Clustering Techniques to Evaluate the Impact of Reactive Power from Distribution Systems on the Transmission System: The Italian Case

As renewable energy sources are integrated into power systems, managing their complexity becomes increasingly crucial. Clustering algorithms have emerged as indispensable tools for the analysis of modern power systems. In this paper, both a sensitivity-based method and an electrical coupling method have been utilized to analyze the impact of reactive power from distribution systems. The former relies on sensitivity analysis, whereas the latter depends solely on the network topology. The primary objective of this research is to identify distinct areas within the network where primary substations have a similar impact on the voltage within those areas. These techniques have been applied to a study case based on the Italian transmission network to show the efficacy of the algorithms.