On April 13, the world's first large-length 500 kV cross-linked polyethylene fiber composite submarine cable was successfully tested by Jiangsu Hengtong High-voltage Submarine Cable Co., Ltd. through an expert group organized by the State Grid Corporation! This also signifies Hengtong. Become the industry's first cable manufacturer to complete this move!
Figure: Close up of a world record giant jumbo cable
It is understood that the tested submarine cable has no joints and it is 18.15 kilometers long. It is the world's first large-length 500kV cross-linked polyethylene optical composite submarine cable, creating the 'highest voltage level in the world and the longest single joint'. World Record. Test site, Zheng Hai, Director of Infrastructure Department, State Grid Zhejiang Electric Power Co., Ltd., Yang Liming, Chief Cable Specialist, State Grid Electric Power Research Institute, Qian Jianlin, Executive Director of Hengtong Group, Li Ziwei, CEO of Hengtong Power Industry Group, etc. Witness the birth of the new century records of the cable industry.
Image: Instant delivery on site
As the AC voltage on the withstand voltage test screen exceeded 580KV, the factory test of the 500 kV cross-linked polyethylene fiber composite submarine cable was successful.
Yang Liming, China's chief cable expert and professor-level senior engineer, said during the factory test that Hengtong broke the monopoly of large-scale ultra-high-voltage submarine cable technology by overseas cable giants and reflected the world-class level of manufacturing in China. It will be the development of China’s marine transmission technology. To great impetus.
Qian Jianlin said at the scene that good winds depended on strength and sailed at the time. As an industry-leading service provider of energy interconnection system solutions, Hengtong has long focused on technology research and development and system integration in the field of marine power and communication transmission, with reliability and high Cost-effective design, production and engineering implementation as a whole solution, leading the development of the marine economy era. This trial has accelerated the development of the Haitong submarine cable technology, promoted the development of marine transmission technology, and promoted Hengtong’s marine industry to the global high end. Great significance.
In an interview with the media, Li Ziwei stated that this project construction will accelerate the technical breakthroughs in China's submarine cables and ultra-high cross-over towers, solve a series of construction and installation problems, and make significant contributions to China’s power energy industry and promote the transmission of marine power. Technological development, the construction of the Internet of Energy is of great significance. This submarine cable was independently developed by Jiangsu Hengtong High-voltage Submarine Cable Co., Ltd. and will be used in the 500 kV continental connection project between Ningbo, Zhejiang and Zhoushan.
It is reported that the world’s longest single-joint 500kV cross-linked polyethylene optical fiber composite submarine cable that has been delivered this time overcomes difficulties in the control technology of insulation pressure, equipment stability technology and other difficulties, and controls the performance of insulating materials in the best condition. , A major breakthrough has been made in the twisting and water-blocking performance of large-section conductors, and the compressive strength and large-capacity transmission capacity of submarine cables have been improved. This has broken the monopoly of overseas submarine cable giants on large-length EHV submarine cable technology. The world level made in China will play a huge role in promoting the development of China's marine transmission technology.