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PowerModels.jl Change Log

Staged

  • Fixed bug in dual reporting in constraint_power_balance_ls (#741)

v0.17.3

  • Added a to file variant of export_matpower
  • Improved correct_bus_types! support for undefined bus type values
  • Improved PSSE parser robustness to invalid CZ, CW and CM parameters in transformers

v0.17.2

  • Added support for ACR formulation with storage
  • Added support for LPAC formulations of OTS and TNEP problems (#708) (thanks to @jay-dave)
  • Added windv*, nomv* and cw values to import_all on PSS/E data files (#629)
  • Strengthened checks for multi-network and multi-conductor in run_model
  • Fixed conversions for transformer tap values in PSSE parser (#629)
  • Fixed keyword arguments in native AC Power Flow solver
  • Fixed star bus bus_type values in three winding transformers
  • Fixed Matpower parser bug when reactive power cost data was present (#729)

v0.17.1

  • Improved robustness of export_matpower to extra model data (#707)
  • Improved the PWL cost data processing during model building (#709)
  • Fixed bugs admittance matrix tools to support inactive buses
  • Fixed PSSE support for multiple three-winding transformers at the same buses (#712)
  • Fixed PSSE transformer status processing (#712)

v0.17.0

  • Updated to new function name convention, details in issue #701 (#555,#656) (breaking)
  • Update to InfrastructureModels v0.5 (breaking)
  • Added support for Memento v1.1
  • Fixed storage reactive power dispatch model, added reactive power control variable (breaking)

v0.16.0

  • Added a native AC Power Flow solver in polar coordinates that uses NLSolve (#590)
  • Added ismulticonductor check on data models
  • Made branch power flow expressions formulation agnostic (#684) (breaking)
  • Changed the PWL cost implementation from a max formulation to a relaxed sos formulation
  • Updated PWL cost data processing to require points that span a generators complete operating range (breaking)
  • Updated correct_bus_types! to correct slack buses and focus on preparation for power flow studies (breaking)
  • Updated ref extensions API to use ref and data dictionaries, not power model types (#668) (breaking)
  • Replaced propagate_topology_status! with simplify_network! (breaking)
  • Moved isolated component removal into deactivate_isolated_components! (#677) (breaking)
  • Removed InitializePowerModel and instantiate_model to use InfratructureModels versions (breaking)
  • Removed export of some functions defined in InfratructureModels (breaking)
  • Removed branch flow variables from generic Power Flow problem specification (breaking)
  • Removed bus type modification from check_reference_bus (breaking)

v0.15.5

  • Made matpower cost data parser more robust to floating point numbers
  • Fixed the type of derived "ncost" values in export_matpower

v0.15.4

  • Updated to utilize generic base functions from InfrastructureModels
  • Fixed the type of derived "ncost" values in correct_cost_functions!

v0.15.3

  • Added support for Memento v0.13, v1.0
  • Added export of optimizer_with_attributes from JuMP v0.21
  • Added support for building storage models with branch flow formulations (#676)
  • Added a linear branch flow formulation (#676)
  • Fixed power balance duals in ACT formulation (#678)

v0.15.2

  • Added support for on/off storage in SOCWRPowerModel
  • Fixed multinetwork solution building bug
  • Fixed solution building bug in variable_demand_factor

v0.15.1

  • Add support for JuMP v0.21

v0.15.0

  • Standardized use of bounded parameter in variable creation (#651)
  • Simplified branch series current variable indexing (breaking)
  • Update solution building infrastructure (#77,#566,#627) (breaking)
  • Moved multi-conductor support into PowerModelsDistribution (breaking)

v0.14.3

  • Fixed solution reporting bug with individual variables

v0.14.2

  • Fixed solution reporting bug when component status did not match bus status

v0.14.1

  • Add support for constant power factor load and shunt decision variables
  • Add basic support for OPF with OLTC and PST variables
  • Update to InfrastructureModels v0.4
  • Add support for switches in propagate_topology_status! (#587) and export_matpower
  • Added storage status to propagate_topology_status! (#662)
  • Fixed PSD bug in cholesky factorization in sparse SDP formulation (#641)

