Swiss power and automation group ABB has won an order worth $300m to supply power technology to two new ultra-high-voltage direct current (UHVDC) power transmission links in China.
Both the two 800kV links will transmit 8,000MW of wind and thermal power from Shanxi to Nanjing, and from Jiuquan to Hunan.
Under the deal, ABB will supply its advanced high-voltage direct current (HVDC) converters, converter transformers and components, capacitors and filters, and high-voltage circuit breakers.
The deal aims to facilitate efficient and reliable long distance transmission of electricity in China.
The two projects will have converter transformers that work as the vital interface between the AC network and the DC links.
The application used in the HVDC technology is capable of strengthening AC grids, and the transmission losses can be reduced with the help of 800kV UHVDC links.
The electricity supplied through the transmission lines is expected to meet the needs of 26 million consumers.
ABB power systems division president Claudio Facchin said: "These projects will help integrate more renewable energy and further strengthen China’s transmission grid.
"Technology and innovation are key differentiators for ABB, and a major pillar of our next level strategy, and ABB continues to be at the forefront of HVDC and transformer technology making projects like these feasible."
The Jiuquan to Hunan project is China’s second 800kV UHVDC to 750kV UHV alternating current (AC) connection, which expects to enhance the efficiency and capacity of long-distance UHV electricity delivery systems.
China delivered its first 800kV UHVDC alternating current connection from Lingzhou to Shaoxing.
ABB started the upgrading of HVDC to UHVDC transmission 60 years ago, and has received around 100 HVDC projects since then.