Siemens Energy commissions eco-friendly power transmission system in China

• 3 years ago (2020-11-03)
• David Flin

Asia 848 Transmission 181

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Siemens Energy has commissioned an eco-friendly power transmission system to complement one of China’s largest offshore 8 MW wind turbines. The system consists of a SF6-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 demonstration 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 kV in China. The 8VM1 Blue GIS was specifically developed to enable higher voltages in wind turbines and is also the first Blue GIS operating in China. It utilises vacuum interrupters for switching functions and “clean air” as the insulation medium (industrially purified air) as an environmentally more friendly alternative to the insulating gas SF6. The 8VM1 Blue GIS can be installed inside a wind turbine or a transition piece.

The FITformer REN transformer was developed to operate at 66 kV for wind turbine applications. The 8.8 MVA transformer is filled with ester biodegradable insulation fluid, and environmentally friendly alternative to conventional mineral oil.

Beatrix Natter, Executive Vice President Transmission at Siemens Energy, said: “The growing power demand requires a new generation of wind power plants equipped with innovative technologies. Our SF6-free switchgear and our synthetic-ester transformer are contributing to the concept of an integrated clean energy solution.”