IEC TR 62001-4:2016 PDF

Overview

IEC TR 62001-4:2016 is a Technical Report from the IEC that gives guidance on the equipment side of AC filters used with high-voltage direct current (HVDC) systems. Focused on conventional AC filter technology for line‑commutated HVDC converters, this report covers basic data for AC side filters and their components - ratings, power losses, design considerations, protection, seismic requirements, audible noise and test parameters. It addresses the frequency range relevant to harmonic distortion and audible disturbances, but explicitly excludes filters targeted at the power line carrier (PLC) and radio‑interference bands.

Key topics and requirements

The report provides practical guidance on:

• Steady‑state rating methods and application of voltage and current ratings for filter equipment.
• Transient stresses and insulation coordination, including switching impulses, fault scenarios and fast‑front waveforms.
• Losses: how to evaluate component and system losses for capacitors, reactors and resistors under realistic harmonic and loading conditions.
• Design issues and special applications, such as tuned and triple‑tuned circuits, high‑pass filters, re‑tunable filters and tertiary‑winding filter arrangements.
• Protection strategies for filter banks and individual components: overcurrent, differential, earth‑fault, thermal and unbalance protection, plus special harmonic measurement functions.
• Audible noise assessment and mitigation for filter components and installations.
• Seismic requirements: load specification, qualification by analysis and mechanical design improvements for seismic resilience.
• Equipment design and test parameters for capacitors, reactors, resistors, arresters and instrument transformers - specifying electrical data and test regimes bidders and manufacturers should provide.

The edition is a technical revision that, together with IEC TR 62001‑1, ‑2 and ‑3, replaces IEC TR 62001 (2009); Clauses 10–16, 18 and Annexes F and G were expanded.

Practical applications and users

Who benefits:

• HVDC project engineers specifying AC filters and defining performance and rating requirements.
• Electrical equipment manufacturers designing capacitors, reactors, resistors, arresters and instrument transformers for HVDC filter service.
• Substation and protection engineers developing protection schemes and insulation coordination studies.
• Utilities, consultants and testing laboratories evaluating harmonic performance, audible noise, loss budgets and seismic qualification. Practical uses include preparing tender specifications, performing steady‑state and transient simulations, selecting filter components, defining test procedures and reducing operational losses.

Related standards

• IEC TR 62001‑1, IEC TR 62001‑2, IEC TR 62001‑3 (companion parts covering other aspects of HVDC AC filtering).
• This edition cancels and replaces IEC TR 62001 (2009).

Keywords: IEC TR 62001-4:2016, HVDC systems, AC filters, harmonic distortion, filter equipment, filter design, seismic requirements, protection, capacitors reactors resistors, audible noise.