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Open Sustainable Technology

A curated list of open technology projects to sustain a stable climate, energy supply, biodiversity and natural resources.

Recent Releases of GenX

GenX - v0.4.4

GenX v0.4.4

Diff since v0.4.3

Merged pull requests:

  • Fix path manipulation bug #827 (#828) (@cfe316)

Closed issues:

  • [Bug]: model errors out when TimeDomainReduction and OutputFullTimeSeries are both activated (#827)

Energy Systems - Energy System Modeling Frameworks - Julia
Published by github-actions[bot] 3 months ago

GenX - v0.4.3

GenX v0.4.3

Patch Release

Changed

  • Changed the output filename for RSV from reg_dn.csv to reserves.csv (#814).
  • Created link in the thermal doc page to fuels page for piecewise linear cost curve documentation (#820).
  • Doc rendering fix in fuel.jl (#821).

Fixed

  • Fixed capacity reserve margin formulation for asymmetric storage when OperationalReserves is on. (#818)

Diff since v0.4.2

Merged pull requests:

  • Update write_rsv.jl with corrected filenames for RSV (#814) (@sambuddhac)
  • Fix #818 (#819) (@cfe316)
  • Update thermal.jl with links to fuels page for Piecewise linear cost (#820) (@sambuddhac)
  • Update fuel.jl (#821) (@sambuddhac)
  • Patch Release v0.4.3 (#822) (@lbonaldo)

Closed issues:

  • [Bug]: With OperationalReserves == 1, storage's CRM formulation is (partially) not used unless CapacityReserveMargin > 1 (#818)

Energy Systems - Energy System Modeling Frameworks - Julia
Published by github-actions[bot] 3 months ago

GenX - v0.4.2

GenX v0.4.2

Added

  • Fusion plant optional features for thermal plants (#743).
  • Support for reusing the same Gurobi environment for multiple solves when number of concurrent Gurobi uses is limited (#783).
  • Additional long-duration storage constraints to bound state of charge in non-representative periods (#781).
  • New version of add_similar_to_expression! to support arrays of Numbers. (#798)
  • New settings flag LDSAdditionalConstraints to provide flexibility in activating new long-duration storage constraints (#781). Can be set in the GenX settings file (PR #801).

Fixed

  • Add constraint to ensure that electricity charged from the grid cannot exceed the charging capacity of the storage component in VRE_STOR (#770).
  • Update getproperty function for vectors of resources to ensure compatibility with Julia v1.11 (#785).
  • Fixed cost calculation in write_costs.jl when no resources are present in a zone. (#796)
  • Added eTotalCMaxCapSlack to calculation of cUnmetPolicyPenalty in write_costs.jl (#806).

Changed

  • The charge.csv and storage.csv files now include only resources with charge and storage variables (#760 and #763).
  • Deduplicated docs on optimized scheduled maintenance for thermal resources (#745).
  • Removed the CapRes_* columns from Network.csv since they were not being used (#784).

Diff since v0.4.1

Merged pull requests:

  • Fusion plant features for THERM (#743) (@cfe316)
  • Fix pr 760 (#763) (@lbonaldo)
  • Fix 745 one scheduled maintenance doc (#765) (@cfe316)
  • Charge constr vrestor (#770) (@qluo0320github)
  • Additional constraints to prevent violation of state of charge limits in non-representative periods (#781) (@federicoparolin)
  • support reuse of Gurobi environment for multistage models (#783) (@NLaws)
  • Fix getproperty for Vector{Resources} to align with new array interface (#785) (@lbonaldo)
  • 771 bugerror writing cost when we have resources that are not new build and not eligible for retirement (#796) (@lbonaldo)
  • 784 bug capres flag for transmission lines does not appear to do anything (#797) (@lbonaldo)
  • Add add_similar_to_expression! for arrays (#798) (@lbonaldo)
  • Settings flag for new LDS constraints activation (#801) (@lbonaldo)
  • Release v0.4.2 (#805) (@lbonaldo)
  • Add eTotalCMaxCapSlack to cUnmetPolicyPenalty in write_costs.jl (#806) (@lbonaldo)

