Enabling interoperability of multi-vendor HVDC grids

Leistungen

Preliminary Multi-Vendor Cooperation Framework for generic model sharing, Definition of business contract guidelines

A preliminary Multi-Vendor Cooperation Framework that defines the way of collaboration and sharing of general information, generic models and technical parameters among directly involved TSOs, offshore developers, non-TSO asset owners, operators, integrators as well as vendors within the context of InterOPERA. Supplementing the consortium agreement, the preliminary cooperation agreement documents are intended for interoperability studies conducted within InterOPERA and shall cover the anticipated minimum requirements within the scope of Phase 1.

Functional requirements for HVDC grid systems and subsystems

Definition of the respective HVDC Grid modules' functional requirements and the interfaces between modules:- The functional requirements are expected to comprise requirements on the expected ratings of the converters, earthing and layout, control modes, dynamic performance, signals exchanged, start-up and shutdown procedure, protection strategies, fault-ride-through capability. - Integrated diagrams of control blocks will be developed to create a common view, including for each function or each module, clear inputs/outputs interfaces, control parameters and objectives. - Preliminary definitions of KPIs for the different functions will increase the efficiency of specifications to ensure interoperability. Underlying technical realisations qualitatively analysed and quantitatively compared.A second delivery will be issued at M24.

Definition of standard interface and requirements for vendors’ converter models and C&P cubicles

Definition of requirements and of the interface with offline EMT, SIL models and C&P cubicles by covering the following aspects:- Description of the type of transients to be studied and typical frequency range of phenomena that need to be investigated.- Analysis of the flow of data and data identification relevant for accurate and reproducible interaction studies.- Definition of minimum standardised technical requirements for EMT offline models of VSC-HVDC converters, offshore wind PPMs and DC switching stations. These requirements may be applicable to models running in real-time (SIL).- Standardised documentation for interfaces between C&P models and plant models provided by vendors for EMT offline and real-time simulation, relevant for VSC-HVDC converters, wind PPMs and DC switching stations.- Standardised documentation for interfaces between C&P replicas and plant models relevant to perform interaction studies using real-time HIL simulation.- Requirements for parallel offline simulation and model with multiple instances.- Recommendations to check model performance, quality, and accuracy according to the current industry practices. - Accessibility of model data and settings, in connection with T4.1 and T4.2.- Documentation and validation for implementation in different software packages (EMT offline and SIL).- Documented standard interface for physical hardware (analogue and digital interfaces) for control cubicles.

Multi-Vendor Cooperation Framework incl. role, duty, responsibility definition refinement as well as downstream amendment process

A generalised and universally applicable Multi-Vendor Cooperation Framework applicable for future real-life projects.Definition of roles, duties, responsibilities, and a downstream amendment process.

Multi-Vendor Cooperation Framework for information shared with direct and indirect stakeholders

A generalised and universally applicable Multi-Vendor Cooperation Framework applicable for future real-life projects.Information shared with direct and indirect stakeholders enabling both future expandability as well as dynamic system studies at early stages of planning and detailed control and protection developmentThe Multi-Vendor Cooperation Framework will cover generic model sharing, e.g. in case an existing scheme is extended, and another party intends to connect or for dynamic system studies at early stages of planning, and detailed model sharing, e.g. to perform high-quality de-risking and reliable system integration studies among the involved parties

Minimum technical requirements for EMT offline, SIL and HIL simulation platforms and models to perform interaction studies

Standardised functional requirements for offline and real-time simulation platforms to perform interaction studies capable to match the requirements defined in D1.1. Those requirements are expected to enable any TSO or vendor-independent stakeholder to set up a consistent framework enabling systematic multivendor interaction assessment and de-risking interoperability in multi-vendor projects. The platforms for offline and real-time simulations must be able to host the actual control code for HVDC as well as other PEIDs supplied by different vendors (FACTS, wind turbines, PV, storage). It is expected to reduce the time and the costs for offline EMT, SIL and HIL studies for the owners and the operators, by enabling seamless interaction of converter models or C&P hardware setup. Deployment of appropriate simulation tools, compilers and interfaces (grid data as well as documented HVDC or PEID control interfaces) to tackle the increasing overall system complexity. Development of appropriate technical solutions (e.g., improved parallelised computation, standardised EMT data and model data exchange formats for grids) enabling large-scale EMT simulation. In this context, large-scale comprises extensive AC and DC grid structures. Facilitate necessary exchange of data for EMT simulations between all stakeholders involved in MT multivendor systems.

Dissemination and communication plan

Project’s plan for its communication and dissemination activities Assessment and monitoring of the impact of the communication actions (see Table 2.2 .C and section 2.2.3).A second issue will be delivered at M48

Definition of a standard process for interaction studies with EMT simulation in multi-vendor projects

Definitions and requirements relevant for interaction studies, applicable to any multi-vendor system that includes HVDC and PPMs:- Latest contributions provided by international working groups (CIGRE, CENELEC, etc.) and experience from HVDC projects (FAB, Johan Sverdrup, etc.) in the field of interaction studies with multi-vendor systems.- Relevance and expectations from different tools (offline simulation, SIL and HIL real-time simulation) and their staged usage in a real multivendor system, including system extension.- Technical data to be provided and/or exchanged by manufacturers (minimal list of signals and parameters) needed for interaction studies; - Validation tests and procedures for models including approach to determine various operational circumstances representative for typical, abnormal, and exceptional system conditions under which the tests and procedures shall be conducted.- Maintenance and long-term strategy regarding those tools, and ability to replace one tool with another (e.g., model refurbishment during the project lifecycle).

