Switzerland, Zurich: ABB has won orders worth over $300 million for critical power technologies to enable two new ultra-high-voltage direct current (UHVDC) power transmission links.
As part of the contact, ABB will supply HVDC converters, converter transformers and components, capacitors and filters, and high voltage circuit breakers to facilitate the efficient and reliable long distance transmission of electricity.
Converter transformers for the two projects will serve as the vital interface between the AC network (750 kV) and the DC links (800 kV). By using 800 kV UHVDC links, the transmission losses can be reduced significantly.
The two 800 kV links will each have the capacity to transmit 8,000 MW of wind and thermal power from Shanxi to Nanjing and from Jiuquan to Hunan – enough electricity to meet the needs of 26 million consumers based on average national consumption.
The Jiuquan to Hunan project is the world’s and China’s second 800 kV UHVDC to 750 kV UHV alternating current connection.