Closed issues:

  • [Bug]: Clean up genx.jl exports (#739)
  • [Request]: Move, reorganize Scheduled maintenance docs (#745)
  • [Bug]: Example systems with electrolyzers not properly configured (#759)
  • [Documentation]: Typos in Model_notation.md (#761)
  • [Bug]: type Thermal has no attribute cum_min_retired_cap_mw (#766)
  • [Bug]: Tutorials Power.csv Plot (#782)
  • [Bug]: CapRes flag for transmission lines does not appear to do anything (#784)
  • [Bug]: eTotalCGrid expression calculated but not added to objective function (#803)

Energy Systems - Energy System Modeling Frameworks - Julia
Published by github-actions[bot] 4 months ago

GenX - v0.4.1

GenX v0.4.1

Added

  • Objective scaler to address ill-conditioning problem (#667)
  • Co-location of electrolyzers to VRE_STOR and enabled regional hydrogen production limits (#678)
  • Option to output results with time series reconstructed for the entire year (#700)
  • Default settings in multitage optimization (#703)
  • Option to write results after each iteration of a multistage run (Myopic) (#704)
  • Workflow that ensures that CHANGELOG.md and the version number are updated (#711)
  • Print GenX version at startup and export it to disk (#712)
  • Option to precompile run_genx_case! and cluster_inputs to speedup TTFX of GenX (#718)

Fixed

  • Formatting and images in tutorials 3, 5, 6, and 8 to address issue #697 (#698)
  • devbranch in the docs make.jl file to track the develop branch (#710)
  • TDR to load Fuels_data.csv w/wo optional None column (#720)
  • Include comprehensive list of all settings flags (that are currently in GenX) in the docs (#721)
  • Allow load_vre_stor_variability! to load only wind or solar resources as
    part of the VRE_STOR module (#728)
  • Text to doc pages for retrofits (#730)
  • Typo in HydrogenMinimumProduction setting key (#746)
  • Default value of Cap_Size attribute for thermal generators (#747)

Changed

  • Generalized the cHourlyMatching constraint in electrolyzer.jl and implemented it similarly
    to the other policies, making it easier for developers to add further contributions
    to the constraint (#725).

New Contributors

Full Changelog: https://github.com/GenXProject/GenX.jl/compare/v0.4.0...v0.4.1

Diff since v0.4.0

Merged pull requests:

  • Add electrolyzer to current VRE_STOR (#678) (@qluo0320github)
  • Typo fixes (#696) (@derekwacks)
  • Tutorial fixes (#698) (@mmutic)
  • Full time series reconstruction (#700) (@mmutic)
  • Configure multistage settings (#703) (@mmutic)
  • 658 save resource buildout every few optimizer iterations and allow optimizer warm start (#704) (@mmutic)
  • Allow dev docs to track develop branch (#710) (@lbonaldo)
  • Add workflow to check PR, update existing workflows (#711) (@lbonaldo)
  • Print version at startup and export it to disk (#712) (@lbonaldo)
  • Add option to precompile run_genx_case! function (#718) (@lbonaldo)
  • Make None colum in Fuels_data optional (#720) (@lbonaldo)
  • Add all settings params to docs (#721) (@lbonaldo)
  • Add hourly matching constraint (#725) (@lbonaldo)
  • Allow load_vre_stor_variability! to load only wind or solar variabilities (#728) (@lbonaldo)
  • Update retrofits.jl documentation with additional text (#730) (@sambuddhac)
  • Fix typo in HydrogenMinimumProduction (#746) (@lbonaldo)
  • Fix default value of cap size api (#747) (@lbonaldo)
  • Release v0.4.1 (#752) (@lbonaldo)
  • Update develop branch with release branch (#753) (@lbonaldo)

Closed issues:

