Change log#

Note that version numbering follows the Semantic Versioning principle.

v0.5.0#

New features#

  • Overhead line types can now be defined in terms of conductor data and geometric arrangement (Arif Ahmed).

  • Added standard form object for generating the standard form of linear optimization problems.

  • Added local-approximation variant for linear electric grid model.

  • Added linear model set for electric grid model, which enables defining separate linear models for each time step.

  • Added power flow solution set, to obtain power flow solutions more conveniently for multiple time steps.

  • Added pre-solve method for DER model set, to obtain baseline nominal power time series for flexible DERs.

Changes#

  • Improved / simplified define_optimization...() methods for most use cases.

  • Switched from multiprocess to ray for parallel processing for performance reasons.

v0.4.1#

Fixes#

  • Updated environment.yml.

  • Updated version indicators.

v0.4.0#

New features#

  • Added problems module with definitions for nominal operation problem (simulation) and optimal operation problem (optimization).

  • Added high-level API for executing optimal & nominal operation problems.

  • Added various DER models.

  • Enabled most DERs for thermal grids (Verena Kleinschmidt).

  • Added ability to define electric grid model as single-phase-approximate.

  • Added Z-Bus power flow solution method (Arif Ahmed).

  • Added plots module (work-in-progress).

  • Added ability to set local configuration with config.yml.

  • Added ability to set base units for apparent power, voltage and thermal power for in scenario definition.

Changes#

  • Moved implementation of optimization problems from Pyomo to CVXPY for performance improvements.

  • Reformulated optimization constraints to use normalized values for improved numerical performance.

  • Improved FLEDGE definition data format documentation.

  • Refactored DER model data definition format.

  • Refactored price data object.

  • Various fixes in linear electric grid model model and DLMP calculations.

  • Introduced various error messages for common issues.

v0.3.0#

New features#

  • Moved to Python as main implementation language.

  • Extended linear electric models with methods for defining optimization variables / constraints.

  • Added thermal grid model.

  • Added linear thermal grid model with methods for defining optimization variables / constraints.

  • Added DER models and integrated CoBMo for flexible building models.

  • Added methods for defining operation limits and obtaining DLMPs for electric and thermal grids.

  • Provided various example scripts for running optimal operation problems for DERs / electric grids / thermal grids / multi-energy grids.

v0.2.0#

Auxiliary Release#

  • Snapshot before moving to Python as main implementation language.

v0.1.0#

Initial release#

  • Initial set of modules with Julia as main implementation language.