Storage modelling - PandaPower/PowerModels interface

[mttb91]

Hi,

when converting a PandaPower network that includes a storage object to PowerModels, a generator object with unlimited active/reactive power rating (i.e. pmin, pmax = -1e+09, +1e+09 respectively) is created in PowerModels at the same bus where the storage is specified.

I first found out this behavior while running the storage_powermodels tutorial. By accessing the PowerModels network data dictionary through net._pm['gen'] command, it can be seen in the following screenshot that a second generator object is created at the same bus of the storage object defined in PandaPower. The generator active power profile is highly different from the storage one.

Is this a wanted behavior? If so, may you explain it?
Apologies if it is a dummy question as I am new to the PandaPower/PowerModels interface.

I am running PandaPower 2.7.0, pyjulia 0.5.6, Julia 1.5.4

Thank you very much!

[MMajidi137]

@mttb91 hi, in the old versions of powermodels there was no storage model,so in pandaower converter, to_pm.py, storage is defined as bidirectional load (indeed: load+gen). however, the converter needs to be updated as storage is defined separately in powermodels.