IEC 62751-1:2014

IEC 62751-1:2014 addresses power losses in voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) systems, providing a primary technical reference for evaluating loss-related performance in converter valve design and documentation. For engineering teams, laboratories, and procurement reviewers, the document is relevant when technical assessment depends on a clear basis for comparing designs, supporting documented evaluation, and aligning verification activities with the expected behavior of HVDC converter valves.

IEC 62751-1:2014 standard overview

IEC 62751-1:2014, titled Power losses in voltage sourced converter (VSC) valves for high-voltage direct current (HVDC) systems - Part 1: General requirements, is focused on the general framework for describing and assessing valve power losses in VSC-based HVDC applications. Its role is to support consistent technical review, engineering documentation, and conformity assessment where loss performance affects system efficiency, thermal design, and operational consistency. As a first-part reference, it is typically used to structure evaluation criteria before more detailed project-specific analysis.

Applications of IEC 62751-1:2014

This document is relevant in HVDC converter projects where VSC valves must be reviewed during design, testing, acceptance, or procurement activities. It may be used by manufacturers preparing technical submissions, by utilities and system integrators comparing equipment proposals, and by laboratories supporting validation or performance verification work. In practice, IEC 62751-1:2014 can assist teams involved in engineering specification review, loss calculation discussions, and technical document control for converter valve systems and related electrical equipment.

Why IEC 62751-1:2014 matters

Clear treatment of power losses is important because it affects thermal margins, system efficiency, and long-term reliability in HVDC installations. IEC 62751-1:2014 helps create a common basis for testing workflows and technical validation, reducing ambiguity during conformity assessment and procurement review. For organizations managing compliance workflows, it supports more consistent comparison of vendor data, better risk management, and stronger preparation for engineering sign-off, especially when documented evaluation of converter valve performance is required.

• General requirements for assessing power losses in VSC valves used in HVDC systems
• Useful for engineering review, vendor comparison, and project specification alignment
• Supports documented evaluation and consistency in technical validation workflows
• Relevant to thermal, efficiency, and reliability considerations in converter valve design
• Helps structure compliance preparation and conformity assessment activities