Next TSC meeting


Hi everybody,


Our next TSC meeting will be on June the 30th, 13h30, on Teams: Cliquez ici pour participer à la réunion


For this public meeting, it would be great if we follow these items:


Next release will be on the end of July or on the beginning of September. This release of powsybl-core already contains:


-          IIDM: limit getters return optionals. It is a breaking change.

-          PowerFactory importer improvements.

-          Short-circuit: clean and refactoring.

-          [Expected] In the sensitivity analysis API, the results give a list of contingencies. This is going to change for a list of ContingencyStatus, that gives the status, for each contingency, of the computation (FAILED, CONVERGED, NO_IMPACT).

-          [Expected] A first version of the security analysis API with remedial action: simple and non-exhaustive in order to start the POC on open-loadflow implementation.

-          [WIP] Sets of operational limits: postponed. We are going to find a way to use the private extension currentLimitsPerSeason and properties.


Release train 1.2.1 (Release v1.2.1 · powsybl/powsybl-dependencies (, based on powsybl-core 4.9.1 (Release v4.9.1 · powsybl/powsybl-core (


-          Note that a patch release of powsybl-core has been published : this release introduces a configuration parameter for CGMES import, which allows the source for IIDM identifiers to be set to rdf:id instead or mRIDs.

-          Please look at the release notes for more details about this release train.


Other repositories:

-          Florian: single line diagram and network area diagram.

-          Sylvain: pypowsybl.

-          OLF:

Support of ThreeWindingsTransformer contingency for sensitivity and security analysis.

[WIP] Support of shunt conductance.

[Excepted] New incremental transformer voltage control outer loop.

[WIP] Support of contingency propagation for sensitivity analysis, make it optional.

[WIP] Work on generators connected to the same bus but controlling two different buses -> change the exception by a warning first.

-          powsybl/powsybl-starter (

-          powsybl/powsybl-benchmark (

-          IIDM C++, no release for the moment, still supporting until IIDM 1.5.0, WIP.

-          WIP: non regression testing



-          Integration of Dynawo : redesign for next release, then work by Dynawo team ;

-          Time series : benchmarks on time scale DB ;

-          Network modifications improvement -> we need to write issues in order to have a collaborative organization on that topic ;

-          Increasing the shortcircuits API: REX after models integration and work around parameters

-          TODO: fusion of balances-ajustement and powsybl-enstoe?

-          TODO: we are late about documentation.

-          Multi component results for security analysis API.

-          The support of EMF in pypowsybl

-          Discussion about fictitious switch in CGMES

-          Other subjects?

Thanks for joining the TSC. Remember that meetings are scheduled here:

powsybl-tsc@... | Calendar


See you soon !





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