July 6, with the completion of the AC-DC test between the valve terminals, the ± 800kV / 5000MW UHVDC converter valve independently developed by the enterprise owned by China West Electric Group successfully passed the insulation test And run the test, the indicators meet the IEC62501 requirements, which marks the successful development of the world's highest voltage level, the largest capacity of UHVDC flexible DC transmission valve.
UHVDC flexible DC converter valve
The product development relies on the Southern Power Grid Research Institute led the national key project "high-voltage high-capacity flexible DC transmission key technology research and engineering demonstration application."
As the responsible unit for developing UHVDC converter valve, China XD Group actively promoted R & D work and conducted comprehensive research in system simulation, power module development and valve tower design to solve the problems of low loss and high power cycle life, UHV converter valve anti-electromagnetic interference, converter valve seismic and cooling, multi-physics field strong coupling of the valve in the compact design of autonomous technology and other technical problems.
UHVDC flexible DC converter valve
And formed a number of key technologies, the final self-developed flexible DC transmission converter valve to complete all types of tests, and adopted the national high-voltage electrical quality supervision and inspection center to witness.
The voltage level and capacity of the product have hit a new high in the world. Following the world's first multi-terminal flexible HVDC transmission project - the ± 160kV multi-terminal flexible DC transmission project in South Australia and the world's largest operating voltage of ± 350kV / After 1000 MW Yunnan Luxi flexible DC back-to-back project, China XD Group made another breakthrough in the development of flexible DC transmission valve, marking that the development level of the flexible DC transmission valve of China XD Group has reached the level of the world Leading.
The advent of this product has promoted the progress of our country's flexible DC transmission technology and further strengthened our country's international leading position in this field.
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