pandapipes 0.12.0

What's Changed

[0.12.0] - 2025-06-27

• [ADDED] transient heat transfer timeseries simulation
• [ADDED] pressure_control_trace in simple_plotly
• [ADDED] explicit call of Sphinx-Config file
• [ADDED] possibility for heat consumer to be considered in nxgraph
• [CHANGED] loading of JSON files with unknown objects as simple dicts is possible now
• [CHANGED] GitHub Actions test workflow to speed up execution time
• [CHANGED] removed duplicated code from calculate_darivates_thermal
• [CHANGED] variable names "VLRLCONNECT" to "FLOW_RETURN_CONNECT"
• [CHANGED] heat_consumer improved stability
• [CHANGED] e2n renaming in documentation
• [CHANGED] Correct controller documentation
• [CHANGED] avoid bool(in_service) for bulk create functions
• [CHANGED] buildup igraph
• [CHANGED] default output writer to log only existing components to avoid errors
• [FIXED] docs_check test pipeline
• [FIXED] a bug in bidirectional calculation for timeseries calculations for timesteps with qext_w=0
• [FIXED] imports and dependencies from pandapower
• [FIXED] correction of how to handle input temperature at circ pumps

Full Changelog: v0.11.0...v0.12.0

v0.12.0.dev3

What's Changed

• Fix/fix t gen by @SimonRubenDrauz in #718
• update version number by @SimonRubenDrauz in #719

Full Changelog: v0.12.0.dev2...v0.12.0.dev3

v0.12.0.dev2

What's Changed

• bugfix qzero problem by @SimonRubenDrauz in #684
• speeding up tests in GA by @jthurner in #673
• remove duplicated code by @SimonRubenDrauz in #678
• improving stability and giving hints about possible problems by @SimonRubenDrauz in #686
• add explicit call of Sphinx-Config file by @jkisse in #687
• Fix/e2n renaming by @SteffenMeinecke in #689
• Update fluids.rst by @jkisse in #691
• Update README.rst (Logos) by @jkisse in #692
• Correct controller documentation by @harrahx3 in #695
• heat consumer considered or not in nxgraph by @SimonRubenDrauz in #696
• avoid bool(in_service) for bulk create functions by @dlohmeier in #697
• Allow JSON deserialization of networks with unknown objects by @dlohmeier in #665
• [FIX] fixed imports and dependencies to pandapower 3.0.0 by @vogt31337 in #705
• Feature/ buildup igraph by @dlohmeier in #701
• check name change by @SimonRubenDrauz in #699
• Transient heat transfer by @dlohmeier in #709
• Modified output writer to log only existing components to avoid errors by @AfaqJ in #712
• 0.12.0.dev2 by @SimonRubenDrauz in #717

New Contributors

• @jthurner made their first contribution in #673
• @harrahx3 made their first contribution in #695
• @AfaqJ made their first contribution in #712

Full Changelog: v0.12.0.dev1...v0.12.0.dev2

pandapipes 0.12.0.dev1

What's Changed

• fixed docs_check pipeline by @mfranz13 in #664
• Connectivity vlrl by @SimonRubenDrauz in #668

Full Changelog: v0.11.0...v0.12.0.dev1

pandapipes 0.11.0

Full Changelog:

• [ADDED] heat_consumer plotting
• [ADDED] variable "u_w_per_m2k" to std_type pipe
• [ADDED] standard district heating pipe types
• [ADDED] support for Python 3.12
• [ADDED] t_outlet_k to result tables of branch components
• [ADDED] relying tests, to check the ability to work with pandapower develop
• [ADDED] bidirectional calculation mode for heat calculations
• [CHANGED] heat_consumer to enable temperature control
• [CHANGED] switched from setup.py to pyproject.toml
• [CHANGED] variable "alpha_w_per_m2k" to "u_w_per_m2k"
• [CHANGED] option "all" for pipeflow heat calculations to "sequential", the new option is "bidirectional"
• [CHANGED] volume flow in result tables instead of normalized volume flow for non gas fluids
• [CHANGED] introduction of slack mass flow into nodes as solved variable
• [CHANGED] circulation pumps are now branches and thus cannot generate or consume mass
• [FIXED] Pressure plot not working for circ pump
• [FIXED] volume flow rate for incompressible fluids based on real density, thus in this case results are renamed from "vdot_norm_m3_per_s" to "vdot_m3_per_s"
• [FIXED] some imports from pandapower
• [FIXED] NAN to nan because of numpy changes
• [FIXED] if velocity in a branch is negative to get corrected nodes from the branch pit
• [FIXED] plot pressure profile not working for circulation pump sources
• [FIXED] Infeed switches are considered correctly
• [FIXED] Heat consumers with qext_w = 0 and temperature control ignore temperature set points
• [FIXED] alpha also applied to mdot
• [REMOVED] support for Python 3.8 due to EOL

