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DELIVERABLES

This deliverable lists the qualitative set of requirements for the Meshed Offshore Grid (MOG) that is used throughout the project.

Download Deliverable 1.1 (PDF 2.6 MB)

Deliverable 1.2 has the general objective of defining the requirements that should be met by an offshore HVDC grids and the wind farms connected to it.

Download Deliverable 1.2 (PDF 4.0 MB)

This deliverable brings together existing studies of offshore meshed HVDC grids and synthesizing them in order to create a baseline.

Download Deliverable 1.3 (PDF 4.0 MB)

The newly released deliverable 1.4 of Work Package 1 has the purpose to provide relevant scenarios for potential installed wind capacities in the Northern Seas and load/generation of surrounding countries based on available informatio.

Download Deliverable 1.4 (PDF 1.0 MB)

Deliverable 1.5 contains definitions of which requirements are quantifiable and presents a list of the quantified requirements of a Meshed Offshore Grid (MOG).

Download Deliverable 1.5 (PDF 2 MB)

Deliverable 1.6 develops a draft offshore grid expansion roadmap for the evacuation of offshore wind energy from the North Sea during the decade 2020-2030. It also studies the economic viability of HVDC offshore meshed grids by comparing their costs and benefits with radial point-to-point connections of offshore wind farms.

Download Deliverable 1.6 (PDF 6MB)

This deliverable lists the updated and evaluated qualitative and quantitative set of requirements for the Meshed Offshore Grid (MOG) that is used throughout the project. The work packages within PROMOTioN set out to address various interdependent barriers. Alignment of the project deliverables is enhanced by early agreement on requirements and identification of the gaps to be addressed in Work Package 1. In this Deliverable 1.7, the requirements are updated from previous deliverables D1.1 and D1.5, following updates from various Work Packages.

Download Deliverable 1.7 (PDF 3.4 MB)

Based on the work in WP2, this deliverable (D2.4) compiles requirement recommendations to adapt and extend existing network codes (NCs) for high voltage direct current (HVDC) systems which are in interaction with HVAC transmission grids. The focus is on the converters’ DC point of connection (PoC) and the AC PoC onshore, while both point-to-point HVDC links and meshed HVDC systems are addressed.

Download Deliverable 2.4 (PDF 1.8 MB)

In this deliverable, a set of requirements for the DRU (Diode Rectifier Unit) connected offshore wind farm is given as a basis for the control and compliance procedure development in Work Package 3.

Download Deliverable 3.1 (PDF 2 MB)

Deliverable 3.2 has main objective to identify and specify appropriate analyses and tests to demonstrate the interoperability of wind turbine and wind power plant controls with two different types of HVDC systems: diode rectifiers and VSC converters respectively to connect the wind power plants to the DC network.

Download Deliverable 3.2 (PDF 2.5 MB)

This deliverable is part of Task General Control Algorithms, which includes the simulation results of the DRHVDC system in normal operation and during faults. It shows the considered general OWFs connected with point-to-point DR-HVDC link and presents the results of the DR-HVDC system during normal operation, which covers energization, connection and disconnection of the offshore AC grid, operating point dynamic changing in different configurations as specified in D3.2. The ancillary services provided by the DR-HVDC system is addressed in D3.5. Furthermore it focuses on the fault ride-through and protection of the DR-HVDC system and various fault cases are analysed, i.e., onshore grid fault, DC cable fault, internal DRU fault, umbilical AC cable fault, and offshore fault. The performances of the DR-HVDC during the fault and after fault isolation are addressed.

Download Deliverable 3.4 (PDF 2 MB)

This deliveable includes the specification of control strategies, definition of test cases, implementation of control strategies and test cases, and stability assessment and tuning of controllers. It covers the assessment of the capabilities of offshore wind farms (offshore WFs, OWFs) to contribute in the provision of ancillary services to onshore alternating-current (AC) networks by means of active power modulation, when connected through high-voltage direct-current (HVDC) links having diode rectifier (DR) offshore terminals and voltage source converter (VSC) onshore terminals. In doing so, the compatibility of corresponding higher-level controls previously devised for VSC-HVDC-connected OWFs is examined.

