Performance of high-voltage direct current (HVDC) systems with line‑commutated converters - Steady-state conditions1 Scope This part of IEC 60919 provides general guidance on the steady state performance requirements of high voltage direct current (HVDC) systems. It concerns the steady state performance of two terminal HVDC systems utilizing 12 pulse converter units comprised of three phase bridge (double way) connections (see Figure 1), but it does not cover multi terminal HVDC transmission systems. Both terminals are assumed to use thyristor valves as the main

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