  • Energy Share Requirement Documentation Update (#468)
  • Adding precompile tools (#519)
  • Feature Request: Hourly outputs for price, emissions, power, storage dispatch (#538)
  • TDR requires None column in Fuels_data (#552)
  • Provide computationally efficient approach to incorporate multi-level investment/O&M cost supply curve (#647)
  • no netRevenue.csv in the results (#653)
  • Save resource buildout every few optimizer iterations and allow optimizer warm start (#658)
  • [Feature]: Write DDP upper & lower bound each iteration when solving multi-stage with foresight (#686)
  • [Bug]: wrong contraint expression in reserves_contingency!(EP::Model, inputs::Dict, setup::Dict) doc (#689)
  • TagBot trigger issue (#695)
  • GenX Documentation [Bug]: (#697)
  • [Bug]: Model Settings Parameters Documentation (#701)
  • [Feature]: Add GenX version number to output files (#708)
  • [Bug]: Minor typos in example_systems/README.mds (#715)
  • [Bug]: VRE_STOR asks for both wind and solar variability data when there is only solar or wind components in VRE_STOR. (#727)
  • [Bug]: Examples 2 and 6 have Hydro_Energy_to_Power_Ratio in Thermal.csv (#737)
  • [Bug]: Typos: HydrogenMimimumProduction (#740)
  • [Feature]: remove vZERO cruft (#741)
  • [Feature]: Inclusion of NSE (Non-Served Energy) Data in Example Cases (#744)

Energy Systems - Energy System Modeling Frameworks - Julia
Published by github-actions[bot] 8 months ago

GenX - GenX.jl v0.4.0

Note: user guide "Porting a module from GenX v0.3.6 to GenX v0.4.0" available at this link.

What's Changed

This present version of GenX.jl through this new release introduces a few new modules and technologies. It also introduces a new version of the folder structure for case studies and a reformatted version of the input files for demand, reserves and resources. The documentation pages have also been updated to reflect these new changes as well as we have a much more logically consistent and user-friendly structure of organization of the documentation pages. We hope, this will cater better and more effectively, all kinds of users, whether developers/contributors, or energy modelers.

Added

  • Feature CO2 and fuel module (#536)
    Adds a fuel module which enables modeling of fuel usage via (1) a constant heat rate and (2)
    piecewise-linear approximation of heat rate curves.
    Adds a CO2 module that determines the CO2 emissions based on fuel consumption, CO2 capture
    fraction, and whether the feedstock is biomass.
  • Enable thermal power plants to burn multiple fuels (#586)
  • Feature electrolysis basic (#525)
    Adds hydrogen electrolyzer model which enables the addition of hydrogen electrolyzer
    demands along with optional clean supply constraints.
  • Add ability of storage to contribute to capacity reserves (#475)
  • Add Co-located VRE+Storage Module (#523)
  • Add output for dual of capacity constraint (#473)
  • Add PR template (#516)
  • Validation ensures that resource flags (THERM, HYDRO, LDS etc) are self-consistent (#513).
  • Maintenance formulation for thermal-commit plants (#556).
  • Add new tests for GenX: three-zone, multi-stage, electrolyzer, VRE+storage,
    piecewise_fuel+CO2, and TDR (#563 and #578).
  • Added a DC OPF method (#543) to calculate power flows across all lines
  • Added write_operating_reserve_price_revenue.jl to compute annual operating reserve and regulation revenue.
    and added the operating reserve and regulation revenue to net revenue (#611)
  • Add functions to compute conflicting constraints when model is infeasible if supported by the solver (#624).
  • New settings parameter, VirtualChargeDischargeCost to test script and VREStor example case. The PR 608 attempts to
    introduce this parameter as cost of virtual charging and discharging to avoid unusual results (#608).
  • New settings parameter, StorageVirtualDischarge, to turn storage virtual charging and discharging off if desired by the user (#638).
  • Add module to retrofit existing resources with new technologies (#600).
  • Formatted the code and added a format check to the CI pipeline (#673).
  • Add check when capital recovery period is zero and investment costs are non-zero in multi-stage GenX (#666)
  • Added condition number scaling added to objective function (#667)
  • Added versioned doc-pages for v0.3.6 and v0.4.0
  • Added a warning message in write_costs_multistage mentioning the approximate value of costs currently. (#680)

