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Release v0.9.0
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@BDonnot BDonnot released this 29 Jul 08:20
· 60 commits to master since this release
0.9.0
df9d3c0

Major focus on this release:

  • wheels are now compiled with numpy 2 to make them compatible with both numpy 1.something and 2.something
  • some accelaration on the DC powerflows, especially the PTDF and LODF with some bug fixes there
  • clearer interface to make the difference when data are retrieved with bus id sent to the solver (internal, should not be used) and bus id from the gridmodel

Breaking changes

  • [BREAKING] installing pandapower lightsim2grid does not require anymore to install
    pandapower (you can initialize GridModel with pypowsybl or pandapower if you want). To make it both
    cleaner and clearer the function lightsim2grid.gridmodel.init has been removed.
    Please use lightsim2grid.gridmodel.init_from_pandapower or
    lightsim2grid.gridmodel.init_from_pypowsybl from now on
  • [BREAKING] the previous gridmodel.get_ptdf() function was wrongly labelled with the
    "solver" bus id and not the gridmodel bus id which could cause issue when it was computed
    on some grid configuration. It has now been fixed (so the gridmodel.get_ptdf returns the
    proper things). If you want the previous behaviour, you need to use gridmodel.get_ptdf_solver()
  • [BREAKING] similarly, gridmodel.get_Ybus(), gridmodel.get_dcYbus(), gridmodel.get_Sbus()
    and gridmodel.get_dcSbus() now return things in the gridmodel bus ordering. For the previous
    behaviour you can use gridmodel.get_Ybus_solver(), gridmodel.get_dcYbus_solver(),
    gridmodel.get_Sbus_solver() and gridmodel.get_dcSbus_solver()
  • [BREAKING] the more rational logic above also extends to all the functions listed in the
    table below:
Function with behaviour change Name of the new function having the same behaviour
gridmodel.get_ptdf() gridmodel.get_ptdf_solver()
gridmodel.get_Ybus() gridmodel.get_Ybus_solver()
gridmodel.get_dcYbus() gridmodel.get_dcYbus_solver()
gridmodel.get_Sbus() gridmodel.get_Sbus_solver()
gridmodel.get_dcSbus() gridmodel.get_dcSbus_solver()
gridmodel.get_pv() gridmodel.get_pv_solver()
gridmodel.get_pq() gridmodel.get_pq_solver()
gridmodel.get_slack_ids() gridmodel.get_slack_ids_solver()
gridmodel.get_slack_ids_dc() gridmodel.get_slack_ids_dc_solver()
gridmodel.get_slack_weights() gridmodel.get_slack_weights_solver()
gridmodel.get_V() gridmodel.get_V_solver()
gridmodel.get_Va() gridmodel.get_Va_solver()
gridmodel.get_Vm() gridmodel.get_Vm_solver()
gridmodel.get_J() gridmodel.get_J_solver()
gridmodel.get_Bf() gridmodel.get_Bf_solver()

Bug fixes

  • [FIXED] the change_solver in the ContingencyAnalysis did not work correctly.
    More specifically the solver type used might not be correct if changed which could
    lead to wrong Ybus being passed to the solver.
  • [FIXED] some compatibility mode with python 3.7
  • [FIXED] a bug when "turned off" generator were not PV (slack was
    "turned off" when its target P was 0. But still the slack so ends up producing something...)
  • [FIXED] (consistency with pandapower) when an intial powerflow is run
    to initialized an AC powerflow, the initial voltages are 1 pu (and
    not gridmodel.get_init_vm_pu() as previously).
  • [FIXED] gridmodel.get_ptdf() now have the
    normal "gridmodel" bus id representation and not the "solver" bus ordering.
  • [FIXED] gridmodel.get_lodf() issue wrong results in case of some
    topological modification
  • [FIXED] calls to methods such as gridmodel.get_pv or gridmodel.get_V
    or gridmodel.get_Ybus could lead to severe crashes (segmentation fault)
    on some (rare) cases. Now an exceptions should be thrown in these cases.
  • [FIXED] basic backward compatibility is ensured and tested for legacy grid2op >= 0.9.1.post1
    Not all features are tested and only 1.x versions are tested
    (ie 1.1 or 1.2 but not 1.2.1, 1.2.2, 1.2.3 etc.) and only for python 3.11
  • [FIXED] a bug when using LightSimBackend with some old (but not too old) grid2op
    versions.

New features

  • [ADDED] it is now possible to deactivate the support for shunts by
    subclassing the LightSimBackend class and setting the shunts_data_available
    to False
  • [IMPROVED] in the ContingencyAnalysis class, the underlying cpp model will now
    perform an initial powerflow.

Improvements

  • [IMPROVED] distributed wheels are now compiled (whenever possible) with numpy 2.
    This makes them compatible with both numpy 1.x.y and numpy 2.z.t versions.
  • [IMPROVED] tests are now performed when lightsim2grid is compiled with
    the latest clang (18) and gcc (14) versions on the CI using python 3.11
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