pandapower 2.12.0

• [ADDED] feature: storing to json and restoring of nets with pandas multiindex dataframes and series
• [ADDED] several 'marker size legends' sizes + a spec. color can be passed to weighted_marker_traces
• [CHANGED] changed default optimization method in the estimation module from OptAlgorithm to "Newton-CG"
• [CHANGED] cim2pp converter documentation fixes
• [CHANGED] make legend item size constant in :code:simple_plotly
• [FIXED] add (nan) field "coords" to bus geodata in create_cigre_network_hv to avoid fatal error when exporting to Excel
• [FIXED] documentation of powerfactory converter
• [FIXED] create.py: if optional arguments are None or nan, the optional columns will not be added
• [FIXED] add tap_dependent_impedance attributes to trafo3w instead of trafo, in create.create_transformer3w and create.create_transformer3w_from_parameters
• [CHANGED] renamed functions: drop_from_group() -> detach_from_group(), append_to_group() -> attach_to_group(), check_unique_group_names() -> check_unique_group_rows()
• [CHANGED] attach_to_group(): enable handling of different reference_column passed than existing
• [ADDED] toolbox function :code:count_elements, :code:drop_elements, :code:res_power_columns
• [ADDED] new group functions :code:element_associated_groups, :code:attach_to_groups, :code:group_res_power_per_bus, :code:group_index
• [CHANGED] repr (used by print(net)) now considers groups appropriately
• [ADDED] documentation of DeprecationWarning process
• [ADDED] add TDPF parameters as optional parameters for create line functions in create.py
• [CHANGED] remove support for Python 3.7 and add Python 3.11
• [CHANGED] split toolbox.py -> better overview, avoiding circular imports
• [CHANGED] aim for toolbox parameter name consistency: element_types, element_index (changes to mandatory parameters only)
• [CHANGED] output type of toolbox function :code:element_bus_tuples: set -> list
• [ADDED] import of internal packages such as control or converter
• [ADDED] group consideration in toolbox replace element functionality
• [ADDED] implementation of the "recycle" functionality for DC power flow and timeseries with run=pp.rundcpp
• [ADDED] calculate branch results for current magnitude and angle, voltage magnitude and angle, active and reactive power for short circuit calculation
• [ADDED] implement the superposition method ("Type C") for the short circuit calculation - consider pre-fault voltages
• [FIXED] Trafo control stepping direction for side=="hv"
• [ADDED] feature: protection - implementation of over-current relay
• [FIXED] Shunt admittance modelling for 3 phase calculations
• [ADDED] bulk creation function create_storages and create_wards
• [ADDED] FACTS devices Shunt Var Compensator (SVC) and Thyristor-Controlled Series Capacitor (TCSC) as new pandapower elements net.svc and net.tcsc

For the full list of changes see CHANGELOG.rst

pandapower 2.11.1

• [ADDED] a 'marker size legend' (scale_trace) can be displayed for weighted_marker_traces with plotly
• [FIXED] bugfix in toolbox._merge_nets_deprecated

For the full list of changes see CHANGELOG.rst

pandapower 2.11.0

• [ADDED] plotting function for dclines (create_dcline_collection), also added in simple_plot
• [ADDED] calculation of overhead line temperature in Newton-Raphson with two simplified methods (Frank et al. and Ngoko et al.)
• [ADDED] group functionality
• [ADDED] auxiliary function warn_and_fix_parameter_renaming to throw a derpecation warning (not an Error) if old name of a parameter is used
• [ADDED] zero-sequence parameters for net.impedance
• [ADDED] File I/O: Can now save and load pandapower serializable objects to Excel, PostgreSQL
• [ADDED] additional_traces (prepared by the user) can be passed to simple_plotly
• [ADDED] Added converter CGMES v2.4.15 to pandapower
• [CHANGED] TDPF: rename r_theta to r_theta_kelvin_per_mw, add r_theta_kelvin_per_mw to net.res_line
• [CHANGED] Compatibility with pandas 1.5, dropped "six" dependency
• [CHANGED] from_ppc(): revision of indexing and naming of elements
• [CHANGED] Complete revision of validate_from_ppc()
• [CHANGED] Improve defaults, add docstrings and rename parameters of plot_voltage_profile() and plot_loading()
• [FIXED] Bug with user_pf_options: _init_runpp_options in auxiliary.py ignored user_pf_options when performing sanity checks
• [CHANGED] merge_nets(): revised for groups and new behavior regarding indexing; reindex_elements(): revised for groups, don't overwrite column "index" and feature parameter lookup

For the full list of changes see CHANGELOG.rst

pandapower 2.10.1

minor release (bugfix):

• [FIXED] remove the parameter ignore_order in DeepDiff (eq), add hash to JSONSerializableClass

pandapower 2.10.0

• [ADDED] added arbitrary keyword arguments, **kwargs, in all create-functions
• [FIX] from_ppc() converter and power system test cases: add missing factor for tap_side=="lv"; change tap_side to "hv" for all test cases (were converted without new factor, so as the tap_side is "hv")
• [ADDED] from_mpc() converter: added functionality to import .m files via external package
• [CHANGED] from_ppc() converter: added option of tap_side and essential speed up
• [CHANGED] drop support of pandas versions < 1.0
• [ADDED] parameter in_ka for rated switch current
• [ADDED] current and loading result for switches
• [FIXED] bug for disabled continous tap controllers
• [ADDED] eq method for JSONSerializableClass using deepdiff library, and adjusted pp.nets_equal to use it. Requires deepdiff
• [CHANGED] enable calculating PTDF for a subset of branches
• [ADDED] in from_json one can pass a new variable of type dict called 'replace_elements'. Dict values replace the key in the loaded json string.