Fixed

  • Reserves have been renamed as OperationReserves in order to distinguish it from Capacity Reserve Margin (#641)
  • Generators_data.csv is not split into multiple different input files grouped together according to different resources (#612)
  • Assign correct investment cost per stage in objective function initialization for multi-stage runs (#530)
  • Fix name of Fixed_OM_Cost_Charge_per_MWyr when reading from Generators_data in multistage code. (#533)
    Previously there was a typo in this in the multistage code that led to a silent bug, which affects outputs,
    for anyone running non-myopic multistage GenX with asymmetric storage.
  • Fix computation of cumulative minimum capacity retirements in multistage GenX (#514)
  • Fix access of eELOSSByZone expr before initialization (#541)
  • Correctly write unmet reserves (in reg_dn.csv) (#575)
  • Correctly scale total reserves column (in reg_dn.csv) (#594)
  • Add validation for Reg_Max and Rsv_Max columns in Generators_data.csv when MUST_RUN is set to 1 (#576)
  • Fix scaling of transmission losses in write_transmission_losses.jl (#621)
  • Fix cost assignment to virtual storage charge/discharge - issue #604 (#608)
  • Fix modeling of hydro reservoir with long duration storage (#572).
  • Fix update of starting transmission capacity in multistage GenX
  • Fix write_status with UCommit = WriteShadowPrices = 1 (#645)
  • Fixed outputting capital recovery cost to 0 if the remaining number of years is 0 (#666)
  • Updated the docstring for the initialize_cost_to_go function and adjusted the formula for the discount factor to reflect the code
    implementation (#672).
  • Fix write_multi_stage_cost.jl: add discount with OPEX multipliers to cUnmetPolicyPenalty (#679)
  • Fix DF calculation in DDP to make it more generic for variable length stages (#680)
  • Fix write_power_balance.jl: add additional two columns ("VRE_Storage_Discharge" and "VRE_Storage_Charge") for VRE_STOR

Changed

  • Use add_to_expression! instead of the += and -= operators for memory performance improvements (#498).
  • Generally, 'demand' is now used where (electrical) 'load' was used previously (#397).
  • Load_data.csv is being renamed to Demand_data.csv. (#397)
  • Load_MW_z* columns in that file are renamed to Demand_MW_z*. (#397)
  • In Reserves.csv, Reg_Req_Percent_Load and Rsv_Req_Percent_Load are renamed to ..._Demand. (#397)
  • Load and LoadWeight keys in the time_domain_reduction_settings.yml file are renamed to Demand, DemandWeight. (#397)
  • The New_Build column in Generators_data.csv has been separated into two: New_Build and Can_Retire (#392).
    Values in each column are {0,1}.
  • Separate proprietary JuMP solvers from the GenX package.
    This allows users of Gurobi or CPLEX to use them without modifying
    the source code of the GenX package directly. This is a key step in publishing
    GenX as a proper Julia package. This does require change to the Run.jl files,
    to specify the solver. (#531)
  • In the examples, change Reg_Max and Rsv_Max of any MUST_RUN generators to 0.
    This mitigates but does not fully fix (#576).
  • Expressions of virtual charging and discharging costs in storage_all.jl and vre_stor.jl
  • The input file Generators_data.csv has been split into different files, one for each type of generator.
    The new files are: Thermal.csv, Hydro.csv, Vre.csv, Storage.csv, Flex_demand.csv, Must_run.csv,
    Electrolyzer.csv, and Vre_stor.csv. The examples have been updated, and new tests have been added to
    check the new data format (#612).
  • The settings parameter Reserves has been renamed to OperationalReserves, Reserves.csv to
    Operational_reserves.csv, and the .jl files contain the word reserves have been renamed to
    operational_reserves (#641).
  • New folder structure for a GenX case. The input files are now organized in the following folders: settings,
    policies, resources and system. The examples and tests have been updated to reflect this change.
  • New folder structure implemented for example_system. This folder now consists of nine separate folders each pertaining to a different
    case study example, ranging from the ISONE three zones, with singlestage, multistage, electrolyzers, all the way to the 9 bus IEEE
    case for running DC-OPF.
  • Pruned HiGHS solver settings to the necessary minimum (#668)
  • Changed deploydoc URL to GenX.jl (#662)

