Demonstration of converter impedance measurement for the stability assessment in converter dominated power systems

The ongoing energy transition is transforming the fossil-fuel based energy system of today into a more sustainable energy system of the future. This transition is further accelerated by the Paris Agreement, which aims to significantly cut down the global CO2 emission levels. The grid-connected Voltage Sourced Converters (VSCs) is the underpinning technology for the success of this energy transition.

DNV GL proudly announced the world’s first MW-level wind turbine power converter input-impedance measurement carried out in an independent lab with the commercial partner Ming Yang Smart Energy, Zhongshan, China. A current perturbation measurement setup is prototyped in the DNV GL Flex Power Grid Lab (FPGL) to measure the input-impedance of a MW-level wind turbine power converter and verify the harmonic impedance model that is essential for the management of harmonic resonance risks, especially in the practice of offshore wind farm grid integration. The benefit of the current perturbation method is its scalability to meet the growing size of Device-Under-Test (e.g. wind turbine generator, PV generator etc). The demonstration took place in context of the EU research project PROMOTioN at 15th August in Arnhem. The PROMOTioN (Progress on Meshed HVDC Offshore Transmission Networks) project aims to tackle technical, regulatory, financial and legal challenges to the implementation of offshore meshed HVDC transmission networks.

Further information can be found in the associated press release for download below.