Power Grid

26 Sep 2020

Landmark Transmission Project for China Offshore Wind Turbine

26 Sep 2020  by   

One of China’s largest offshore 8MW wind turbines has been connected to an eco-friendly power transmission system.

It is also believed to be the first time that a wind turbine generator has run on 66 kilovolt in China.

The transmission system has been installed by Siemens Energy and comprises a sulfur hexafluoride-free gas-insulated high-voltage switchgear called 8VM1 Blue GIS, and a liquid-immersed distribution transformer with ester fluid.

The system is part of a demonstration project established by Shanghai Electric at Shantou Haojiang onshore Industrial Park on the east coast of Guangdong in southern China.

“The growing power demand requires a new generation of windpower plants equipped with innovative technologies,” said Beatrix Natter, executive vice-president of transmission at Siemens Energy.

“Our SF6-free switchgear and our synthetic-ester transformer are contributing to the concept of an integrated clean energy solution.”

She added that 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 said in a statement that the technology “utilizes vacuum interrupters for switching functions and clean air as the insulation medium, representing an environmentally-friendly alternative to the potentially climate-harming insulating gas SF6.”

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