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A few days ago, according to CRRC Zhuzhou Electric Locomotive Research Institute Co.
, Ltd.
(hereinafter referred to as "CRRC Zhuzhou Institute"), the WT3300 wind turbine developed by the company and the first domestic onshore application box variable overhead structure wind turbine was successfully connected to the grid
in Yunnan Huomiliang Wind Farm.
Traditional wind turbines use out-of-tower box transformers, which are mainly installed on the ground near the wind turbine, and the generator
installed in the nacelle on the top of the wind turbine is connected by a transmission cable.
However, as wind turbines gradually become larger, tower heights gradually increase, and the distance between transformers and generators increases
.
The unit integrates the original ground box transformer into the nacelle module, and the step-up transformer is installed at the tail of the nacelle at the top of the fan, and the high-voltage switchgear located at the base of the tower is formed into a step-up system
.
It can not only eliminate the underground armored cables of the box change foundation and box change to the unit in the traditional scheme, but also use a 35kV medium voltage cable in the tower instead of the traditional multiple low-voltage 690V cables
.
This change can save up to hundreds of thousands of costs for a single machine, reduce considerable line losses, and reduce the amount
of cable laying operations of wind turbines.
In addition, because the step-up transformer is installed on the top of the fan and the transformer is integrated in the nacelle, it reduces man-made damage, blade ice falling, waterlogging and flooding, wind and sand erosion and other problems, which will save the difficulty and cost of later operation and maintenance.
A few days ago, according to CRRC Zhuzhou Electric Locomotive Research Institute Co.
, Ltd.
(hereinafter referred to as "CRRC Zhuzhou Institute"), the WT3300 wind turbine developed by the company and the first domestic onshore application box variable overhead structure wind turbine was successfully connected to the grid
in Yunnan Huomiliang Wind Farm.
Traditional wind turbines use out-of-tower box transformers, which are mainly installed on the ground near the wind turbine, and the generator
installed in the nacelle on the top of the wind turbine is connected by a transmission cable.
However, as wind turbines gradually become larger, tower heights gradually increase, and the distance between transformers and generators increases
.
The unit integrates the original ground box transformer into the nacelle module, and the step-up transformer is installed at the tail of the nacelle at the top of the fan, and the high-voltage switchgear located at the base of the tower is formed into a step-up system
.
It can not only eliminate the underground armored cables of the box change foundation and box change to the unit in the traditional scheme, but also use a 35kV medium voltage cable in the tower instead of the traditional multiple low-voltage 690V cables
.
This change can save up to hundreds of thousands of costs for a single machine, reduce considerable line losses, and reduce the amount
of cable laying operations of wind turbines.
In addition, because the step-up transformer is installed on the top of the fan and the transformer is integrated in the nacelle, it reduces man-made damage, blade ice falling, waterlogging and flooding, wind and sand erosion and other problems, which will save the difficulty and cost of later operation and maintenance.