Deprecated

  • The above load keys, which generally refer to electrical demand, are being deprecated.
    Users should update their case files.
    For now this is done in a backward-compatible manner, and @info reminders are written to the log to prompt the user to update.
    "Load" now typically refers only to the transferrence of data from files to memory,
    except for a few places such as the common term "value of lost load" which refers to non-served demand (#397).
  • New_Build = -1 in Generators_data.csv: instead, use New_Build = 0 and Can_Retire = 0.
  • The matrix-style input of the grid for Network.csv is deprecated in favor a column-style input.
    Instead of columns z1, z2, ... with entries -1, 0, 1, use two columns: Start_Zone, End_Zone (#591).

Full Changelog: https://github.com/GenXProject/GenX.jl/compare/v0.3.6...v0.4.0-rc

Full List of Changes from GenX v0.3.6 to prerelease v0.4.0-rc

New Contributors

Full Changelog: https://github.com/GenXProject/GenX.jl/compare/v0.3.7...v0.4.0

Full List of Changes from GenX v0.3.7 to v0.4.0

New Contributors

Full Changelog: https://github.com/GenXProject/GenX.jl/compare/v0.3.7...v0.4.0

Energy Systems - Energy System Modeling Frameworks - Julia
Published by sambuddhac 12 months ago

GenX - GenX Patch Version v0.3.7

What's Changed

Fixed

  • write_costs: add check on COMMIT_ZONE set (#507)
  • Access to eELOSSByZone expr before initialization (#569)
  • Scaling of transmission losses in tlosses.csv (#622)
  • Correct tracking of current investment stage by SDDP (#628)
  • Computation of cumulative minimum capacity retirements in multistage GenX (#631)
  • Modeling of hydro reservoir with long duration storage (#632)
  • Update of starting transmission capacity in multistage GenX (#633)

Full Changelog: https://github.com/GenXProject/GenX.jl/compare/v0.3.6...v0.3.7

Energy Systems - Energy System Modeling Frameworks - Julia
Published by lbonaldo about 1 year ago

GenX - GenX v0.4.0-rc

What's Changed

Added

  • Feature CO2 and fuel module (#536)
    Adds a fuel module which enables modeling of fuel usage via (1) a constant heat rate and (2)
    piecewise-linear approximation of heat rate curves.
    Adds a CO2 module that determines the CO2 emissions based on fuel consumption, CO2 capture
    fraction, and whether the feedstock is biomass.
  • Enable thermal power plants to burn multiple fuels (#586)
  • Feature electrolysis basic (#525)
    Adds hydrogen electrolyzer model which enables the addition of hydrogen electrolyzer
    demands along with optional clean supply constraints.
  • Add ability of storage to contribute to capacity reserves (#475)
  • Add Co-located VRE+Storage Module (#523)
  • Add output for dual of capacity constraint (#473)
  • Add PR template (#516)
  • Validation ensures that resource flags (THERM, HYDRO, LDS etc) are self-consistent (#513).
  • Maintenance formulation for thermal-commit plants (#556).
  • Add new tests for GenX: three-zone, multi-stage, electrolyzer, VRE+storage,
    piecewise_fuel+CO2, and TDR (#563 and #578).
  • Added a DC OPF method (#543) to calculate power flows across all lines
  • Added write_operating_reserve_price_revenue.jl to compute annual operating reserve and regulation revenue.
    Added the operating reserve and regulation revenue to net revenue (PR # 611)
  • Add functions to compute conflicting constraints when model is infeasible if supported by the solver (#624).
  • New settings parameter, VirtualChargeDischargeCost to test script and VREStor example case. The PR 608 attempts to
    introduce this parameter as cost of virtual charging and discharging to avoid unusual results (#608).
  • New settings parameter, StorageVirtualDischarge, to turn storage virtual charging and discharging off if desired by the user (#638).
  • Add module to retrofit existing resources with new technologies (#600).

