Summary
The growing integration of renewable energy into power systems has significantly altered their short-circuit fault response characteristics. This study employs a fast positive-sequence quasisteady-state short-circuit calculation method suitable for large-scale grids with nonlinear power sources. It investigates how expanding line capacity, deploying battery energy storage systembased grid-forming inverters (BESS GFM), and enhancing their overcurrent capabilities influence the mitigation of fault propagation and overall system fault tolerance across varying levels of renewable energy penetration. Through short-circuit calculations on multiple grid topologies and parameter importance analysis under economic constraints, the results indicate that in future grids with the phase-out of synchronous generators, raising BESS GFM share is the most effective way to limit fault impact and boost grid resilience. Additionally, improving the overcurrent capability of BESS GFM can further reduce the scope of fault-affected areas.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | C1_12014_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Austria |
| Study committees | |
| File size | 1 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
ZHANG Ziqian - Graz University of Technology; SCHÜRHUBER Robert - Graz University of Technology; REN Mingyao - Northeast Electric Power University; LEHMAL Carina - Graz University of Technology; LIU Chuang - Northeast Electric Power University
