ABB equipment enables transmission of hydro power from southwest China

June 30, 2017 - Gas-insulated switchgear helps integrate renewable energy and strengthen power grids

Rich in hydro resources, the Southwest China region is embarking on a large development project to bring reliable power to the country’s mainload centers in the central and eastern regions. The Chongqing-Hubei HVDC Interconnection project, to be built by world’s largest utility company State Grid Corporation of China (SGCC) has kicked off construction in May 2017. The project will connect two major transmission systems from the Southwestern municipality of Chongqing and the Central province of Hubei that are currently operating independently.

ABB will design, supply and commission 550-kilovolt (kV) gas-insulated switchgear (GIS) at Longquan and Shanshuyuan converter stations. ABB’s GIS enables integration of renewable energy into the grid with minimized footprint, lifecycle costs and environmental impact. The project features 420 kV VSC technology that further helps to enhance the reliability and stability of power grids. It is expected to be operational in 2018.

“We are glad to support HVDC project with our GIS to strengthen power grids in the country,” said Giandomenico Rivetti, Managing Director of ABB’s High Voltage products business within the company’s Power Grids division. “Our GIS for HVDC technology is a key element of our Next Level strategy and will help expansive countries like China to reliably and efficiently transport increasing amounts of clean, renewable power over greater distances.”

In a power system, a switchgear controls and protects the network from all types of system faults that could occur, such as lightning strikes or short-circuits which that could potentially lead to network failure. The compact and metal encapsulated GIS can be safely operated in confined spaces and harsh environments. ABB pioneered high-voltage GIS in the mid-1960s and continues to drive the technology, offering a full range product portfolio with voltage levels from 72.5 kV to 1,200 kV.

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