Power system stability with both rotary and static interfaces against production and consumption
There is an on-going shift in electric power systems from rotating towards static interfaces with both production and consumption. Microgrids and transmission grids with high penetration of renewables are examples of future systems with a mix of interfaces that are often studied. The Swedish railway grid is an example that already exist but that gets far less attention.
Previous studies and measurements have indicated stability problems, which have been explained in a previous project using simplified models. It was shown that the difference between the power electronics control and the passive behaviour of the rotary converters play an important role here. In this project, the models will be improved and will be applied to more complex network configurations. Results from the study will also be applied to practical railway grids, but also to future systems such as microgrids and transmission networks with a mix of rotating and static interface.
Funding: Swedish Transport Administration.
Project participants: John Laury, Lars Abrahamsson, Math Bollen.
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