WP2 [Requirements, opportunities, frameworks, and demonstration needs for R&R of future AC/DC systems]
Activities Performed:
T2.1 identified innovative approaches for grid R&R analysis in high-power-electronics grids.
T2.2 defined TSO needs based on operational experience and future hybrid AC/DC plans.
T2.3 established three realistic use cases for R&R analysis.
T2.4 reviewed existing codes and standards for HVDC connection and operation.
T2.5 compiled a list of R&R Key Performance Indicators (KPIs).
Achievements:
-Introduced consistent definitions of resilience and reliability in power systems.
-Established a set of technical KPIs for R&R assessment.
-Defined three realistic use cases for the demonstration phase.
-Identified gaps in European HVDC codes where the project can have a significant impact.
WP3 [HVDC architectures]
Activities Performed:
T3.1 classified AC/DC grid architectures and reviewed AC/DC control/protection concepts.
T3.2 proposed new HVDC control strategies to reduce risks and maximize R&R.
T3.3 delivered guidelines for cost-effective HVDC-based grid protection, enabling fault ride-through under AC, DC, or cyber disturbances.
Achievements:
-Proposed a classification methodology for AC/DC grid architectures.
-Developed advanced converter controls providing grid-forming capability while safeguarding DC integrity (to be tested in WP7).
-Created coordinated grid-level controls (frequency support, AC line emulation, damping, DC voltage stability, unbalance management) for WP6 validation.
-Produced simulation models of HVDC threats (D3.2/D3.3) with recommendations to minimize impacts.
-Validated a new approach to monitoring and protecting HVDC systems from cyber events via real-time simulations.
WP4 [Technologies]
Activities Performed:
T4.1 listed possible HVDC technologies, assessing readiness and relevance to R&R.
T4.2 defined modeling approaches for accurate R&R representation.
T4.3 proposed extensions and methodologies integrating HVDC into IEC CIM/CGMES standards, resulting in a public model library.
Achievements:
-Compiled a list of key HVDC-enabling technologies.
-Created an HVDC model library for dynamic simulations in PowerFactory using built-in language and FMI.
-Published a public library of HVDC models aligned with IEC CIM/CGMES at
https://github.com/HVDC-WISE/HVDC-Wise_lib(öffnet in neuem Fenster).
-Developed dynamic phasor models for inverters in DPsim at
https://github.com/sogno-platform/dpsim(öffnet in neuem Fenster).
WP5 [Tools]
Activities Performed:
T5.1 defined the conceptual framework for R&R-oriented planning and operation.
T5.2 adapted existing planning tools to account for reliability, resilience, and cost in hybrid AC/DC expansions.
T5.3 developed a cascading failure modeling tool (dynamic simulations) to assess security and resilience.
Achievements:
-Delivered a set of tools implementing the project’s R&R methodology:
--HVDC-WISE_TEA (T5.2) for expansion options under unavailability.
--Security Constrained Redispatch OPF (T5.2) for N-1 security in hybrid AC/DC grids.
--Cascading Event Quantification Tool (D-CFM, T5.3) for simulating disturbance propagation and potential blackouts.
--Restoration Tool (T5.3) for post-failure recovery analysis, showing how HVDC expansions improve grid restoration.
WP6 [HVDC design within the use cases]
Activities Performed:
T6.1 Define the three use cases and the R&R assessment methodology for HVDC-based expansions.
T6.2 began applying the methodology to design an R&R-focused HVDC system for Use Case 1 (large meshed system, Continental Europe).
T6.3 conducted a similar assessment for Use Case 2 (medium/small synchronous area, GB grid).
T6.4 assessed Use Case 3, an HVDC interconnection merging Use Cases 1 and 2 with offshore production.
Achievements:
- Defined the methodology for the project and for R&R-oriented planning
-Defined and nearly completed grid models for each use case.
-Configured the required tools for techno-economic, adequacy, and security/resilience analyses.
WP7 [EMT validation/analysis]
Activities Performed:
T7.1 T7.2 and T7.3 Started the EMT-based modelling work for Use Case 1, 2 and 3 respectively.
Achievements:
-Implemented EMT simulation tools for in-depth analysis.
-Clarified how EMT simulations fit into the overall project, providing final validation of the proposed control and protection methods.