Functional requirements for GFC of HVDC systems and PPMs, Recommendations of GFC for connection network codes

Definition of grid-forming control concepts and control hierarchy for multi-vendor HVDC applications, for three main concepts: 1) offshore grid-forming control by offshore HVDC converters, 2) fault ride-through capabilities of offshore PPMs, 3) offshore grid-forming control by offshore PEIDs (e.g. PPMs), enabling onshore GFC by HVDC convertersFormulation of basic functional requirements for grid-forming control for the three main control chain concept, towards the interoperability of multiple parallel grid-forming devices, ensuring that the needed capabilities will be provided at the onshore and offshore connection points.

Demonstrator project definition and system design studies

General assessment of the planned and foreseen regional multi terminal HVDC projects and a pan-European top-level review built on the PROMOTioN results and taking into account the ENTSO-E’s Ten Year Network Development Plan (TYNDP) and Projects of Common Interest (PCIs). Definition of the most relevant demonstrator grid design, architecture and topology for InterOPERA and future developments, and rationale for the evaluation and selection process Basic feasibility report for the defined demonstrator projectDiagrams showing the topology of the DC grid, including those of the individual installations and their connections:- DC grid architecture and topology, - DC grid main circuit data, - DC switching stations and aligned DC switching units, - DC grid energy absorbers, - AC/DC converter stations and aligned converter units.

Risk assessment and procurement strategy

A generic and universally applicable risk assessment and procurement strategy for the main electrical components for future multi-terminal multi-vendor HVDC projects:- identification of the main electrical components needed for a typical multi-terminal HVDC grid- market screening to show the actual market capacity to supply the required systems and components as well as technologically readiness for the needed components- concepts on how to split the main electrical components in different tendering processes (e.g. HVDC converter stations, HVDC grid controller, HVDC switching stations yards including fault separation devices, HVDC cables, HVAC switch yards)- strategies on how to share responsibilities and liabilities and on how to handle both delays during construction, damages caused by failures during commissioning or operation and performance issues during operation

Exploitation plan

This report will highlight exploitable project results across all work packages and define strategies to maximise impacts of exploitable results, to effectively plan the exploitation of project results during and beyond the life of the project.A second issue will be delivered at M52.

Communication tools and materials

Communication tools and materials - Corporate image of the project in M3, Website in M4, Flyer in M6, Videos (x2) in M6 & M52A second issue of this deliverable will be delivered at M52.

Consultation summary report from the technical workshops

Description of the stakeholder committee Report on the organisation of 5 technical consultation workshops. These workshops are envisaged to take place in months 12, 22, 28 (jointly with the second high-level dissemination event), 40 and 48 as side events to big sectorial events or independently. (More information about this activity is provided in section 2.2.2 and Table 2.2.B.)A second issue will be delivered at M52.

Veröffentlichungen

Analysis of Interoperability between DC-Voltage-Droop-Controlled MMCs with Grid-Forming Functionality in a MTDC Grid

Autoren: Mohamed Elsodany, Kosei Shinoda, Jing Dai, Seddik Bacha
Veröffentlicht in: 2025 IEEE Kiel PowerTech, 2025
Herausgeber: IEEE
DOI: 10.1109/POWERTECH59965.2025.11180302

Assessment of two DC voltage droop options for small-signal stability in MMC-based multi-terminal DC grids

Autoren: Mohamed Elsodany, Kosei Shinoda, Jing Dai, Alberto Bertinato, Seddik Bacha
Veröffentlicht in: IET Conference Proceedings, Ausgabe 2024, 2024, ISSN 2732-4494
Herausgeber: Institution of Engineering and Technology (IET)
DOI: 10.1049/ICP.2024.2199

Design of bipolar MT HVDC grids: Contingency analysis and preliminary dynamic studies

Autoren: C. Cardozo, H. Clémot, B. de Foucaud, J. Pouget, P. Rault, S. Dennetière, T. Qoria, S. Hansen
Veröffentlicht in: Electric Power Systems Research, Ausgabe 251, 2025, ISSN 0378-7796
Herausgeber: Elsevier BV
DOI: 10.1016/J.EPSR.2025.112201

Development of frequency-dependent DC equivalent models for multi-terminal DC grids

Autoren: Mohamed Elsodany, Kosei Shinoda, Jing Dai, Seddik Bacha
Veröffentlicht in: International Journal of Electrical Power & Energy Systems, Ausgabe 173, 2025, ISSN 0142-0615
Herausgeber: Elsevier BV
DOI: 10.1016/J.IJEPES.2025.111427

The decarbonization of Europe through the development of interoperable offshore electricity grids and in compliance with EU competition law

Autoren: Grant Dawson, Ceciel Nieuwenhout
Veröffentlicht in: Journal of European Competition Law & Practice, 2025, ISSN 2041-7772
Herausgeber: Oxford University Press
DOI: 10.1093/JECLAP/LPAF061

On the damping and coupling impacts of DC fault-limiting reactors in multi-terminal DC grids

Autoren: Mohamed Elsodany, Kosei Shinoda, Jing Dai, Seddik Bacha
Veröffentlicht in: International Journal of Electrical Power & Energy Systems, Ausgabe 174, 2026, ISSN 0142-0615
Herausgeber: Elsevier BV
DOI: 10.1016/J.IJEPES.2025.111543

Leistungen

Veröffentlichungen

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