Webinar (EU/US Time) - HVDC Cable Current Rating Calculations
Join us for a comprehensive webinar tailored for electrical engineers and cable system designers seeking to advance their understanding of HVDC cable current rating methodologies. This session delves into the dual limitations of thermal and dielectric stress that define the safe operational boundaries for high-voltage direct current (HVDC) cables. Building on the latest research, the webinar will present practical approaches and parametric analyses for accurately determining cable ratings under diverse installation conditions, including air, buried, and tunnel scenarios. Real-world examples and validation studies will be showcased, followed by an interactive Q&A.
What You’ll Learn:
Fundamentals of HVDC Cable Ratings - Understand how both thermal constraints and dielectric stress in the insulation jointly determine the effective current-carrying capacity of HVDC cables. Learn why stress-limited ratings are critical, especially as insulation conductivity and electric field distribution change with temperature and load.
Field Inversion and Its Impact - Explore the phenomenon of field inversion—where the peak electrical stress shifts from the inner to the outer insulation layer as current and temperature rise—and how this limits cable ratings. See how temperature-dependent conductivity leads to non-uniform electric field distributions, requiring both thermal and electrical limits to be considered.
Parametric Analysis Across Installation Scenarios - Gain insights from detailed analyses covering:
Cables installed in air: Effects of conductor size, material, voltage, and ambient temperature.
Buried cables: Influence of soil dry-out, burial depth, cable separation, and duct installations, validated with Finite Element Method (FEM) simulations.
Ventilated tunnels: Impact of tunnel length, depth, and air velocity on both thermal and stress-limited ratings.
Numerical and Analytical Methods - Discover how analytical equations and numerical FEM approaches are used to calculate both thermal and stress-limited ratings. Learn how to determine the insulation temperature drop corresponding to a maximum allowable electrical stress, and how these calculations inform real-world cable sizing and rating decisions.
Transmission Capacity Optimization - Review how maximum transmission capacity is influenced by operating voltage, conductor size, and insulation thickness. Understand why the peak capacity may occur at a voltage lower than the cable’s rated voltage, and how to calculate the optimal operating point for maximum efficiency and safety.
Validation and Practical Recommendations - Examine case studies and sensitivity analyses that highlight the real-world impact of installation conditions—such as soil drying, duct use, and tunnel ventilation—on both thermal and stress-limited ratings. Learn best practices for ensuring compliance and maximizing cable reliability under varying environmental and operational scenarios.
Whether you’re designing new HVDC transmission links, reviewing installation practices, or seeking to validate your current rating calculations, this webinar will equip you with the latest methodologies and tools for robust, accurate cable system design. Don’t miss this opportunity to elevate your expertise in HVDC cable rating and ensure the reliability and safety of your power transmission projects.
TERMS AND CONDITIONS
Attendees who complete the survey form will receive their certificate within 2–3 business days.
Survey forms expire within 48 hours after the webinar. Please ensure you complete the survey before it expires.
Once the survey has expired, certificates will no longer be issued.
Paid ticket holders who do not complete the survey will still receive the slides and recorded videos, but not the webinar certificate.
Paid ticket holders will receive their slides and recorded videos within 5–6 business days, or as notified, depending on the topic.