v0.14.0

  • Made storage state constraints more robust in multinetwork data (#653)
  • Changed post_* function names to build_* (#611) (breaking)
  • Updated core function names to instantiate_model and build_result (breaking)
  • Made problem naming more consistent (#644) (breaking)
  • Cleaned up model optimization functions (#643) (breaking)

v0.13.2

  • Added native DC Power Flow solver and AdmittanceMatrix data structures
  • Added PTDF-based OPF problem specification
  • Added iterative flow limit cut OPF solvers (#619)
  • Added IVRPowerModel (rectangular current-voltage formulation) (#622)
  • Improved connected components computation time (#504)
  • Removed Inf bounds from variables (#630)
  • Removed unused functions in solution.jl: get_solution, add_generator_power_setpoint, add_storage_setpoint, add_branch_flow_setpoint, add_dcline_flow_setpoint (breaking) (#637)
  • Fixed a solution reporting bug when the optimizer result count is zero

v0.13.1

  • Added DCMPPowerModel for replication of Matpower's DC model (#612)
  • Reduced memory allocations during PSSE data parsing (#617)
  • Updates for SCS v0.6.3 (#634)
  • Fixed quadratic terms in nonlinear objectives (#621)
  • Fixed incorrect flow bounds based on current flow limits (#631)

v0.13.0

  • Added SOC formulation of the storage model
  • Added support for optional line flow constraints (#576)
  • Simplified PowerModel types (#192) (breaking)
  • Improved multi-conductor support in the storage model (#572) (breaking)
  • Renamed model_constructor to model_type (#192) (breaking)
  • Made all component on/off variables conductorless (#390) (breaking)
  • Require an explicit switch section in the data model (breaking)
  • Fixed naming branch indicator variable (#551) (breaking)
  • Made baseMVA not a global key in multinetwork models (breaking)
  • Fixed bug in bus_storage_lookup (#598)

v0.12.5

  • Update to InfrastructureModels v0.3 and JuMP v0.20
  • Fixed power balance duals in w-space formulations (#591)
  • Dropped CI on Julia v1.0

v0.12.4

  • Fixed support for data without an explicit switch section
  • Fixed support for single values in add_setpoint! and add_dual!

v0.12.3

  • Add switch component (#339)
  • Added component status parameter lookup (#565)
  • Relax JuMP Model type (#582)
  • Fixed conductor semantics in storage devices (breaking)
  • Fixed status-based filtering to support fractional values (#564)
  • Fixed va default start point

v0.12.2

  • Added function for building pwl objective variables and constraints
  • Added check_status to standard data reading checks (#547)
  • Added storage on/off constraints (#552)
  • Added an alternative storage complementary constraint that uses MIP instead of NLP (#552)
  • Fixed a bug in branch status reporting (#553)
  • Fixed a bug in AbstractBFForm version of constraint_voltage_angle_difference (#557)

v0.12.1

  • Fixed a bug in add_setpoint! in the multiconductor case

v0.12.0

  • Significant updates to function naming details in #538 (#268,#454,#499,#533) (breaking)
  • Added component status based filtering to solution building (#523)
  • Added constraint_model_current to bfm formulations (breaking)
  • Updated Matpower "bus_name" to map to bus parameter "name" (breaking)
  • Updated slope and intercept data structure (#521) (breaking)
  • Updated time_elapsed to be a network-wise parameter (#541) (breaking)
  • Updated current variable name from cm to ccm (#366) (breaking)

v0.11.2

  • Added support for pre-computed buspair data (#524)
  • Added source_id to Matpower parser (#512)
  • Added logger_config! to configure the PowerModels logger (#402)
  • Minor improvements to Matpower export function (#388)
  • Removed inequality constraint from theta_ref constraint in the ACR formulation
  • Removed bounds on binary variable constructors (#535)

v0.11.1

  • Added calc_gen_cost to compute the generator cost from the setpoint in the data model
  • Added calc_dcline_cost to compute the dcline cost from the setpoint in the data model
  • Fixed a bug that resulted in an extra call to ref_core!

