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Latest LF Energy PowSyBl Release Enhances DC Modeling, Sensitivity Analysis, and Security
The LF Energy PowSyBl community has released powsybl-dependencies 2025.3.0, which concludes the last PowSyBl release train. PowSyBl is an open source library dedicated to electrical grid modeling and simulation.
This release corresponds to aligned releases across the PowSyBl repositories. The versions and detailed release notes for each repository are listed in the table below.
| Repository | Version |
| powsybl-core | 7.1.0 |
| powsybl-open-loadflow | 2.1.0 |
| powsybl-diagram | 5.2.0 |
| powsybl-dynawo | 3.1.0 |
| powsybl-entsoe | 3.1.0 |
| powsybl-open-rao | 7.1.0 |
| powsybl-distribution | 2025.3.0 |
| powsybl-starter | 2025.3.0 |
The most noteworthy new features / notable changes are:
- IIDM 1.15: DC detailed model (de)serialization
- CGMES: Detailed DC model CGMES import/export
- PowSyBl Open Load Flow:
- Performance: Significantly improved the speed of AC calculations and introduced multithreaded capabilities for AC Sensitivity Analysis
- Robustness: Introduction of an automatic resolution mechanism for incompatible voltage targets
- Models: Added support for generator equivalent local voltage targets as well as fictitious bus injections simulation
- PowSyBl OpenRAO:
- PST Regulation: If some lines secured by PSTs are overloaded at the end of curative RAO, a PST regulation can be performed to secure them in detriment of other lines (business requirement).
- HVDC optimization: Split HVDC range action into a network action and a range action to be able to optimize set point and deactivate AC emulation when it can improve the situation.
- powsybl-dynawo:
- Add Dynawo generator properties extensions.
- Handle simplifiers on demand and add energized and main connected component simplifiers.
For more information, please read the detailed release notes linked in the table.
