IEC TR 60919-1:20 20作为IEC TR 60919-1:20 20 RLV提供，其中包含国际标准及其红线版本，显示了与上一版本相比技术内容的所有变化。 IEC TR 60919-1:20 20(E)为高压直流(HVDC)系统的稳态性能要求提供了一般指南。它涉及利用由三相桥（双向）连接组成的12脉冲换流器单元的双端HVDC系统的稳态性能，但不包括多端HVDC输电系统。假设两个端子都使用晶闸管阀作为主半导体阀，并且在两个方向上具有功率流动能力。本文档中不考虑二极管阀。与上一版相比，此版本包括以下重大技术变更:-更新了图8和图20，增加了新的图18“LCC/VSC混合双极系统”； -补充了高压直流输电系统控制目标； -已经给出了关于HVDC系统控制结构的附加解释； -增加了关于高压直流输电系统保护的新子条款13.6。

IEC TR 60919-1:2020 is available as IEC TR 60919-1:2020 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC TR 60919-1:2020(E) 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, but it does not cover multi-terminal HVDC transmission systems. Both terminals are assumed to use thyristor valves as the main semiconductor valves and to have power flow capability in both directions. Diode valves are not considered in this document. This edition includes the following significant technical changes with respect to the previous edition:
- Figure 8 and Figure 20 have been updated, a new Figure 18 "LCC/VSC hybrid bipolar system" has been added;
- the HVDC system control objectives have been supplemented;
- additional explanations regarding the HVDC system control structure have been given;
- a new subclause 13.6 on HVDC system protection has been added.