v0.11.0

  • Update to use JuMP/MOI status values (#276) (breaking)
  • Made power setpoint values required in storage model (#487) (breaking)
  • Added support for extensible ref building (#263) (breaking)
  • Updates PSS(R)E source_id to include string indicating originating component type (#511) (breaking)
  • Renamed data functions to indicate when modification can occur (#441) (breaking)
  • Renamed objective functions to make dcline flow costs more explicit (#364) (breaking)

v0.10.1

  • Refactor connected_components to accept arbitrary edge-types with edges kwarg
  • Fixes bug in warnings inside storage constraints
  • Add Bool to allowed data types in json parse of MultiConductorVector/Matrix
  • Add handling of Inf/NaN values in JSON parser in MultiConductorVector/Matrix

v0.10.0

  • Update to JuMP v0.19/MathOptInterface (breaking)

v0.9.8

  • Added a test network with dangling buses, case5_db.m
  • Fixed voltage bound persistence bug in acr formulation (#497)

v0.9.7

  • Minor fix solve method scope

v0.9.6

  • Added calc_power_balance function for computing bus balance from the data model
  • Added calc_branch_flow functions for computing flows from the data model
  • Added JSON parser with support for multiconductor values
  • Added Base.norm for multiconductorvectors
  • Improved starting point support for branch flow variables
  • Improved starting point of piecewise linear cost function variables
  • Minor improvement to piecewise linear cost function pre-processing
  • Minor fix to multiconductor broadcasting
  • Updated using to import
  • Dropped support for Julia v0.6 and v0.7

v0.9.5

  • Added generator on/off constraints
  • Added opf model with unit commitment (#475)
  • Fixed multiconductor support for ACR formulation
  • Removed support for Julia versions < 1.0
  • Update syntax to be compatible with JuMP v0.19 / MathOptInterface

v0.9.4

  • Added all error messages to memento log
  • Added ability to parse default values in PTI files
  • Updated dict types to Dict{String,<:Any} (#466)
  • Dropped lower bounds on unbounded voltage variables
  • Refactored PTI parsing function names with _ to indicate internal use only
  • Fixed minor typos in docs
  • Fixed a minor bound tolerance bug in OBBT
  • Fixed minor error in conic bfm models (#469)
  • Fixed bug in parsing of PTI transformers (#459)
  • Fixed bug in PTI parsing handling commas or comment characters inside of quotations
  • Fixed bug in PTI parsing where quotation marks were not being properly stripped from String-type data

v0.9.3

  • Added support for heterogeneous cost functions
  • Added automatic simplification of cost functions
  • Improved support for polynomial cost functions
  • Updated default cost function to linear when loading PSSE data
  • Cleaned up generator data in Matpower files
  • Cleaned up generator data in PSS(R)E PTI file parse
  • Fixed source_id in PSS(R)E PTI parse of buses to be only bus id
  • Fixed small PSS(R)E PTI parser errors (unicode handling, reserved characters in comments, error message handling)

v0.9.2

  • Added tracking of modifications in check_network_data
  • Added validate option to parse_file
  • Added silence() function to suppress info and warn messages
  • Improved support for storage units in summary function

v0.9.1

  • Fixed print_summary in Julia v1.0

v0.9.0

  • Added LPAC cold-start approximation
  • Improved support for linear cost functions (breaking)
  • Reorganized power formulation types into core/types.jl
  • Added an abstract type for all active power only models
  • Minor revision of case5_clm, case5_npg and case5_strg test cases (breaking)
  • Minor revision of top-level storage constraints (#413)
  • Minor improvement to dictionary comprehensions
  • Fixed the interpretation of ncost in Matpower data (thanks to @lthurner)
  • Minor bug fix to line charging in check_branch_directions
  • Minor improvement to error messaging during pti parsing
  • Minor breaking changes #363, #391, #408, #429

v0.8.8

  • Added PowerModels specific replicate function
  • Improved storage component data validation checks

v0.8.7

  • Add support for Julia v0.7 and v1.0 (thanks to @jd-lara)

v0.8.6

  • Add support for a generic storage component
  • Added add_setpoint_fixed to improve solution reporting performance
  • Added support for a user provided JuMP model
  • Improved the Matpower data file export function

v0.8.5

  • Improved the optimal power balance problem specification
  • Add SOCWRPowerModel support for the optimal power balance problem
  • Added conductorsless option to add_setpoint
  • Added support for conductor value in add_setpoint scaling
  • Update tests for SCS v0.4

v0.8.4

  • Added SparseSDPWRMPowerModel model (thanks to @kersulis)
  • Added Julia version upper bound
  • Improved OBBT bound update logic