Download Deliverable 3.5 (PDF 850 KB)

This report summarises the results of Task 3.3 “Compliance evaluation procedure”. In the Deliverable 3.6, evaluation procedures for compliance of the DRU connected OWFs to the requirements specified in Deliverable 3.1 are the main focus. In WP3 and also in this report, the main focus has been set on DRU-HVDC connection, since the VSC-HVDC connection is seen as a proven technology of today. Nevertheless, VSC-HVDC is still being investigated throughout the work package when there is room for further developments.

Download Deliverable 3.6 (PDF 601 KB)

This report is part of Task 3.4 “Compliance evaluation based on detailed numerical simulations”. The main aim of this report is to show the results of the compliance evaluation of the Wind Turbine Generator (WTG) Grid Side Converter (GSC) and WPP controllers, when operating as Grid Forming Converters.

Download Deliverable 3.7 (PDF 8.3 MB)

This document provides a List of requirement recommendations to adapt and extend existing grid codes with the focus on the recommendations to cover the Diode Rectifier Unit (DRU) concept, which has been studied in detail in WP3 of PROMOTioN.

Download Deliverable 3.8 (PDF 710 KB)

In this deliverable, a method for shallow assessment of fault clearing strategies is developed and used to benchmark the fault clearing strategies available in the literature.

Download Deliverable 4.2 (PDF 15 MB)

This deliverable proposes general requirements of DCCBs based on results obtained in the PROMOTioN project, particularly in work package WP4 and WP6.

Download Deliverable 4.5 (PDF 5.3 MB)

This deliverable presents the contributions of Work Package 4.5 of PROMOTioN project’s Work Package 4. It proposes a Cost-Benefit Analysis (CBA) approach from a DC protection point of view, i.e. to investigate the impact of DC grid protection and different DC protection strategies on the overall CBA. The main objective is to investigate to what level of detail DC grid protection needs to be integrated in CBA studies, in particular for the studies performed within the PROMOTioN project, on the topologies developed in WP12.

Download Deliverable 4.7 (PDF 10 MB)

This deliverable looking at the test environment of HVDC circuit breakers targets the HVDC network fault analysis.

Download Deliverable 5.1 (PDF 1.4 MB)

This deliverable provides a fault stress analysis of HVDC circuit breakers within Work Package 5, which looks at the test environment of HVDC circuit breakers.

Download Deliverable 5.3 (PDF 4.2 MB)

To date, there is no international standard describing the requiremensts, applicable tests and test procedures of HVDC circuit breaker. This document provides a general guideline for list of tests that shall be applied to HVDC circuit breakers for its operation and performance verification. Since there is no international standard for HVDC circuit breakers, the document is compiled using AC circuit breaker standards, CIGRE technical brochures, VSC converter valve standard and Chinese draft standard for HVDC circuit breakers as references.

Download Deliverable 5.4 (PDF 1.1 MB)

This document provides general information and guidelines for conducting tests of HVDC circuit breakers. In order to verify the test requirements defined in deliverable 5.4, the type of tests and sequence of execution, number of tests and pass/fail criteria are described.

Download Deliverable 5.5 (PDF 567 KB)

This document provides an overview and comparison of the various test circuits and their limitations, which can be used to realise the current breaking test requirements and procedures discussed in D5.4 and D5.5, respectively. The test circuits’ performance is compared to the test requirements. Methods to set-up and tune the test circuits’ parameters are presented. Approaches such as multi-part testing unit testing and synthetic testing, which seek to maximally test functionality and verify ratings within the test circuit’s limitations, are discussed.

Download Deliverable 5.6 (PDF 2.6 MB)

The main objective of this deliverable is developing system level models for selected hybrid DC CBs in PSCAD and EMTP.

Download Deliverable 6.1 (PDF 2.0 MB)

The objective this deliverable is the development of a PSCAD system-level model of the mechanical DC circuit breaker with active current injection.

Download Deliverable 6.2 (PDF 716 KB)

This report presents the results of task 6.5 of the work package WP6 “Develop kW-size hardware models for hybrid and mechanical DC CB”. The main objective of this task is developing DCCB test circuit and kW size (900V and 500A) IGBT hybrid and mechanical DC CB.

