IEC 61954:2021作为IEC 61954:2021 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 61954:2021定义了晶闸管阀的类型、生产和可选测试用于晶闸管控制电抗器(TCR)、晶闸管开关电抗器(TSR)和晶闸管开关电容器(TSC)，构成电力系统应用静态无功补偿器(SVC)的一部分。该文件的要求适用于单阀装置（单相）和多阀装置（多相）。第4条至第7条详述了型式试验，即为验证阀门设计满足规定要求而进行的试验。第8条涵盖了生产试验，即为验证正确制造而进行的试验。第9条和第10条详细说明了可选试验，即型式和生产试验之外的试验。与上一版本相比，本版本包括以下重大技术变更:在4.4.1.2、5.1.2.2、5.1.3.2、5.2.3.2、6.1.2.2、6.1.2.4、6.1.3.2、6.2.2.2、6.2.2.4、6.3.2.2和9.3.2中进行了重要澄清。

IEC 61954:2021 is available as IEC 61954:2021 RLV which contains the International Standard and its Redline version, showing all changes of the technical content compared to the previous edition.

IEC 61954:2021 defines type, production and optional tests on thyristor valves used in thyristor controlled reactors (TCR), thyristor switched reactors (TSR) and thyristor switched capacitors (TSC) forming part of static VAR compensators (SVC) for power system applications. The requirements of the document apply both to single valve units (one phase) and to multiple valve units (several phases). Clauses 4 to 7 detail the type tests, i.e. tests which are carried out to verify that the valve design meets the requirements specified. Clause 8 covers the production tests, i.e. tests which are carried out to verify proper manufacturing. Clauses 9 and 10 detail optional tests, i.e. tests additional to the type and production tests. This edition includes the following significant technical changes with respect to the previous edition: important clarifications were made in 4.4.1.2, 5.1.2.2, 5.1.3.2, 5.2.3.2, 6.1.2.2, 6.1.2.4, 6.1.3.2, 6.2.2.2, 6.2.2.4, 6.3.2.2 and 9.3.2.