v0.8.3

  • Added support for current limits, issue #342
  • Added a optimal power balance problem specification
  • Added a network flow approximation formulation, NFAPowerModel
  • Added conic variant of the SOCWRPowerModel model, SOCWRConicPowerModel (thanks to @kersulis)
  • Added data simplification for piecewise linear cost functions
  • Added sim_parallel_run_time to OBBT stats
  • Made thermal limits optional in the data model
  • Fixed a bug in quadratic conic objective functions
  • Fixed a bug where dcline reactive variables entered active power only formulations
  • Expanded documentation (mathematical model, formulations, references for formulations)

v0.8.2

  • Added optimality-based bound tightening (OBBT) functionality for the QC relaxations
  • Added branch flow conic forms, e.g. AbstractBFConicForm, SOCBFConicPowerModel
  • Update MINLP solvers used in testing
  • Minor issues closed #328

v0.8.1

  • Strengthened the QCWRTri Power Flow formulation
  • Added support for implicit single conductor to buspairs data
  • Made add_setpoint more flexible when working with a mixture of data types
  • Fixed a bug in TNEP voltage variable definitions

v0.8.0

  • Added support for asymmetric line charging in all formulations
  • Added Matpower data file export function
  • Added mathematical model to documentation
  • Added parsing string data from IO objects
  • Added support for network data with multiple conductors (breaking)
  • Removed explicit series variables from branch flow model
  • Improved helper functions ref, var, con to work with multiple networks and multiple conductors
  • Minor robustness improvements to parsing PTI files
  • Minor issues closed #316

v0.7.2

  • Removed Memento depreciation warnings

v0.7.1

  • Added warning when data is missing in a PTI file
  • Minor tidying of matpower test cases
  • Relaxed variable bounds in BFM to be consistent with BIM

v0.7.0

  • Added component_table function for building matrices from component data
  • Added "source_id" to uniquely identify each component imported from a PTI file
  • Added support for extending PowerModels data with all PTI data fields
  • Extended support for PSS(R)E v33 data (three-winding transformers, two-terminal/vsc hvdc lines)
  • Allow multinetwork as an optional parameter
  • Removed multi-network filter option from objective functions (breaking)
  • Removed option to run multi-network data in single-network models (breaking)
  • Removed add_setpoint_bus_demand function (breaking)
  • Changed parameters and improved performance of KCL constraints (breaking)
  • Improved robustness of matpower data parsing and transformation
  • Improved testing of convex relaxations
  • Changed test MIP solver from GLPK to CBC
  • Fixed bug where "info" messages were not printed by default
  • Fixed bug in dcline cost function unit conversion
  • Fixed bug where not all JuMP variables were anonymous
  • Fixed minor bug in Power Flow models when the data does not specify a reference bus
  • Minor issues closed #251

v0.6.1

  • Moved to Juniper for non-convex MINLP tests
  • Fixed minor bug in non-convex MINLP formulations

v0.6.0

  • Dropped support for Julia v0.5 (breaking)
  • Added basic support for PSS(R)E v33 data (buses, loads, shunts, generators, branches and two-winding transformers)
  • Added support for table-like data summary, #146
  • Added support for network topology processing
  • Added basic support for Branch Flow formulation variants
  • Added support for parsing PTI files into a Dict
  • Refactored implementation of WRM formulation
  • Updated branch mathematical model and Matpower parser to support asymmetrical line charging
  • Added explicit load and shunt components to the PowerModels network data structure
  • Refactored Matlab and Matpower parsing functions
  • Leveraging InfrastructureModels package for Matlab data parsing, #233, #247
  • Migrated logging tools from Logging to Memento
  • Updated struct and type parameter syntax to Julia v0.6
  • Fixed a mathematical bug when swapping the orientation of a transformer
  • Minor issues closed #51, #131, #220

v0.5.1

  • Added support for convex piecewise linear cost functions
  • Added lambda-based convex hull relaxation scheme for trilinear products
  • Added QCWRTri Power Flow formulation
  • Added kcl and thermal limit dual values in linear power flow formulations
  • Fixed bug in QC-OTS formulation

