First 500kV/750MVA UPFC project by NR Technology

On December 19th 2017, NR successfully launched the commercial operation of the world’s first 500kV/750MVA Unified Power Flow Controller (UPFC) project, awarded by State Grid Corporation of China (SGCC).

This UPFC project is located in the southern part of Suzhou city, China. In the scope of supply, NR delivered all core equipment inclusing UPFC converter valves, valve cooling systems, thyristor bypass switches and electronic measurement transformers. The site commissioning was performed over one month, NR executed more than 190 comprehensive and strict test features. After installation and operation, the UPFC system contributes to control the power flow of Meimu 500 kV AC link, and consequently prevents overload and load shedding in the case of HVDC bi-pole blocking or N-1 operation mode. Meanwhile, it is also capable of compensating dynamic reactive power.

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