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Change history for MOST

since 1.3.1

2/16/26

  • Allow absolute paths for file inputs to loadgenericdata() and the functions that call it, e.g. addstorage(), addwind(), getprofiles(), loadmd(), loadstoragedata(), loadxgendata().

Version 1.3.1 - Jul 12, 2025

7/12/25

  • Release 1.3.1.
  • Move examples from lib/t to their own examples directory.

5/23/25

  • Include HiGHS solver (via HiGHSMEX interface), if available, in unit commitment tests.

3/19/25

  • Fix issue caused by tiny non-zero values for commitment variables. Don't count on MP-Opt-Model's miqps_<solver>() functions to round integer variable solutions.

10/7/24

  • Tweak tests (again) to avoid warnings and presolve bug with HiGHS-based linprog and intlinprog in Optimization Toolbox R2024b.

9/12/24

  • Fix issue with most_summary() when ramp results are missing.

5/29/24

  • Fix issue #45 where most() does not properly handle cases with contingencies defined only in some periods/scenarios. Thanks to Stefano Nicolin.
  • Update most_summary() to skip display of non-existent contingencies.

Version 1.3 - May 10, 2024

5/10/24

  • Release 1.3.

4/4/24

  • Tweak tests to avoid warnings and presolve bug with new HiGHS-based linprog and intlinprog in Optimization Toolbox R2024a.

3/21/24

  • Add Sphinx-based Reference documentation.

11/8/23

  • Speed up building unit commitment (min up/down time) constraints. Improvement can be quite substantial on large problems.

11/6/23

  • Reduce memory requirements for long horizon cases with storage by forming/storing transposes of matrices for storage constraints. Requires MP-Opt-Model version > 4.1.

10/25/23

  • Fix issue #39 in which the value of mdi.Delta_T, the number of hours represented by each period, was not being accounted for in most of the terms in the objective function. Thanks to Stefano Nicolin.

10/4/23

  • Fix issue #37 which caused a fatal error in storage input checks with multiple storage units under some circumstances. Thanks to Keir Steegstra.

2/3/23

  • Remove extra column in mdo.results.ExpectedRampCost and ignore for single period.

Version 1.2 - Dec 13, 2022

12/13/22

  • Release 1.2.

11/10/22

  • Update addgen2mpc() to expand fixed reserve parameters to keep sizes compatible.

9/29/22

  • Silence near singular matrix warnings in some tests that began with MATLAB R2022b.

8/30/22

  • Fix issue #29, where a typo caused a check on md.UC.MinDown >= 1 to be skipped. Thanks to Talha Iqbal.

6/15/22

  • Add TLMP (temporal locational marginal price) for storage units based on work by Chen, Tong in [Chen2022] and returned in mdo.results.StorageTLMPc, mdo.results.StorageTLMPd, mdo.results.CondStorageTLMPc, mdo.results.CondStorageTLMPd. See Table 5-13 in the User's Manual.
  • Add tests for TLMP in t_most_tlmp based on toy examples from Cong Chen, including both ramping and storage.

6/14/22

  • For deterministic cases with storage where ForceCyclicStorage is 0, ensure that initial storage bounds are equal to initial storage and output a warning if they are modified. Fix deterministic UC tests where this was causing results to change depending on value of rho.

5/12/22

  • Add calculation of expected TLMP (temporal locational marginal price) based on work by Guo, Chen, Tong in [Guo2021] and [Chen2021] and returned in mdo.results.GenTLMP and mdo.results.CondGenTLMP. See Table 5-13 in the User's Manual.

5/4/22

  • Ramping reserves and constraints are now included for the transition from the initial state into period 1, except for single-period problems.
  • INCOMPATIBLE CHANGE: Modified definition of ramping reserves for period t (and all corresponding input and output parameters) to refer to the transition from t-1 to t, not t to t+1. This means that the ramping reserves for the transition into the first period are now optimization variables and the corresponding constraints are explicit. This is for multiperiod problems only. Ramping reserves and contraints are explicitly excluded for single-period problems.
    Note: This change also corrects an error in (4.11) in the manual. The superscript t on gamma is now correct. Previously it should have been t+1, as it was in the code.

4/22/22

  • Fix tests that were failing under Octave 7.x.

5/24/21

  • Fix bug in plot_uc() that prevented it from working properly in a subplot, such as in t_most_uc(). Thanks to Lim Han.

Version 1.1 - Oct 8, 2020

Requires MATPOWER with 7.1 or later (for MP-Opt-Model 3.0 or later).

10/8/20

  • Release 1.1.

9/9/20

  • Use opt_model.get_soln() to extract variable and shadow price results, rather than doing the indexing manually.

3/19/20

  • Convert to using opt_model.solve() method rather than calling miqps_matpower() or qps_matpower() directly.
  • INCOMPATIBLE CHANGE: Update objective function value returned in mdo.QP.f to include the previously missing constant term.

2/27/20

  • Fix issue #16, where the om field of the output MOST data struct (mdo) was a handle to the same object as as the om field of the input MOST data struct (mdi), meaning that changing one would modify the other. Thanks to Baraa Mohandes.

8/27/19

  • Update most_summary to include sections for fixed loads and storage expected stored energy. Thanks to Baraa Mohandes.
  • Move assembly of constraints and variable bounds inside the build_model conditional. Thanks to Baraa Mohandes.