Download Deliverable 6.5 (PDF 7.69 MB)

This report presents the findings of the failure mode study on two DC Circuit Breaker topologies: hybrid breaker and mechanical breaker.

Download Deliverable 6.6 (PDF 5 MB)

This report presents the results of task 6.8 of WP6 “Develop roadmap for VSC Assisted Resonant Circuit (VARC) DC CB scaling to EHV DC voltage”. The work performed in D6.8 is a continuation of the work performed in D6.2, D6.4 and D6.9, that dealt with detailed modelling of VARC DC CB, whereas more detailed analysis of the DC CB implementation in an MTDC grid is performed.
The main objectives of this deliverable are to verify the detailed VARC DC CB model by experimental results in order to outline the scaling of the VARC DC CB to higher voltage levels and to simulate the behaviour of the VARC DC CB in multi-terminal HVDC networks.

Download Deliverable 6.8 (PDF 9 MB)

The present deliverable elaborates the current legal framework for offshore wind and grid development on international, European and national level. It is shown that often, the legal framework needs to be adapted in order to facilitate the development of a meshed offshore electricity grid. This is because offshore wind and offshore grid connections have developed strongly in the past few years while the legal framework lags behind. It becomes clear that while solutions have been sought in order to facilitate offshore wind, hybrid solutions that combine interconnection with offshore wind connection are often not yet supported by legal frameworks.

Download Deliverable 7.1 (PDF 2.7 MB)

The present deliverable analyses the form and the contents of the target legal framework for the Meshed Offshore Grid (MOG). Considering the form, there is no ‘one size fits all’: different legal instruments are needed to reach a target legal framework that addresses all issues at the best level, that is, following the subsidiarity principle, the most immediate (most local) level at which the solution still is effective.

Download Deliverable 7.2 (PDF 1.4 MB)

This deliverable focuses on the development of an economic framework for the offshore grid in terms of three building blocks namely: planning, investment, and operation.

Download Deliverable 7.3 (PDF 2.8 MB)

This final report extends the intermediate report D7.3 with the addition of three new topics: incentives, CBCA and the balancing mechanism.

Download Deliverable 7.4 (PDF 4.3 MB)

The aim of D7.5 is to identify and propose appropriate recommendations to facilitate investments in a meshed offshore electricity transmission grid in the North Sea. Based on research on the current financing of onshore and offshore electricity transmission grids in the European Union (EU), the investigation and comparison with international practices and the identification of the main financial challenges and investment barriers, a set of recommendations will be developed to overcome these challenges and the investment gaps.

Download Deliverable 7.5 (PDF 1.2 MB)

This report focuses on the financing challenges and particularly the parameters that have an impact on financing and provides solutions to address them as well as recommendations on appropriate financing structures that could attract investors and facilitate efficient investmets in a MOG.

Download Deliverable 7.6 (PDF 2.2 MB)

‘Stakeholder Interaction’ in the context of PROMOTioN is a component of the stakeholder management of the project. It can be described as a support process for the overall project dissemination and stakeholder management activities. It defines ways and means to engage with stakeholders, e.g. from industry, policy, academia and associations, over the entire project’s duration and allows for direct feedback. While measures such as a project newsletter or a project website are both means of stakeholder management, stakeholder interaction goes beyond this, and fosters direct and bilateral communication measures. This can be achieved via workshops & discussions, surveys, face-to-face cooperation and communication with stakeholders.

Download Deliverable 7.7 (PDF 1.5 MB)

This report is the end of three years of research into the requirements of the legal, economic and financial frameworks that could facilitate the cost-effective construction and governance of a MOG. This research is part of the wider PROMOTioN (Progress in Meshed HVDC Offshore Transmission Networks) project, which has also sought to overcome the technical barriers to meshed High Voltage Direct Current (HVDC) networks and assess the relative costs and benefits of meshed offshore grids.

