National grid led the successful development of the world `s largest Capacity for flow valve

Recently , the first ±800KV thyristor valve 6inches of the world has passed the type test ahead 5 months time than plan , various of parameters index have meet or exceed the technical requirements , That marks the extra-high voltage direct current transmission technology achieved breakthrough in China , the largest capacity of converter valve development effort achieved success in the world . Converter valve is the core equipment of the HVDC project , the successful development of converter valve was using the newly developed 6 inches , 8500 voltage , 4000 amps high power thyristor devices and new structural design , rated voltage is 800KV , rated current is 4000 amps , single 12 fluctuation converter circulationcapacity of 180 kilowatts , It is the largest converter valves in the world , on behalf of the top level of direct current transmission technology in the world , the converter valve is leading the development of State Grid Corporation , ABB company provide technical support , the mutual cooperation finished that , It will be used for extra high-voltage direct current demonstration project–xiangjia dam-Shanghai±800KV direct current demonstration project fengxian converter station project , the converter valve successful development , fully proved 800KV , 7 million kilowatts grade 6 inches , the feasibility of thyristor circulation technical route , to follow-up the higher voltage level, greater transmission capacity of exrea high-voltage direct current transmission project settled a solid foundation . It will greatly promote the extra high-voltage direct current transmission technology development and applications of the world .