Performance Demonstration of HVDC substation equipment
The EU funded project “Progress on Meshed HVDC Offshore Transmission Networks” (PROMOTioN) addresses the challenges for meshed HVDC offshore network development. The project does not only perform the demonstrations of different HVDC Breakers, it also gives recommendations of how to test HVDC Breakers, and insight into typical requirements and expectations of HVDC Breakers in a grid. The project will finish in 2020 and all public material can be found on the project website. There is a need to move this work into standardization bodies to get an agreed and satisfactory testing procedure for the HVDC Breakers as well as for the non-linear resistors.
The increasing demand for HVDC technology requires the adaptation of gas insulated switchgear (GIS).
Based on the development and research results combined with the service experience a new type test philosophy including insulation system tests was developed. If future offshore grids would be considered with multi-terminal or switching stations offshore, the gain would be considerably larger. Moreover, the gas-insulated components can be applied in various HVDC applications.
This paper explains that the new components in an HVDC substation are far into the development phase and are on a clear path to an even higher Technology Readiness Level (TRL). The activities to increase the technical assurance to implement these components in the grid as described.
Once the HVDC substation equipment has been implemented into HVDC systems, and the experience should be collected on how they are actually being used, to develop more cost efficient solutions.