The intention of this deliverable is to summarise the legal, economic, governance and financing issues related to such a unique infrastructure and make recommendations on next steps to develop the necessary frameworks. Further detail on these topics can be found in deliverables D7.2 (Legal Framework), D7.4 (Economic Framework), and D7.6 (Financial Framework). In addition, this document presents new analysis on the system operation of a meshed offshore grid.

Download Deliverable 7.9 (PDF 2.05MB)

The objective of stakeholder interaction, as already outlined in detail in the previous intermediate stakeholder report “D7.7”, is to receive feedback on the intermediate and final results of PROMOTioN’s WP7.

Download Deliverable 7.7 (PDF 500 KB)

To understand the economic and social consequences of undertaking an offshore grid development in a particular region, it is necessary to perform a cost benefit analysis to assess the value and costs of the meshed offshore grid to society. In order to perform this cost-benefit analysis, a CBA methodology should be employed that sets out a clear set of guidelines to ensure a thorough assessment and comparison of alternative offshore grid solutions.

Download Deliverable 7.11 (PDF 1.7 MB)

This document describes the base models used for testing of the partially and fully selective protection strategies for demonstration events D9.3 and D9.4 coving the topics of partially selective HVDC protection, and fully selective HVDC protection. The non-selective strategy is covered separately in the modelling report equivalent to this, D9.5, and a further demonstration event D9.6.

Download Deliverable 9.1 (PDF 1.2 MB)

The objective of this deliverable is to develop DC grid testing procedures and guidelines for system level testing of future multi-terminal HVDC grids. This deliverable and work package WP9 uses the IEDs with protection algorithms developed in WP4. The protection strategies are tested in real-time environment utilising hardware-in-loop testing methods.

Download Deliverable 9.2 (PDF 1 MB)

Documentation of the demonstration day of a HVDC protection system.

Download Deliverable 9.3 (PDF 18 MB)

The objective of WP9 is to demonstrate operation of the DC grid protection systems developed in the project using hardware in the loop real-time methods. This WP will integrate results from DC CB modelling (WP6 and WP10) and DC protection development (WP4) including hardware prototype of relay to be tested at The National HVDC Centre facility (Scotland) and demonstration of DC Grid protection system interoperability.

Download Deliverable 9.5 (PDF 6.7 MB)

The activities in Work package 10 (WP10) continue from the works in WP5. In WP5 several studies have been conducted ranging from system studies for determining the stresses on HVDC circuit breakers and their interaction with the system to designing and implemention of a test circuit supported by simulation and verification in a test laboratory. The next logical step in the design and verification of a test circuit is to test the implemented test circuit with real test objects, prototypes of HVDC circuit breakers. Thus, the main objective of this task is to verify the correct functioning of test circuit as wel as the HVDC circuit breakers of various technologies.

Download Deliverable 10.1 (PDF 2.56 MB)

HVDC circuit breakers interact with their surroundings during the current interruption process. This could be the HVDC grid in the practical operation or the test environment during testing at a test facility. In order to study this interaction, access to internal measurements of sub-component stresses is necessary. Due to confidentiality issues it is difficult to get access to internal measurements of manufacturers’ prototype breakers. In addition, the test results with the detailed measurements including test failure conditions are publicly shared within the project consortium. Therefore, an “experimental DC CB” is set-up in KEMA Laboratories by putting commercially available, standard components already in use in the laboratory, combined with a few specially designed systems, together.

Download Deliverable 10.2 (PDF 5.80 MB)

This is a document accompanying the data supplied in excel sheet as well as . Besides, the actual test results as obtained in a test laboratory are supplied in a separate file. Therefore, this document is supplying descpription of the contents of those files.

Download Deliverable 10.3 (PDF 832 KB)

This document provides detailed analysis of current interruption test results of an experimental DC CB with active current injection set-up in a test laboratory. First, the test arrangement of the experimental DC CB is discussed. Then, the test method and test procedure are briefly presented.

Download Deliverable 10.4 (PDF 14.45 MB)

This deliverable aims to contribute to the standardization of testing of HVDC circuit breakers. Its content is based on observations made during testing of experimental versions and prototypes of HVDC circuit breakers of the active current injection type (pre-charged capacitor discharge and VSC assisted resonant current technology) and hybrid technology in the PROMOTioN project.

