Summary

Future HVDC system planning requires the assessment of design and control features that are not captured by traditional steady-state power flow analyses. In particular, converter control strategies, from grid-following and grid-forming operation to coordinated MTDC controls, require dynamic simulation approaches. Conversely, electromagnetic transient–based studies focus on local behavior and provide limited insight into grid-level reliability and resilience.

This paper, developed within the HVDC-WISE project, presents the development and analysis of a representative AC/DC system use case based on RMS dynamic simulations to bridge this gap. A comprehensive RMS model of the interconnected European power system is coupled with a representative meshed MTDC grid in the North Sea, and severe contingencies are applied to analyze frequency behavior, power redistribution, and system-level AC/DC interactions.

Results show that advanced MTDC control functionalities significantly improve system performance under stressed conditions by reducing AC congestion, mitigating frequency deviations, and enhancing post-contingency stability margins. The results confirm that RMS dynamic models provide a computationally efficient framework for early-stage MTDC planning assessments.

Additional informations

Publication type Session Materials
Reference B4_10775_2026
Publication year
Publisher CIGRE
Country France
Study committees
File size 938 KB
Price for non member 30 €
Price for member 30 €

Authors

GONZALEZ-TORRES Juan Carlos - SuperGrid Institute; PEREZ Filipe - SuperGrid Institute; WITZ Eugene - SuperGrid Institute; BENCHAIB Abdelkrim - SuperGrid Institute; BARLA Nicolas - SuperGrid Institute; PERREYON Baptiste - SuperGrid Institute; PANTELI Mathaios - University of Cyprus; HASHEMI Seyedsina - University of Cyprus; JANKOVIC Stanko - TenneT; FOOTE Colin - The National HVDC Centre; MACIVER Callum - University of Strathclyde

Keywords

HVDC, MTDC, HVDC Planning, HVDC Control, HVDC Protection, reliability, resilience

Integrating protection and control in the reliability and resilience-informed planning of future MTDC grids