Hi everybody,

I hope you are all fine and that you envoy your vacation. I have to cancel the TSC meeting because many committers are out of the office today.

In order to prepare the back-to-work, just some relevant information :

-          Next release of powsybl-core will be on September the 14^th. The release train should follow. We already have an alpha-1 release, but a release candidate will be published one week before.

-          In order to be ready, there are some pending PRs. If I miss some important features or bug fixes, just tell me.

In the Pull requests · powsybl/powsybl-core (github.com) of powsybl-core, the next-release PRs to be finished, reviewed and merged are :

-          There is an issue with the CGMES import because SequenceNumber is optional but strongly recommended in Europe. So we have decided to rely on it, but it leads to issues for American CGMES files. Miora has started to try to find a solution that preserves performance : [WIP] SequenceNumber can be optional in CGMES import by miovd · Pull Request #2241 · powsybl/powsybl-core (github.com) @Luma if you can help Miora finding a solution, it could be nice.

-          I have opened a PR to fix the BUS_VOLTAGE sensitivity factor in order to stay in bus/breaker view Fix sensitivity factor model reader for BUS_VOLTAGE factor by annetill · Pull Request #2240 · powsybl/powsybl-core (github.com) @Sylvain if you have time to review this before your vacation, it could be helpful.

-          Add convenient methods to retrieve bus-breaker buses from bus-branch bus ID by miovd · Pull Request #2239 · powsybl/powsybl-core (github.com) I think it is a very useful feature, I hope it will be ready for next release. Unit testing is low for the moment.

-          We have decided to rename the topology network modifications AttachNewLineOnLine and AttachVoltageLevelOnLine and to increase documentation (Rename Topology network hypotheses with Connect instead of Attach by miovd · Pull Request #2238 · powsybl/powsybl-core (github.com)). There are some impact on a pypowsybl PR that interfaces these methods and impacts on two PRs that codes the reverse changes (PR 2230 and PR 2228). So we have to agree on names and merge it as soon as possible.

-          Geoffroy has open a PR for operations on matrix Improve dense matrix multiplication and addition performance by geofjamg · Pull Request #2236 · powsybl/powsybl-core (github.com) : @Geoffroy : just tell me if you need help and if you need this PR for the next release.

-          Sylvain has found an issue on XML serialization of BranchObservability. @Miora : waiting for your review and merge.

-          There are two PRs for reverse changes of attach new line on line and attach voltage level on line (PR 2230 and PR 2228), review of Geoffroy expected and be careful of the renaming PR explained above. Note that Florian is out of the office until September the 7^th.

-          There are two PRs for PowerFactory importer but there are draft PRs. @Luma : do you need these PRs to be merged for next release ?

-          First step towards reproducible itools-packager builds: setTime in the zip by jonenst · Pull Request #2220 · powsybl/powsybl-core (github.com) @Jon : there is no reviewer for your PR on itools. Do you want this PR for next release ?

-          Miora has opened a PR to introduce builders for network modifications (Proposition for network modification builder by miovd · Pull Request #2218 · powsybl/powsybl-core (github.com)) : good idea. Not urgent for the next release and unit tests needed.

-          Luma has opened a PR to be able to import a CGMES file with all profiles in a single XML file (Allow boundaries to be assembled with other network data in the same instance file by zamarrenolm · Pull Request #2216 · powsybl/powsybl-core (github.com)). @Miora : we are waitning for your review and this PR must be in the next release.

-          This PR (Network modification: create feeder bay by colinepiloquet · Pull Request #2214 · powsybl/powsybl-core (github.com)) that creates a bay feeder for any injection must be available for next release. @Coline : the Javadoc is too poor for the moment, especially for utility functions. And Geoffroy has made a comment.

-          Create utility class for compareXml/compareTxt for refactoring purposes by sfid98 · Pull Request #2209 · powsybl/powsybl-core (github.com) is almost ready to be merged. I just have to check the copyright with Lucian before.

-          Reporter new API : what is the status of this work ?

-          Sensitivity analysis: add contingency status in the results by annetill · Pull Request #2186 · powsybl/powsybl-core (github.com) @Geoffroy : I need you review on that PR, whan you find some time… thanks !

Anything else ? I have planned to write an e-mail with my feedback on the security analysis with actions after a draft support on the OpenLoadFlow. @Etienne : if my returns are relevant, it must be included for the next release to minimize breaking changes.

Thanks everybody, just reach me if you need !

Anne