v0.5.0

  • Standardized around branch name for pi-model lines (breaking)
  • Added checking for inconsistent orientation on parallel branches
  • Added support for multiple networks in the JuMP model (breaking)
  • Removed epsilon parameter from constraint_voltage_magnitude_setpoint (breaking)
  • Moved misc models to PowerModelsAnnex (breaking)
  • Removed unnecessary NL constraints from ACR and ACT formulations
  • Removed redundant quadratic constraint from DCPLL formulation
  • Added warning messages for inconsistent voltage set points
  • Fixed branch flow units transformation bug

v0.4.0

  • Added JuMP v0.18 compatibility
  • Added pm.var and made all JuMP variables anonymous (breaking)
  • Added support for SDP, ACR, and ACT Power Flow formulations
  • Added cost model zero filtering to matpower parser
  • Eliminated usage of pm.model.ext, #149
  • Made solution default units per-unit (breaking)
  • Removed deprecated bus-less constraint_theta_ref function (breaking)
  • Renamed polar voltage variables v,t to vm,va (breaking)
  • Renamed functions with phase_angle to voltage_angle (breaking)
  • Renamed v_from and w_from variables to v_fr w_fr (breaking)
  • Removed variable and constraint function return values (breaking)
  • Made index_name an optional parameter in add_setpoint (breaking)
  • Moved check_cost_models into the objective building function
  • Fixed out of range bug in calc_theta_delta_bounds
  • Fixed bug in voltage angle differences in AbstractACPForms
  • Fixed bugs in AbstractDCPLLForm and added OPF test

v0.3.4

  • Added support for Matpower data with dclines (thanks to @frederikgeth, @hakanergun)
  • Added support for QC-OTS
  • Added support for multiple reference buses
  • Added rectangular voltage formulation of AC-OPF
  • Added w-theta formulation of AC-OPF
  • Added data units checks to update_data
  • Made branch flow parameter names consistent with Matpower
  • Fixed bug in constants for w-space voltage angle difference constraints
  • Fixed bug when no reference bus was specified
  • Fixed dcline parsing bug

v0.3.3

  • Added JuMP v0.17 compatibility
  • Reorganized documentation into Manual, Library, Developer, and Experimental Results

v0.3.2

  • Updated type declarations to Julia v0.6 syntax
  • Moved documentation to Documenter.jl (thanks to @yeesian)
  • Added basic OPF results to Documentation
  • Extended pm.ref include all fields from pm.data

v0.3.1

  • Added JuMP v0.16 and Julia v0.6 compatibility
  • Added missing function for AC-TNEP models
  • Added checks that tap ratios are non-zero
  • Made all power model forms abstract types, to support future extensions
  • Made matpower parser more robust to cases with line flow values
  • Fixed a bug that prevented parsing of bus_names when buses have non-contiguous ids
  • Fixed bounds correction units when angmin and angmax are 0.0

v0.3.0

  • Updated to JuMP v0.15 syntax
  • Replaced PowerModels set data types with "ref" dictionary
  • Refactored Matpower data processing to simplify editing network data after parsing
  • Unified network data and solution formats and made them valid JSON documents
  • Replaced JSON test files with Matpower test files
  • Added documentation on internal JSON data format to DATA.md
  • Updated TNEP models to work with Matpower parsing extensions
  • Strengthened convex formulations with Lifted Nonlinear Cuts (LNCs)
  • Added ability to easily inspect the JuMP model produced by PowerModels
  • Added constraint templates to provide an abstraction layer between the network data and network constraint definitions
  • Moved system wide voltage angle difference bounds to the "ref" dictionary
  • Refactored model definitions to be based on complex numbers

v0.2.3

  • Multiple improvements to Matlab file parsing
    • Added support Matlab cell arrays
    • Added support for Matpower bus_names
    • Added ability for reading non-standard Matpower data elements
  • Added JuMP version v0.14 upper bound

v0.2.2

  • Added Transmission Network Expansion Planning (tnep) problem.

v0.2.1

  • Added support for julia v0.5.0 and OS X
  • Added line flows option for solution output
  • Added initial documentation and helper functions
  • Replaced Gurobi with Pajarito for MISOCP tests

v0.2.0

  • Complete re-write to type-based implementation using dynamic dispatch
  • Incorporated abstract problem specifications
  • Added type-based formulation abstractions

v0.1.0

  • Initial function-based implementation