October 23, at the third party quality supervision and inspection center witnessed, with the converter valve lightning impulse withstand test completed, China West Power Group affiliated electric power system independent development of ± 535 kV / 3000 MW flexible DC converter valve through the insulation test and run the test, the indicators meet the IEC62501 standard.
Flexible DC converter valve as a DC transmission system in the AC and DC conversion hub, called the heart of flexible DC transmission system. The Division to Zhangbei engineering application requirements as the goal, from the system analysis, core equipment development, engineering design Depth analysis of the converter valve to solve the nine-stage seismic design, high voltage high current resistance to strong electromagnetic interference, with DC circuit breaker DC system fault crossing and isolation and other problems, to achieve a low failure rate of the converter valve reliable operation. Division of self-developed flexible DC converter valve can be applied to the world's first network with the characteristics of the DC demonstration project - Zhangbei renewable energy flexible DC power grid demonstration project.
On the basis of the development of modern power electronic technology, the electric power system has successfully developed the flexible DC converter valve of ± 535 kV / 3000 MW, which has developed flexible DC commutation Valve applications, to promote the flexible DC transmission technology advances, to consolidate the West in the field of international leading position.