Fixed

  • Set MUST_RUN=1 for RealSystemExample/small_hydro plants (#517).
    Previously these plants had no resource flag set, and so they did not contribute to the power balance.
    As these plants are now useful, the objective in these cases is slightly lower.
  • Assign correct investment cost per stage in objective function initialization for multi-stage runs (#530)
  • Fix name of Fixed_OM_Cost_Charge_per_MWyr when reading from Generators_data in multistage code. (#533)
    Previously there was a typo in this in the multistage code that led to a silent bug, which affects outputs,
    for anyone running non-myopic multistage GenX with asymmetric storage.
  • Fix computation of cumulative minimum capacity retirements in multistage GenX (#514)
  • Fix access of eELOSSByZone expr before initialization (#541)
  • Correctly write unmet reserves (in reg_dn.csv) (#575)
  • Correctly scale total reserves column (in reg_dn.csv) (#594)
  • Add validation for Reg_Max and Rsv_Max columns in Generators_data.csv when MUST_RUN is set to 1 (#576)
  • Fix scaling of transmission losses in write_transmission_losses.jl (#621)
  • Fix cost assignment to virtual storage charge/discharge - issue #604 (#608)
  • Fix modeling of hydro reservoir with long duration storage (#572).
  • Fix update of starting transmission capacity in multistage GenX
  • Fix write_status with UCommit = WriteShadowPrices = 1 (#645)

Changed

  • Use add_to_expression! instead of the += and -= operators for memory performance improvements (#498).
  • Generally, 'demand' is now used where (electrical) 'load' was used previously (#397).
  • Load_data.csv is being renamed to Demand_data.csv.
  • Load_MW_z* columns in that file are renamed to Demand_MW_z*.
  • In Reserves.csv, Reg_Req_Percent_Load and Rsv_Req_Percent_Load are renamed to ..._Demand.
  • Load and LoadWeight keys in the time_domain_reduction_settings.yml file are renamed to Demand, DemandWeight.
  • The New_Build column in Generators_data.csv has been separated into two: New_Build and Can_Retire (#392).
    Values in each column are {0,1}.
  • Separate proprietary JuMP solvers from the GenX package.
    This allows users of Gurobi or CPLEX to use them without modifying
    the source code of the GenX package directly. This is a key step in publishing
    GenX as a proper Julia package. This does require change to the Run.jl files,
    to specify the solver. (#531)
  • In the examples, change Reg_Max and Rsv_Max of any MUST_RUN generators to 0.
    This mitigates but does not fully fix (#576).
  • Expressions of virtual charging and discharging costs in storage_all.jl and vre_stor.jl
  • The input file Generators_data.csv has been split into different files, one for each type of generator.
    The new files are: Thermal.csv, Hydro.csv, Vre.csv, Storage.csv, Flex_demand.csv, Must_run.csv,
    Electrolyzer.csv, and Vre_stor.csv. The examples have been updated, and new tests have been added to
    check the new data format (#612).
  • The settings parameter Reserves has been renamed to OperationalReserves, Reserves.csv to
    Operational_reserves.csv, and the .jl files contain the word reserves have been renamed to
    operational_reserves (#641).
  • New folder structure for a GenX case. The input files are now organized in the following folders: settings,
    policies, resources and system. The examples and tests have been updated to reflect this change.

Deprecated

  • The above load keys, which generally refer to electrical demand, are being deprecated.
    Users should update their case files.
    For now this is done in a backward-compatible manner, and @info reminders are written to the log to prompt the user to update.
    "Load" now typically refers only to the transferrence of data from files to memory,
    except for a few places such as the common term "value of lost load" which refers to non-served demand (#397).
  • New_Build = -1 in Generators_data.csv: instead, use New_Build = 0 and Can_Retire = 0.
  • The matrix-style input of the grid for Network.csv is deprecated in favor a column-style input.
    Instead of columns z1, z2, ... with entries -1, 0, 1, use two columns: Start_Zone, End_Zone (#591).

