Grid Strength Metrics and Evaluation in Converter-Dominated Grids
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.
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- Swedish Energy Agency (Public, Sweden)