Overview
IEC 60633:2019 - High-voltage direct current (HVDC) transmission - Vocabulary is an International Electrotechnical Commission (IEC) standard focused on creating a unified terminology for high-voltage direct current (HVDC) transmission systems, including HVDC substations that use electronic power converters for AC-DC conversion. This standard is essential for engineers, manufacturers, utilities, and stakeholders involved with HVDC power transmission infrastructure, ensuring clear and consistent communication across the industry. The 2019 edition introduces significant technical revisions, including updated and new terms reflecting advancements in converter technology and HVDC systems.
Key Topics
IEC 60633:2019 covers the following main areas relevant to HVDC transmission systems:
- Terms and Definitions: Standardized terminology for HVDC technology, addressing converters, substations, and control functions.
- Converter Circuits: Definitions related to the structure and operation of converter circuits, including bridge connections and commutation processes.
- Units and Valves: Terminology for converter units and various types of electronic valves, including thyristors and related equipment.
- Operating Conditions: Definitions describing operational states, firing angles, voltage and current behaviors, and failure modes in HVDC systems.
- System Configurations: Terms describing different types of HVDC systems, such as two-terminal, multiterminal, unidirectional, and bidirectional arrangements.
- Graphical and Symbolic Representation: Guidance on standardized symbols for diagrams and schematics in HVDC technology documentation.
Key technical updates in this edition include:
- Amended definitions for 40 terms, addition of 31 new terms primarily concerning converter units, valves, and HVDC substations.
- Inclusion of Figure 13 depicting capacitor commutated converter configurations.
- Integration of the February 2020 corrigendum.
Applications
The practical value of IEC 60633:2019 lies in its facilitation of international collaboration and standardization across HVDC projects. Its applications include:
- Technical Documentation and Communication: Ensuring all stakeholders use standardized vocabulary when designing, operating, and maintaining HVDC systems.
- Project Specification and Procurement: Providing a clear basis for technical specifications, reducing ambiguity during procurement and commissioning of HVDC equipment.
- Training and Education: Serving as an authoritative reference for training engineers and technicians working with HVDC technology.
- System Interoperability: Enhancing compatibility between equipment from different manufacturers by aligning on common terminology.
- Compliance and Quality Assurance: Supporting regulatory and quality assurance bodies in auditing HVDC installations using internationally recognized terminology.
IEC 60633 is widely referenced throughout the industry for consistent language in contracts, technical proposals, operations manuals, and engineering documentation involved in large-scale HVDC transmission projects.
Related Standards
IEC 60633:2019 is supported by several related international standards that provide further technical detail and guidance, including:
- IEC 60146-1-1 - General requirements and line commutated converters
- IEC 60050-551 - International Electrotechnical Vocabulary: Power electronics
- IEC 60617-5 & IEC 60617-6 - Graphical symbols for electrical diagrams
- IEC 60700-2 - Comprehensive list of HVDC valve terminology
Together, these IEC standards form a comprehensive framework for reliable, safe, and efficient design and management of high-voltage direct current transmission systems worldwide. For the most accurate and up-to-date information, consult the latest editions and applicable corrigenda.
Keywords: IEC 60633, HVDC transmission, high-voltage direct current, power converter, HVDC substation, converter valve, standardized terminology, line commutated converter, international standard, electrical power transmission.
