Release Background: From 2025 to 2026, global offshore‑wind industry is fully shifting toward deep‑water floating platforms, as evidenced by multiple grid‑connected large‑scale floating wind projects across Europe and China’s southeast coastal areas.

Analysis of Core Technologies

Ultra‑high‑voltage Challenges for Dynamic Cables: Conventional subsea connectors are mostly designed for low‑voltage or medium‑voltage systems in the oil‑and‑gas sector. With the sharp increase in single‑unit power ratings of offshore wind turbines, the technical focus in 2026 falls on wet‑mate technologies rated from 36 kV to 66 kV and even higher voltage classes.


Hydraulic Pressure Balancing and Arc Suppression: Within high‑voltage AC and DC power grids, subsea wet‑mate connection performed remotely by ROVs in deep‑sea environments brings high risks of electric‑field distortion and dielectric breakdown. This paper elaborates on state‑of‑the‑art pressure‑compensated insulating oil‑chamber design. Specially‑formulated silicone oil displaces seawater at the moment of mating, and dynamically‑sealed insulating sliders enable arc‑free disconnection and re‑engagement.


Fatigue‑Resistant Dynamic Seals: Floating platforms undergo constant swinging induced by ocean waves. The connectors need to withstand millions of times of slight dynamic bending and shear loads. This paper evaluates the long‑term anti‑creep performance of new‑generation polymer composite materials (including PEEK and special fluororubber) for deep‑sea service released in 2026.