More Details: v0.10.0...v0.11.0

pandapipes 0.10.0

What's Changed

• Added unsupplied_junctions and elements_on_path to pandapipes by @mfranz13 in #592
• Made some node entries more global than just in pipe by @dlohmeier in #602
• fixed error for setting output pressure in case of oos circulation pumps by @dlohmeier in #595
• description-file is deprecated. Renamed it to description_file. by @SimonRubenDrauz in #589
• renamed JAC_DERIV_DT1 to JAC_DERIV_DTOUT in branch_idx by @dlohmeier in #598
• Simple heat consumer implementation by @dlohmeier in #599
• Props norm by @SimonRubenDrauz in #597
• Release 0.10.0 by @EPrade in #608

New Contributors

• @mfranz13 made their first contribution in #592

Full Changelog

• [ADDED] function for plotting pressure profile
• [ADDED] function for calculating distance to junctions
• [ADDED] topology function for returning unsupplied junctions
• [ADDED] topology function for returning elements on path
• [ADDED] function for getting all branch-component table names
• [ADDED] function for getting all branch-component models
• [ADDED] component 'heat_consumer' that combines the two components heat_exchanger and flow_control
• [CHANGED] moving generalizing pit entries up from specific components to the abstract class
• [CHANGED] 'JAC_DERIV_DT1' to 'JAC_DERIV_DTOUT'
• [CHANGED] solving for minit instead of vinit
• [CHANGED] distinct max. iteration settings for hydraulic and thermal calculation
• [CHANGED] default tolerances from 1e-4 to 1e-5
• [FIXED] results of old grid are wrong, pipeflow needs to be conducted again
• [FIXED] taking norm density instead of real density in Darcy-Weisbach equation
• [FIXED] in circulation pumps only junctions in-service are considered

pandapipes 0.9.0

• [ADDED] multiple creation of heat exchanger
• [ADDED] support Python 3.11
• [ADDED] after the connectivity check, intercept the pipeflow
• [ADDED] biomethane as additonal fluid
• [ADDED] result tables modularly
• [CHANGED] dropped support for Python 3.7
• [CHANGED] connectivity check now separated by hydraulics and heat_transfer calculatio
• [CHANGED] dynamic creation of lookups
• [CHANGED] components can have their own internal arrays for specific calculations
• [CHANGED] changing from setuptools flat-layout into src-layout
• [CHANGED] calculate thermal derivative globally, adaptions before/after component-wise
• [CHANGED] moving 'result_extraction' under pf folder
• [FIXED] in STANET converter: bug fix for heat exchanger creation and external temperatures of pipes added
• [FIXED] build igraph considers all components
• [FIXED] creating nxgraph and considering pressure circulation pumps correctly
• [FIXED] error in tutorial 'circular flow in a district heating grid'
• [FIXED] caused error during 'pip install pandapipes'
• [REMOVED] branch TINIT removed as it is not a solution variable, temperature determined on the fly
• [REMOVED] 'converged' setting from options

pandapipes 0.8.5

• [FIXED] consider ambient pressure in calculation of compression power for pumps/compressors
• [FIXED] np.bool error in pipeflow calculation due to deprecation of np.bool
• [FIXED] use igraph package instead of python-igraph (has been renamed)
• [ADDED] gas specific calculation of heat capacity ration kappa = cp/cv (for pumps/compressors)
• [REMOVED] Python 3.7 removed from test pipeline due to inconsistencies with pandapower

pandapipes 0.8.4

• [FIXED] added flow control to nxgraph
• [FIXED] there was a bug when calculating pump pressure
• [FIXED] if all pumps are out of service, the pipeflow did not converge
• [FIXED] remove unnecessary checkout in release.yml and tutorial tests

For full changes see CHANGELOG.rst.

pandapipes 0.8.3

• [FIXED] inconsistency between testpypi and pypi