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Zhoushan 500kV network power transmission and transformation project operation



On January 15, zhoushan 500kV network power transmission and transformation project put into operation.This is the largest and most technically difficult cross-sea interconnected power transmission and transformation project in the history of China's electric power construction. It has set 14 world records in the construction of the world's highest transmission tower and the laying of the world's first 500kV cross-linked polyethylene sea cable.

The two 380m transmission towers newly built in this project adopt the same tower mixed voltage four-circuit line, which has broken ten world records such as height, weight of transmission tower and base side length of high tower.The world's first 500kV cross-linked polyethylene sea cable installed in the project is independently developed and produced, and its application relieves China's dependence on imported 500kV sea cable.The construction ship "qifan 9", which is used in the construction of sea cable, is an advanced sea cable construction ship independently designed and produced in China, providing reliable equipment and technical support for sea cable laying.The newly built weiyuan substation is the first 500kV substation built on the beach in China, which indicates that state grid corporation of China has mastered the key technology of building 500kV substation on the beach.A series of major breakthroughs show that China has mastered the advanced Marine power transmission technology to "make in China" to solve the world's problems.