IEC TS 63042-103:2025, which is a Technical Specification, specifies the basic security and stability requirements for UHV AC transmission systems in planning and design, the security and stability criteria, and security and stability analysis method for the UHV AC transmission systems.
This document is applicable to power grids of UHV AC systems and their associated equipment and connected systems.

  • Technical specification
    26 pages
    English language
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IEC TS 63042-102:2021(E) specifies the procedure to plan and design UHV transmission projects and the items to be considered.
The objective of UHV AC power system planning and design is to achieve both economic efficiency and high reliability, considering its impact on EHV systems.

  • Technical specification
    67 pages
    English language
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IEC TS 63042-101:2019(E) specifies reactive power compensation design, voltage regulation and control, and insulation design for the coordination of UHV AC transmission systems.

  • Technical specification
    30 pages
    English language
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