ABB supports China’s UHVDC power transmission projects

Provides UHVDC technology and key equipment for the Jinping-Sunan power link

Beijing, May 3, 2011 –ABB, the Top 500 Company and the inventor of High Voltage Direct Current (HVDC) technology, will closely cooperate with State Grid Corporation of China (SGCC) and local partners to provide key technology for SGCC’s Jinping-Sunan 800 kilovolt (kV) Ultra High Voltage Direct Current (UHVDC) power transmission project. ABB will also supply key components for both 800 kV UHVDC converter stations, including 800 kV UHVDC transformers, converter valves, the control and protection system and DC yard equipment. ABB’s help will ensure efficient and reliable power transmission over the line.

Claudio Facchin, President of ABB China said, “There are many challenges involved in building the Jinping-Sunan 800 kV UHVDC power transmission project. The project has very stringent technical requirements. The cooperation reflects the continued confidence of SGCC in ABB’s technologies and project execution experiences. We have a long track record in China and are very pleased to continue supporting the country in its efforts to strengthen the national power infrastructure and minimize environmental impact.”

The 2,090 km Jinping-Sunan power link will transport clean hydropower from Sichuan province in western China to the highly industrialized coastal area in the eastern province of Jiangsu. The power link uses the 800kV UHVDC power transmission technology, the highest available direct current voltage levels. The power line, at a rated capacity of 7,200 megawatts (MW), is expected to be energized in 2013.

HVDC power transmission converts the three-phase AC power into DC power with converter station, then transmits the DC power to the next converter station through DC power line, and converts the DC power back to three-phase AC power for distribution. It is the most advanced technology for long distance bulk power transmission at low losses and in an efficient, economic and environmentally friendly way. As a long distance power transmission technology, HVDC is ideal for transmitting power from remote area to centers of power consumption. It is particularly suitable for large countries like China and India.

ABB is the technology inventor and market leader of HVDC power transmission area. ABB has constructed over 50% of HVDC projects worldwide. UHVDC is a technological development of HVDC, and is the biggest leap in transmission capacity and efficiency in more than two decades. Power transmission at ultrahigh voltage levels has considerable advantages for the environment as it enables more efficient use of renewable energy sources and reduces dependency on fossil fuels.

ABB keeps developing and upgrading its UHVDC technology in order to address the demand of the Chinese market. In China, ABB has participated in the construction of many UHVDC power lines, including the Xiangjiaba-Shanghai and Nuozhadu-Guangdong transmission systems. The Xiangjiaba-Shanghai UHVDC power line, energized in July 2010, is the world’s longest UHVDC power line in operation at the highest voltage level and with the largest transmission capacity.

Today, ABB UHVDC technology has been exported from China to the world. This March, ABB announced that it will support the construction of the North-East Agra HUVDC transmission project in India. The power link operating at 800 kV will have a record capacity of 8,000 MW. When operating at full capacity, the link will be able to supply enough electricity to serve 90 million people based on average national consumption levels.

SGCC is the country’s leading power utility responsible for the construction and operation of a vast power network that covers 26 provinces, autonomous regions and municipalities across a service area that represents 88 percent of the national territory.

ABB ( is a leader in power and automation technologies that enable utility and industry customers to improve their performance while lowering environmental impact. The ABB Group of companies operates in around 100 countries and employs about 124,000 people. ABB has a full range of business activities in China, including R&D, manufacturing, sales and services, with 16,300 employees, 31 local companies, and an extensive sales and service network across 80 cities.

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