ZTT(SH:600522) Zhong Guo Neng Yuan Wang·2026-01-19 01:04Group 1 - The Guangdong Electric Power Grid Yangjiang Sanshan Island offshore wind power flexible direct current transmission project is the world's first ultra-large-scale integrated offshore and onshore ultra-high voltage flexible direct current transmission project, with a planned total installed capacity of 2GW and a total length of 116.5 kilometers for the submarine cable [3] - The project is located in the South China Sea, an area prone to typhoons and complex sea conditions, which poses extreme challenges to the electrical performance, mechanical strength, and environmental resistance of the submarine cable [3] - Zhongtian Technology has made significant advancements in key technologies for ±500kV direct current submarine cables, overcoming global challenges related to space charge accumulation and electric field distribution control under high direct current voltage [3] Group 2 - Zhongtian Technology has successfully developed key technologies for various voltage levels of direct current submarine cables, including ±160kV, ±200kV, ±320kV, and ±400kV, and has supplied the first ±400kV flexible direct current offshore wind project in Asia in 2021 [3] - The company plans to focus on high-capacity, long-distance, and highly reliable offshore transmission technology needs during the 14th Five-Year Plan, continuing to invest in research and development in core areas such as insulation materials, system design, and intelligent operation and maintenance [5] - Zhongtian Technology aims to build a comprehensive solution capability for direct current submarine cables, covering survey design, product manufacturing, offshore construction, and intelligent operation and maintenance [5]