cable manufactures in the country, the construction of the cable stands for the top level of China's marine power transmission technology.
In additional to the submarine cable, the 500kv power transmission project also includes building two 380-meter-high power transmission towers in Zhoushan, the highest of their kind in the world.
The whole project will be completed and put into operation in mid-June. It will expand Zhoushan islands' transmission capacity by 3.3 times and provide stable green electricity to the region after it is put into operation.
Source:cctvplus
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