8/21/19

  • Fix bug #6 where building a model without solving it, or solving a previously built model resulted in a fatal error. Thanks to Baraa Mohandes.

8/20/19

  • Fix bug #11 where storage constraints were not correct for t=1 and rho ~= 1. Thanks to Baraa Mohandes.

Version 1.0.2 - Jun 20, 2019

6/20/19

  • Release 1.0.2.
  • Add CITATION file.
  • Other miscellaneous documentation updates, e.g. MATPOWER website links updated to https://matpower.org, separate references for MATPOWER software and User's Manual, with DOIs.

11/20/18

  • Fix selection of default solver for t_most_w_ds and add option to specify solver directly in optional input arg.

Version 1.0.1 - Oct 30, 2018

10/30/18

  • Release 1.0.1.

10/26/18

  • INCOMPATIBLE CHANGE: Failure of the optimization no longer halts execution and jumps to the debugger.
  • Add success flag to md.results output MOST Data struct to indicate success or failure of optimization.

3/19/18

  • Fix bugs in plot_uc_data() resulting in incorrect legends.

3/7/18

  • Replace clock()/etime() with tic()/toc() for timing.

9/27/17

  • Fix bug #1 in loadmd() where profiles that modify xGenData or StorageData resulted in a fatal error.

9/12/17

  • Update for opt_model API cleanup.

9/1/17

  • Use MATPOWER's new quadratic costs in opt_model in place of the legacy cost model.

8/7/17

  • Switch to OOP notation everywhere for opt_model object, e.g. om.method().
  • Use om.init_indexed_name() instead of deprecated form of calls to add_vars(), add_constraints() or add_costs().
  • Use om.add_lin_constraint() in place of deprecated add_constraints().

5/25/17

  • Fix dimension of RampWear cost indexing if mdi.OpenEnded is true.
  • Add missing constant term to objective function value reported by most_summary.

1/26/17

  • Add MOST User's Manual to docs and sources to docs/src.

12/21/16

  • Add Travis-CI integration. Thanks to Richard Lincoln.

Version 1.0 - Dec 16, 2016

12/16/16

11/17/16

  • Silence some warnings during tests on Octave 4.2.

Version 1.0b2 - Nov 1, 2016

11/1/16

  • Released 1.0b2.

10/27/16

  • Fixed some MOSEK related issues in tests and tutorial examples.

Version 1.0 - Jun 1, 2016

6/1/16

  • Released 1.0b1.

3/1/16

  • Put checks in loadmd() and most() to require internal bus ordering for mpc, plus explicit notes in documentation.

2/26/16

  • Rename example files in most/t to start with ex_ instead of eg_.

2/25/16

  • Add MATPOWER option most.fixed_res with default of -1 (depends on presence of md.FixedReserves) to control md.IncludeFixedReserves.
  • Move fixed zonal reserve output fields (R, prc, mu.l, m.u, m.Pmax, totalcost) from mdo.FixedReserves(t,j,k) to mdo.flow(t,j,k).mpc.reserves.

2/24/16

  • Add most_summary() function to summarize and print some summary results. Moved from some of the test files into its own public function. (Still very incomplete).
  • For consistency, rename MOST data struct variables everywhere to mdi (input) from Istr, md_in, and mdin, and to mdo (output) from Ostr, md_out, and mdout.
  • Rename md.idx fields for dimensions of dynamic system constraints.
    • nyo --> nyds
    • nzd --> nzds
    • nyt --> ntds

2/22/16

  • (Tentatively) modify md_init() to initialize only what is needed to run loadmd() and most().

1/26/16

  • Renamed mops to most, and re-wrote history below accordingly.

12/18/15

  • Fixed fatal crash triggered by failed solve with verbose option off.

12/9/15

  • Added ExpectedTerminalStorageMax, ExpectedTerminalStorageMin to md.Storage and StorageData structs. If present ExpectedTerminalStorageAim now simply overwrites both.

10/27/15

  • Renamed apply_contingency() to apply_changes() and moved from sopf to matpower.

7/17/15

  • Fixed bug preventing proper printing of exit flag on failed solve.

7/10/15

  • Added mpopt as optional second argument to most().

7/9/15

  • Removed all of the old indexing fields from md_init().
  • Added most to have_fcn().
  • Added most options to mpoption(), added mpoption_info_most().

7/2/15

  • Renamed loadmpsd() to loadmd(), mpsd_init() to md_init(), mpsd to md.

7/1/15

  • Added plot_uc() function for plotting unit commitment schedules.

6/19/15

  • Moved lots of mpsopf related files to matpower/dist/most temporarily.
  • Commented out call to oldidx().

6/12/15

  • In loadmpsd() xgd.CommitKey must be non-empty (in addition to just being present) in order to process unit commitment fields.

6/10/15

  • Added fixed_gencost field to flow-specific mpc fields to save the fixed cost portion that is removed from gencost, to allow for computation of full flow-specific generator costs from solution.

6/9/15

  • Modified filter_ramp_transitions() to multiply conditional probability of transition by conditional probability of being in source state (assuming we've made it to that period) before applying cutoff threshold. This will typically cut off more transitions for the same threshold value.
  • Minor fixes, updates to plot_gen().

5/21/15

  • Forked development from mpsopfl_fixed_res(), which is currently identical except for function names in error messages.