Download Deliverable 10.8 (PDF 1.3 MB)

In order to fully exploit the technical work within the PROMOTioN project, contribution to harmonisation is strongly encouraged. The purpose of this Harmonization Catalogue is to provide a state-of-the-art regarding harmonization of HVDC systems, identify gaps in this harmonization, and analyse how findings in the PROMOTioN project can contribute. An overall conclusion is that PROMOTioN should contribute to ongoing work in existing best practice and standard working groups rather than establish new working groups.

Download Deliverable 11.1 (PDF 1.3 MB)

This document is part of WP11 “Harmonisation towards standardisation” of the PROMOTioN project. The overall objective of WP11 is to support and establish harmonisation of the industry’s best practices, standards and requirements for HVDC grid systems and DC connected offshore wind power plants. This document, deliverable D11.2, includes content from the PROMOTioN project deemed relevant to harmonisation bodies and further standardisation with regard to HVDC systems.

Download Deliverable 11.2 (PDF 2.3 MB)

This report summarises the learning developed under previous work packages in the design, specification and testing of a meshed DC system. A further questionnaire to partners within the PROMOTioN project has also been used to further inform the recommendations that should be made in the above areas of challenge. These outcomes are summarised and discussed in the context of driving process recommendations.

Download Deliverable 11.5 (PDF 1 MB)

The main objective of Deliverable D12.1 is to provide a preliminary analysis on key technical, financial, economic, legal, regulatory and market barriers and direction for solutions. These solutions are currently being analysed more deeply by the different Work Packages (WPs) of the PROMOTioN project. The analyses gives a snapshot of the results to date and will be refined in the upcoming deliverables12.2 and 12.3. In order to provide a preliminary analysis of barriers hampering the development of a HVDC Meshed Offshore Grid (MOG) and a preliminary related portfolio of solutions, this deliverable looks at:

  • The conceptual building blocks for analysing challenges to the future offshore grid as identified in the different Work Packages (WPs) and possible Concepts for a future offshore grid;
  • The work in various WPs, to analyse the specific barriers and related solutions, is ongoing.

Download Deliverable 12.1 v2 (PDF 2.5 MB)

The PROMOTioN project (Progress on Meshed HVDC Offshore Transmission Networks), is a program that has advanced the HVDC technology required to build, control and protect meshed HVDC transmission grids. Within PROMOTioN, non-technical work has also been done to collate and consider the legal & regulatory, economic, financial, market and governmental environment around building such a grid. In this document the analyses and conclusions of the technical and non-technical work are brought together and combined with estimations of the scale of the task to construct an offshore grid for the evacuation of wind generation. It is assumed that all non-technical conditions are favourable to construct such a grid. How and when to create these favourable conditions is discussed in Deliverable 12.3 – Draft Deployment Plan for an HVDC offshore grid.

Download Deliverable 12.2 (PDF 20.5 MB)

The aim of this document is to translate the results of the PROMOTioN project into practical and executable advice to the European Commission and other stakeholders to overcome barriers and advance the deployment of a MOG. This document includes a roadmap for the development of a MOG, pinpointing key grid development characteristics in each time period. It then summarises the key recommendations for all technical and non-technical aspects of a MOG and finally assigns these to stakeholders, thereby combining the anticipated development of the grid with the recommendations. An overview of the process to establish this deployment plan is given in Figure 1 below, where it is shown that the Cost-Benefit Analysis (CBA), technology recommendations and non-technological recommendations is combined into the deployment plan.

Download Deliverable 12.3 (PDF 7.4 MB)

This deliverable provides the executive summary of the project interim report and gives an overview of the work done within the PROMOTioN project.

Download Deliverable 13.5 (PDF 969 KB)

This deliverable provides the executive summary of the second reporting period from January 2017 - June 2018. It summarises the project interim report and gives an overview of the work done within the PROMOTioN project in the mentioned period.

Download Deliverable 13.5 - Reporting Period January 2017 - June 2018 (PDF 117 KB)

The Exploitation Plan (deliverable D14.4) provides definitions on types of project results and an overview of the most significant exploitable results after 2.5 years of project progress. The plan also proposes two applicable conceptual frameworks for use during result exploitation. In the next 18 months, more project results are expected.

