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DNV KEMA has announced that Electric Power Engineering Co. Ltd.'s (C-EPRI) self-developed prototype 320kV/1000MW, 1563A IGBT valves passed DNV KEMA's witness type test according to the IEC 62501 standard. DNV KEMA says the test results mark the success of this type of HVDC transmission technology with the highest voltage and power rating in the world, as well as represent an important step in the further development of super grids.

C-EPRI is a company wholly owned by the Smart Grid Research Institute (SGRI), a subsidiary of the State Grid Corporation of China (SGCC). C-EPRI is primarily involved in research, manufacturing and engineering of classic HVDC using line commutated converters and new-generation HVDC using voltage sourced converters.

The type tests were performed at the Power Electronic Lab of SGRI and included both operational and dielectric tests. The prototype passed all tests required by IEC 62501 (2009ed), which DNV KEMA says means C-EPRI becomes the first power electronics manufacturer with successfully type-tested 320kV, 1563A IGBT valves. All the tests were witnessed by DNV KEMA.

"Thanks to its great efforts in research and development, C-EPRI provides an effective solution for wind integration, in particular for large offshore wind farms with transmission distance of more than 50-100 km where an AC cable technology is not feasible," comments DNV KEMA’s Yanny Fu.





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