Summary
This work examines the potential increase in voltage dips propagation due to the widespread diffusion of Inverter-Based Resources (IBRs), which can lead to a significant reduction in the overall short-circuit power of the system with respect to a conventional power station based on conventional rotating machines. Using power quality data on voltage dips provided by the
Read more Read lessQuEEN monitoring system, it was possible to analyze changes in the dips counting indices attributed to faults occurring in the Italian transmission network over the period 2009–2024.
These voltage dips indices were correlated with information on installed capacity from renewable sources and conventional ones. First, the analysis was conducted by dividing the statistical sample into the regional macro-areas historically defined in the QuEEN system. The results showed an increase in the number of voltage dips in the South macro-area, which also recorded the largest growth and presence of renewable generation (particularly wind power plants) during the same period. Secondly, a statistical analysis was performed by defining clusters, i.e., temporal aggregates of events due to the same fault. This clustering made it possible to evaluate the geographical distance between them, confirming the propagation trends of voltage dips over the observed years.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | C4_11135_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Italy |
| Study committees |
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| File size | 895 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
ZANONI Michele - RSE
Keywords
voltage dips propagation, inverter-based resources (IBRs), power quality, distribution systems, wide area monitoring systems (WAMS)