Full Changelog: https://github.com/GenXProject/GenX.jl/compare/v0.3.6...v0.4.0-rc

Energy Systems - Energy System Modeling Frameworks - Julia
Published by sambuddhac about 1 year ago

GenX - GenX Patch Version v0.3.6

What's Changed

Fixed

  • Order of slack policy constraint declarations (#464)
  • Sign error in the Maximum Capacity Requirement slack constraint term (#461)
  • Remove outdated HiGHS setting simplex_dualise_strategy (#489)
  • Fix bug in LDES outputs (#472)
  • Updated README with new instructions for running GenX through Julia REPL terminal (#492)
  • Fix factor of 0.5 when writing out transmission losses. (#480)
  • Fix summation error when a set of hours is empty (in thermal_commit.jl).

Changed

  • Eliminate 'Axis contains one element' warning (seen when LDS is used) by combining two constraints. (#496)

Full Changelog: https://github.com/GenXProject/GenX/compare/v0.3.5...v0.3.6

Energy Systems - Energy System Modeling Frameworks - Julia
Published by sambuddhac over 1 year ago

GenX - GenX Patch Version v0.3.5

Release Notes for GenX v0.3.5 (Released on: 18th May, 2023)

Added

  • Added ability to apply run_timedomainreduction to multistage problems (#443).
  • Added a description of how to use time domain reduction (#426).
  • Validation: against trying to perform time domain reduction (clustering)
    on data which has already been clustered.
  • This changelog (#424).

Fixed

  • run_timedomainreduction did not support multi-stage problems (#441).
  • Not having a changelog (#423).

Changed

  • The columns Rep_Periods, Timesteps_per_Rep_Period, and Sub_Weights are now required in Load_data.csv
    for all cases (#426).

Removed

  • The settings key OperationsWrapping. Its functionality has now been folded into the
    TimeDomainReduction setting. Using the key now will print a gentle warning (#426).

Full Changelog: https://github.com/GenXProject/GenX/compare/v0.3.4...v0.3.5

Energy Systems - Energy System Modeling Frameworks - Julia
Published by sambuddhac almost 2 years ago

GenX - GenX Patch Version v0.3.4

[0.3.4] - 2023-04-28

Added

  • Validation of the time basis in load_data.csv (#413).
  • Arbitrary option keys can be passed to Solvers (#356).
  • Validation for OperationWrapping and TimeDomainReduction settings (#337).
  • Ability to use 'slack variables' to violate policy constraints---at a cost (#328).
  • Documented minimum up & down-time constraints (#324).
  • Validation preventing two columns of input data with the same name (#309).
  • Fuel type None is no longer need to be listed as a column in fuels_data.csv, e.g. for solar panels (#303).
  • Non-varying generators (e.g. thermal generators) no longer need to be listed in generators_variability.csv (#303).
  • Ability to load the transmission network representation from lists rather than a matrix (#292).
  • Maximum Capacity Requirement policy constraint.
  • New run_genx_case! function for use in scripts.
  • New run_timedomainreduction! function for pre-clustering a case.
  • Improved documentation.

Fixed

  • Corrected the interaction of Reserves and Regulation policies with ramp rates (#415).
  • Removed the useless MinCapTag column from examples (#380).
  • Removed invalid BarObjRng key from gurobi settings (#374).
  • Default crossover or run_crossover settings (#363).
  • HYDRO resources now allow the period map to be loaded (#362).
  • Numbering in documentation (#330).
  • Correct scaling of emission outputs (#322).
  • Add transmission losses to ESR constraints (#320).
  • Author's name spelling in docs (#317).
  • Unset executable bits on files (#297).
  • Morris method example now runs.
  • Various other settings issues with example cases.

Changed

  • Simplified the Simple_Test_Case example (#414).
  • SmallNewEngland/Onezone example now uses linearized unit committment by default (#404).
  • Removed the unused dependency BenchmarkTools (#381).

Removed

  • The unmaintained MonteCarlo code (#357).
  • License blocks from most file headers (#353).
  • Extra LDS columns from several examples (#312).
  • SCIP from the Project and from documentation.

