Grid Strength Metrics and Evaluation in Converter-Dominated Grids
Research Project , 2019 – 2020

With a lower amount of synchronous generation and growing proportion of power-electronic converter interfaced renewable generation and transmission, such as wind turbines, solar photovoltaic and HVDC links, it is problematic that the short-circuit capacity based metrics and inertia constant are directly applied to evaluate the grid voltage and frequency strength. The main aim of the project is to re-evaluate classical metrics and propose new suitable metrics for evaluating the stiffness of the grid voltage and frequency in a power-electronic converter dominated power grid. The Swedish Energy Agency makes the assessment that the project handles an important challenge for the power grid and can contribute to a functioning system and increased understanding for the grid strength.


Peiyuan Chen (contact)

Associate Professor at Chalmers, Electrical Engineering, Electric Power Engineering, Power grids and Components


Swedish Energy Agency

Funding Chalmers participation during 2019–2020

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Sustainable development

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