Event

Workshop B4

Moderator: Jiayang Wu

Panel Chair: Cornelis Plet

P1: Multiterminal-Hubs – a large step towards the energy grid of the future

Speakers: 4 TSOs co-presenting: Dr. Benjamin Hühnerbein (TenneT), Josef Heimkreiter (50Hertz), Dr. Daniel Eichhoff (Amprion), Dr. Michael Schäfer (TransnetBW)

In Germany, 70 GW of offshore wind power must be integrated into the power grid by 2045. To achieve this, the four German transmission system operators (TSOs) TenneT, Amprion, 50Hertz, and TransnetBW are building the energy grid of the future. The aim is to create a meshed direct current (DC) grid with innovative multiterminal hubs as nodes. Three hub projects have been initiated in northern Germany for this purpose to become be operational in the timeframe from 2030 to 2034. The required DC multiterminal technology will be developed and implemented through an Innovation Partnership between the four TSOs and partners from the industry.

P2: Project Aquila - GB HVDC hub and interoperability demonstration. Development progress

Speakers: SSEN and National grid co-presenting: Perry Hofbauer (SSEN), David Barron (National grid)

1. Highlight Concept
a. Safe-to-fail (Multiple opportunities and states of success)
b. Designing a path considering regulatory and political commitments
c. Inter-TO Coordination
d. Project Work packages
2. Progress to date and learnings from each package
a. Multi-terminal Control techniques and RTS demonstration
b. Hub delivery (Equipment requirements and specifications)
c. Procurement & Commercial (warranties & multi-party arrangements)

P3: Multi-vendor interoperability from China

Speakers : Xueguang Wu (SGCC) and Zhiyong Yuan (CSG)

1. VSC-HVDC experiences with multi-vendor interoperability from SGCC, particularly based on our Zhoushan MTDC and Zhangbei HVDC grid projects

The multi-terminal HVDC projects in SGCC, China
The management of the HVDC project in SGCC
The commissioning test of the HVDC project in SGCC
Development trends for the future HVDC projects in SGCC

2. Technical specification considerations and engineering cases for HVDC multi-vendor interoperability

Technical Specification Considerations, the Test Verification and the HVDC Case in CSG.

P4: InterOPERA project - Part 1 (Objectives and general approach - proposed Demonstrator)

Speakers: Sebastien Silvant (SuperGrid Institute), Peter Lundberg (Hitachi Energy), Cora Petino-Wagner (TenneT), Shahab Karrari (Siemens Energy)

To unlock multi-vendor HVDC grids and foster the transition of the European energy sector at large scale, InterOPERA proposes a coordinated approach between a diverse, high-level group of industries at the forefront of RES development and grid management. 4 HVDC vendors, 8 TSOs, 2 wind turbine vendors and 3 wind park developers bring their industrial knowledge and practical abilities to make future HVDC systems mutually compatible and interoperable by design, and to enable the grid forming capabilities of offshore and onshore converters. For this, a functional framework establishing connection requirements for different sub-systems at their DC Point of Connection is being developed. Looking at the AC side, concepts and expectations to grid-forming functionalities in the context of multi-terminal multi-vendor HVDC systems for wind power integration will also be presented. Some of those concepts and requirements will be ported to a Demonstrator grid.

P5: InterOPERA project - Part 2 (Multi-vendor interoperability by design - functional framework incl. grid forming)

Speakers: Sébastien Dennetière (RTE), Alexandra Bonnet (RTE), Syed Hamza Kazmi (Orsted), Philipp Ruffing (Amprion), Christoph Gringmuth (GE)

The roll-out of multi-vendor HVDC grids implies a paradigm shift as the functionality and performance of the DC system will no longer be the sole responsibility of the vendors. Thus, the compliance of the different subsystems to their functional specifications must be verified in stand-alone tests, after which their overall integration into a complete DC system need to be validated and de-risked through interaction studies. With its aim to pave the way for future multi-terminal multi-vendor HVDC projects, InterOPERA is developing, applying and validating the process using offline simulations and a real-time physical demonstrator. In addition to the technical challenges, requirements and methods for cooperation between all relevant parties, legal and contractual aspects such as confidentiality and quality assurance processes are developed and tested.

P6: North American initiatives on standardization to enable multi-terminal HVDC systems

Speakers: Cornelis Plet (DNV)

HVDC standards and the development of relevant benchmark models for system planning studies are critical to enabling the more efficient development of HVDC transmission projects. In the US, critical gaps in HVDC standards and benchmark models exist that slow the development of HVDC transmission projects. DNV will discuss a national effort it is leading to address these critical gaps. The project is funded by the US Dept. of Energy and leading transmission and renewable developers and has an advisory committee composed of transmission operators and HVDC converter manufacturers.

P7:IEC technical specification on HVDC system

Speakers: Frank Schettler (Siemens)

With the worldwide trend to decarbonize the energy sector, Multi-terminal HVDC systems became more and more attractive to collect remote large scale renewable energy and transmit it to the load centers. CIGRE and other international standardization committees, like CENELEC and IEC started various initiatives paving the way to what will be not less but a substantial shift of paradigms in the world of HVDC: The step from tailored single vendor to standardized multi vendor HVDC systems.
This presentation is going to explain the idea behind elaborating a Guideline and Parameter Lists for Functional Specifications of HVDC Grids, provide and overview on the structure and content of the existing IEC TS 63291 documents and share insights into some selected topics. It is expected that experiences gained from real infrastructure projects worldwide will provide the necessary feedback for developing these documents further.”

Open floor for the public, topics from each presenter