What's Changed

Full Changelog: https://github.com/GenXProject/GenX/compare/v0.3.3...v0.3.4

Energy Systems - Energy System Modeling Frameworks - Julia
Published by sambuddhac about 2 years ago

GenX - v0.3.3

What's Changed

Full Changelog: https://github.com/GenXProject/GenX/compare/v0.3.2...v0.3.3

Energy Systems - Energy System Modeling Frameworks - Julia
Published by GenXProject over 2 years ago

GenX - GenX patch version v0.3.2

What's Changed

Full Changelog: https://github.com/GenXProject/GenX/compare/v0.3.1...v0.3.2

Energy Systems - Energy System Modeling Frameworks - Julia
Published by sambuddhac over 2 years ago

GenX - v0.3.1

What's Changed

The major updates to the v0.3.1 patch release are the following:

  1. Addition of HiGHS as the default solver (HiGHS is open-source, free/non-commercial, and a fast solver as long as LP problems are being solved)
  2. Significant changes to the way in which GenX is run (We decided to stick to what we have been calling Mathod 1 till date and decided to get rid of Method 2. Please read the README carefully to run GenX)
  3. Revised and refined DDP model
  4. Gotten rid of unused package dependencies to expedite the loading and running of GenX.

The details of the patch release as as follows:

Full Changelog: https://github.com/GenXProject/GenX/compare/v0.3.0...v0.3.1

Energy Systems - Energy System Modeling Frameworks - Julia
Published by sambuddhac over 2 years ago

GenX - GenX version v0.3.0

GenX version 0.3.0 Release Notes

In this version, we have upgraded GenX to version v0.3.0. To run GenX 0.3.0, we recommend Julia language version 1.6.x series along with JuMP 0.21.x series (all the environment dependencies have been updated to the most recent compatible versions as well). The following are the salient features that have been added in this version release:

  • Added Dual Dynamic Programming (DDP) Multi-stage capacity expansion feature to GenX: This is the major highlight and most important new feature added to GenX in version 0.3.0. Addition of the DDP now allows GenX to carry out multi stage and multi year look-ahead capacity expansion planning into the future in a most rigorous mathematical framework.
  • Vectorization of output writing to enhance the speed of generating results files.
  • Revised and updated "Method of Morris" for sophisticated sensitivity analyses studies (along with previously created "Modeling to Generate Alternatives (MGS)" analysis).
  • Bug-fixes and refinement of modularization of the different policy modules like co2_cap, cap_reserve_margin, minimum_capacity_requirement etc., for ease and convenience for adding new technologies by the users.

Below are the details of the changes in this release:

What's Changed

New Contributors

Full Changelog: https://github.com/GenXProject/GenX/compare/v0.2.0...v0.3.0

Energy Systems - Energy System Modeling Frameworks - Julia
Published by sambuddhac about 3 years ago

GenX - GenX version v0.2.0

In this version, we have once again upgraded GenX to version v0.2.0. This version (like v0.1.0) also runs with Julia language versions 1.5.x and 1.6.x series along with JuMP 0.21.x series (all the environment dependencies have been updated to the most recent compatible versions as well). The following are the salient features that have been added in this version release:

  • Added "Method of Morris" for sophisticated sensitivity analyses studies (along with previously created "Modeling to Generate Alternatives (MGS)" analysis).
  • Added SCIP as an open source solver option, which has a much superior performance, on, especially mixed integer programming problem instances.
  • Modularized the different policy modules like co2_cap, cap_reserve_margin, minimum_capacity_requirement etc., for ease and convenience for adding new technologies by the users.

Just like before, we have also fixed many of the bugs that were present in the earlier release. Version v0.1.0 is still there in the old version branch. The older release before v0.1.0 is still on GitHub on the branch old_version (the older release runs with Julia 1.3.x and 1.4.x series and with older versions of environment dependencies).

Energy Systems - Energy System Modeling Frameworks - Julia
Published by GenXProject over 3 years ago

GenX - GenX version v0.1.0

In this version, we have upgraded GenX, so that it can be run with the two most recent Julia language versions, namely 1.5.x and 1.6.x series along with JuMP 0.21.x series (all the environment dependencies have been updated to the most recent compatible versions as well). We have also fixed many of the bugs that were present in the earlier release. The older release is still on GitHub on the branch old_version (the older release runs with Julia 1.3.x and 1.4.x series and with older versions of environment dependencies).

Energy Systems - Energy System Modeling Frameworks - Julia
Published by sambuddhac over 3 years ago