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ABB bolsters Chinese grid

$300m deal to bring 1100kV ultra-high-voltage DC link to Asian country

ABB bolsters Chinese grid image

ABB has won orders worth more than $300m for the 1100kV Changji-Guquan ultra-high-voltage (UHV) DC transmission link in China, which will help connect remote renewables to the country's grid.

The company said the link will connect Xinjiang region in northwest China to Anhui province in the east of the country and will set a new world record in terms of voltage level, transmission capacity and distance.

It will be capable of transporting 12GW of electricity – a 50% increase in transmission capacity, compared with the 800kV UHVDC links currently in operation, ABB said.

ABB will supply converter transformers and components, such as bushings and tap changers.

It will also provide HVDC converter valves, DC circuit breakers, wall bushings and capacitors, as well as provide system design support.

ABB said each transformer weighs 800 tons and measures 32 metres in length.

The company said its transformer manufacturing and testing facility in Chongqing, as well as a local HVDC engineering and technology centre, will be involved in the delivery and execution of the project.

ABB power grids division president Claudio Facchin said: “China has major load centres in its eastern region, while a significant amount of its energy resources are in the west and northwest.

“The expansive geography and increased demand over the last decade have prompted the build-up of UHV capacity to transmit larger amounts of power over greater distances with minimum losses.”

Image: ABB

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