Download Deliverable 14.4 (PDF 1.36 MB)

The global trend towards decarbonisation and increased penetration of renewable energy resources has posed new challenges. The need to connect offshore renewable resources in deeper waters and longer connections to shore has led to increased demand for Voltage Source HVDC converter technology. Compact DC switchgear is needed for HVDC cable connections to remote offshore wind farms and onshore projects close to city centres. The compact design of gas insulated HVDC systems is therefore very attractive for applications where space comes at a high premium. Also, HVDC GIS based solutions will need to be developed to facilitate the realization of multi-terminal meshed HVDC grids. It has been estimated that space requirements for switchgear can be reduced by 70% - 90% compared to air insulated switchgear (AIS). This could lead to space saving of up to 10% for overall offshore platform.

Download Deliverable 15.1 (PDF 528 KB)

HVDC GIS has been introduced as a promising technology where the benefits of the proven HVDC transmission and AC gas-insulated switchgear/systems can be combined. Up to the present time, no international standards describing the requirements, applicable tests and test procedures of HVDC gas insulated systems (GIS) have been developed. This document provides a general guideline for listing the tests that shall be applied to HVDC GIS to verify their designed performance. Focus is given to the dielectric test requirements due to the different nature of DC electric fields in GIS compared to AC fields. Additionally, due to lack of operational experience on HVDC GIS, a long-term test method to prove the dielectric performance of a prototype installation under in-service conditions is described. The described method will be applied to a prototype HVDC GIS which will be built by a GIS manufacturer (task 15.3 of PROMOTioN) based on the specifications and ratings that are defined in deliverable D15.1.

Download Deliverable 15.2 (PDF 726 KB)

PROMOTioN aims to increase the Technology Readiness Level (TRL) for HVDC GIS, which means that the perspectives for the DC GIS technology are to soar in the short or medium term. An increase of renewable sources especially offshore will yield a higher demand for DC GIS technology and in turn, this implies increasing demands on components, materials and M&D tools. Currently, only few HVDC GIS are in operation worldwide. In consequence, little service experience and few information about the long-term capability of this type of technology are available. Additionally, there are no international standards established for specifying and testing such systems. WP 15 is set off to tackle this lack of laboratory and field experience as a way to anticipate oncoming needs. The efforts as part of the D15.3 are to be focused on several levels, such as the laboratory and the component level.

Download Deliverable 15.3 (PDF 3 MB)

Today, the experience regarding the operation and control of meshed DC grids as well as their interaction with AC transmission systems and offshore wind farms is limited. To enhance the confidence in the controllability of such systems, a DC network demonstrator embedded in a real-time simulation environment of wind farms and AC grids is set up within work package 16. Furthermore, the resonance behaviour of a wind turbine converter from a leading manufacturer and the demonstrator’s multilevel converters will be analysed. Deliverable 16.1 specifies all test cases, which will be considered in this context.

Download Deliverable 16.1 (PDF 1.27 MB)

This report summarises the learning developed under previous work packages in the design, specification and testing of a meshed DC system. A further questionnaire to partners within the PROMOTioN project has also been used to further inform the recommendations that should be made in the above areas of challenge. These outcomes are summarised and discussed in the context of driving process recommendations.

Download Deliverable 16.3 (PDF 4.5 MB)

The main objective of this document is to present a step-by-step theoretical derivation of the state-of-the-art input admittance of the grid-connected power electronics applications (i.e. wind turbine generators, HVDC, and Diode rectifier units) relevant for the offshore wind power integration. The reader is suggested to treat this document as a summary of the state-of-the-art input admittance modelling of grid-connected power electronics. It is by no means the purpose of this document to publish or create a new methodology for the harmonic resonance analysis. The sequel document D16.4 will elaborate on the model validation of the input admittance modelling presented in this document and apply the methodology for the harmonic resonance analysis pertaining to offshore wind farm grid integration. This deliverable will also include the frequency domain modelling of additional components, such as cables.

Download Deliverable 16.5 (PDF 4.33 MB)