For full changes see CHANGELOG.rst.

pandapower 2.9.0

• [ADDED] added support for Python 3.10
• [ADDED] added a function to pandapower.plotting to set line geodata from the geodata of the connected buses
• [ADDED] plotly hover information will indicate parallel lines, if parallel > 1
• [ADDED] 'showlegend' option for simple_plotly
• [CHANGED] rename u by vm (voltage magnitude) in file and functions names
• [FIX] plotly: only one legend entry for all lines/trafos instead of single entries for each one
• [FIX] fixed deprecation warning for pandas indexing with set (sets changed to lists inside .loc)
• [FIX] fixed hover information for lines in plotly
• [CHANGED] use numpy to vectorize trafo_control
• [ADDED] generic functions in pandapower.toolbox to read and write data to/from elements
• [CHANGED] remove code duplication in const_control, characteristic_control
• [ADDED] added the funtionality to import grid data from PowerFactory
• [FIXED] failing tests for PowerModels integration due to the missing pm option "ac"

For full changes see CHANGELOG.rst.

pandapower 2.8.0

• [CHANGED] drop support for Python 3.6
• [ADDED] new object table "characteristic", new class "Characteristic" and "SplineCharacteristic" that are callable and return a value based on input according to a specified curve
• [ADDED] TapDependentImpedance controller that adjusts the transformer parameters (e.g. vk_percent, vkr_percent) according to the tap position, based on a specified characteristic
• [ADDED] tap dependent impedance internally in build_branch: transformer (2W, 3W) parameters (e.g. vk_percent, vkr_percent) are adjusted according to the tap position based on a specified characteristic in the optional columns
• [FIXED] revise to_ppc() and to_mpc() init behaviour and enable importing additional variables from MATPOWER case format
• [ADDED] with the option "distributed_slack" for pp.runpp: distributed slack calculation to newton-raphson load flow; new column "slack_weights" for ext_grid, gen and xward; only 1 reference bus is allowed, any further reference buses are converted to PV buses internally
• [CHANGED] improved the integration with the package lightim2grid (fast power flow backend written in C++), add the test coverage for using lightsim2grid (for both versions, single slack and distributed slack, see https://lightsim2grid.readthedocs.io/en/latest/ on how to install and use lightsim2grid) #1455
• [ADDED] add_zero_impedance_parameters(): convenience function to add all required zero-sequence data for runpp_3ph from std_types and apply realistic assumptions
• [CHANGED] adjusted create.py functions to also include zero-sequence parameters

For full changes see CHANGELOG.rst.

pandapower 2.7.0

• [ADDED] Optimized the calculation of single/selected buses in 1ph/2ph/3ph short-circuit calculation
• [ADDED] Multiple example networks and network variations from IEC 60909-4
• [ADDED] USetTapControl that adjusts the setpoint for a transformer tap changer, based on a specified result variable (e.g. i_lv_ka)
• [CHANGED] ConstControl can now also change attributes of other controllers, if the parameter "variable" is defined in the format "object.attribute" (e.g. "object.vm_set_pu")
• [CHANGED] ConstControl is initialized with level=-1 and order=-1 by default to make sure that it runs before other controllers

For full changes see CHANGELOG.rst.

pandapower 2.6.0

• [ADDED] Optimized the calculation of single/selected buses in 1ph/2ph/3ph short-circuit calculation.
• [ADDED] New options for run_control to 'continue on divergence' and 'check each level' PR #1104.
• [CHANGED] Removed official Python 3.5 support due to end of its life #994.
• [CHANGED] Deleting set_q_from_cosphi from ConstControl and deprecation warning. Use a separate ConstControl for setting Q timeseries instead.
• [FIXED] init_ne_line to work with switches and parallel lines. Needed for PowerModels TNEP.

For full changes see CHANGELOG.rst.

pandapower 2.5.0

• [ADDED] documentation on how to install Gurobi as a PowerModels.jl solver.
• [ADDED] the voltage set point of external grids can now be optimized by the OPF.
• [ADDED] the Powermodels AC OPF can now be used with line loading constraints.
• [CHANGED] all controllers and output writers do not have net as attribute any more.
• [CHANGED] internal data structure tutorial contains now an example of a spy plot.
• [FIXED] recycle values None and False are considered equally --> recycle usage is skipped.
• [FIXED] fixes related to three winding transformers