IEC/TR 60919-1:20 0+A1:2013+A2:2017提供了高压直流输电系统稳态性能要求的一般指南。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。本报告不考虑二极管阀。与上一版相比，此版本包括以下重大技术变更: a)对每极多个12脉冲组的描述进行了改变，特别是对于大规模超高压直流(UHVDC)转换器布置；b)华盛顿的不同安排。包括平滑反应器； c)已经添加了描绘每个极点布置的两个12脉冲组的图。 该合并版本由第三版（2010年）、修正案1（2013年）和修正案2（2017年）组成。因此，除本出版物外，无需下令修订。

IEC/TR 60919-1:2010+A1:2013+A2:2017 provides general guidance on the steady-state performance requirements of 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 report. This edition includes the following significant technical changes with respect to the previous edition:
a) the changes have been made to the description of multi 12-pulse groups per pole, especially for a large scale ultra high-voltage direct current (UHVDC) converter arrangement;
b) the different arrangements of d.c. smoothing reactors have been included;
c) the figures depicting two 12-pulse groups per pole arrangement have been added.
This consolidated version consists of the third edition (2010), its amendment 1 (2013) and its amendment 2 (2017). Therefore, no need to order amendment in addition to this publication.