The 8VM1 Blue GIS was specifically developed to enable higher voltage levels in wind turbines and is also the first Blue GIS® operating in China.
Siemens Energy commissioned an eco-friendly power transmission system complementing one of China’s largest offshore eight-megawatt (MW) wind turbines. The system consists of a SF6 (sulfur hexafluoride)-free gas-insulated high-voltage switchgear (GIS) called 8VM1 Blue GIS and a liquid-immersed distribution transformer with ester fluid. It is part of a demo project by Shanghai Electric, located at Shantou Haojiang onshore Industrial Park on the east coast of Guangdong, South China.
The wind turbine generator is the first to run on 66 kilovolt (kV) in China. The 8VM1 Blue GIS was specifically developed to enable higher voltage levels in wind turbines and is also the first Blue GIS operating in China. It utilizes vacuum interrupters for switching functions and “clean air” as the insulation medium (industrially purified air) representing an environmentally friendly alternative to the potentially climate-harming insulating gas SF6. The 8VM1 Blue GIS can be installed inside a wind tower or a transition piece thanks to its wind turbine application adopted compact and lightweight design – even with clean air insulation.
