IEC 61803:2020 RLV包含官方IEC国际标准及其红线版本。Redline版本仅提供英文版本，为您提供了一种快速简单的方法来比较IEC官方标准与其以前版本之间的所有变化。 IEC 61803:2020适用于公用事业系统中用于电力交换（输电或背靠背安装）的所有线路换向高压直流（HVDC）换流站。本文件假定使用12脉冲晶闸管转换器，但在适当小心的情况下，也可用于6脉冲晶闸管转换器。在一些应用中，同步补偿器或静态无功补偿器(SVC)可以连接到HVDC换流站的AC总线。此类设备的损失确定程序不包括在本文件中。本文件提出了一套确定HVDC换流站总损耗的标准程序。这些程序涵盖了除上述以外的所有部分，并解决了空载运行和运行损失以及尽可能使用测量参数的计算方法。与本文件中假设的典型设计相比，采用新颖元件或电路配置的换流站设计，或配备可能影响损耗的不寻常辅助电路的设计，应根据其自身的优点进行评估。与上一版相比，此版本包括以下重大技术变更: -为了便于本文件的应用并确保其质量保持一致，已对5.1.8和5.8进行了审查，考虑到与1999年第一版I的情况相比，目前的晶闸管生产技术提供的晶闸管参数分散性要小得多制定了EC 61803，因此晶闸管的生产记录可用于功率损耗计算； -总站负荷损失的计算（附件C中的情况D1和D2）已被更正。

IEC 61803:2020 RLV contains both the official IEC International Standard and its Redline version. The Redline version is available in English only and provides you with a quick and easy way to compare all the changes between the official IEC Standard and its previous edition. IEC 61803:2020 applies to all line-commutated high-voltage direct current (HVDC) converter stations used for power exchange (power transmission or back-to-back installation) in utility systems. This document presumes the use of 12-pulse thyristor converters but can, with due care, also be used for 6-pulse thyristor converters. In some applications, synchronous compensators or static var compensators (SVC) may be connected to the AC bus of the HVDC converter station. The loss determination procedures for such equipment are not included in this document. This document presents a set of standard procedures for determining the total losses of an HVDC converter station. The procedures cover all parts, except as noted above, and address no-load operation and operating losses together with their methods of calculation which use, wherever possible, measured parameters. Converter station designs employing novel components or circuit configurations compared to the typical design assumed in this document, or designs equipped with unusual auxiliary circuits that could affect the losses, are assessed on their own merits. This edition includes the following significant technical changes with respect to the previous edition:
- to facilitate the application of this document and to ensure its quality remains consistent, 5.1.8 and 5.8 have been reviewed, taking into consideration that the present thyristor production technology provides considerably less thyristor parameters dispersion comparing with the situation in 1999 when the first edition of IEC 61803 was developed, and therefore the production records of thyristors can be used for the power losses calculation;
- the calculation of the total station load losses (cases D1 and D2 in Annex C) has been corrected.