HVDC electricity transmission Thyristor

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valve hall containing thyristor valve stacks used long-distance transmission of power manitoba hydro dams


since modern thyristors can switch power on scale of megawatts, thyristor valves have become heart of high-voltage direct current (hvdc) conversion either or alternating current. in realm of , other high-power applications, both electrically triggered (ett) , light-triggered (ltt) thyristors still primary choice. valves arranged in stacks suspended ceiling of transmission building called valve hall. thyristors arranged diode bridge circuit , reduce harmonics connected in series form 12-pulse converter. each thyristor cooled deionized water, , entire arrangement becomes 1 of multiple identical modules forming layer in multilayer valve stack called quadruple valve. 3 such stacks typically mounted on floor or hung ceiling of valve hall of long-distance transmission facility.








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