Release Notes

Version 0.5.1

Release Date: July 12, 2025

Added

• Introduced the optimal keyword in the function powerSystem to skip importing data related to optimal power flow analyses, see Partial Load for Faster Import.

Other

• Removed unused parameters from the PowerSystem type.

Version 0.5.0

Release Date: July 5, 2025

Breaking

• Introduced a new parser for PSSE case files.
• Added support for KLU factorization.
• Reformulated interval constraints in optimal power flow as two separate constraints.
• Introduced support for extending the optimal power flow formulation.
• Implemented the Peters-Wilkinson method for solving all state estimation models.

Added

• Functions to display the currently active templates.
• Functions to show the unit system used for keyword interpretation.
• Functions to print data associated with specific components.
• Support for configuring label types for each group of power system components and measurement types.
• Ability to read bus names from MATPOWER and PSSE imports.
• Support for the setInitialPoint! function across all LAV estimators.

Fixed

• Fixed issues related to function precompilation.
• Corrected verbosity settings in optimization methods when the silent flag is enabled.

Other

• Optimized memory allocation in all power flow algorithms.
• Improved memory handling in all WLS state estimation algorithms.
• Updated default generator output power limits.
• Improved efficiency in merging disconnected flow islands.
• Removed the requirement for a generator at the slack bus in state estimation models.

Version 0.4.0

Release Date: April 11, 2025

Breaking

• Introduced references to PowerSystem and Measurement types, allowing functions to be used with only the parent arguments.
• Enhanced computational efficiency of LAV estimators by removing deviation variables associated with state variables.
• Renamed type definitions for improved readability.

Added

• Bad data Chi-squared test function chiTest.
• Wrapper function for creating PowerSystem and Measurement types ems.

Fixed

• Update analysis functions now correctly apply updates, even changes are made regardless of the specific type.
• Adjusted tables and figures in the documentation for better compatibility with dark themes.

Other

• Added iteration counter variables to iterative algorithms.
• Enabled support for including current magnitude measurements in squared form for AC state estimation.

Version 0.3.0

Release Date: March 10, 2025

Breaking

• Allowing macros to execute at the code line where they are called.

Added

• Wrapper functions powerFlow! and stateEstimation!.

Fixed

• Conversions between SI units and per-unit system
• Various bugs related to printing data.
• Various bugs related to integer labels.

Version 0.2.0

Release Date: October 17, 2024

Added

• Power system printing functions:
  • printBusData,
  • printBranchData,
  • printGeneratorData.
• Measurement printing functions:
  • printVoltmeterData,
  • printAmmeterData,
  • printWattmeterData,
  • printVarmeterData,
  • printPmuData.
• Constraint printing functions:
  • printBusConstraint,
  • printBranchConstraint,
  • printGeneratorConstraint.
• Integer based labeling.

Version 0.1.0

Release Date: April 19, 2024

Breaking

• Initial stable public release.