Abstract
This paper investigates the stability of high renewable penetrated power systems with an emphasis on grid structure. With both system dynamics and network topology taken into consideration, the influence of the increasing penetration of renewable resources to system stability is explored when the synchronous generators are gradually replaced by doubly fed induction generators (DFIGs). By virtue of a newly provided game-theoretic approach - SHAP (SHapley Additive exPlanations) values - the relationship between system small-signal stability and topological graph metrics is studied. Further, numerous statistical experiments are conducted on the available testing systems, including the standard IEEE test systems as well as the newly published synthetic networks with a wide variety of topologies. The results provide guidance on the further development of network growth models and control methods.
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