openego / eDisGo
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Adjusted the time exponent used in the heat storage energy constraint… (#717)

* Adjusted the time exponent used in the heat storage energy constraint for inter-time-step state-of-charge coupling. Now fractions of hours can be simulated.

* test(opf): pin the thermal storage standing loss to the elapsed time

The exponent fix of the previous commit has no test, and none of the existing
ones could have caught it: eDisGo_OPF.jl has no test suite of its own, and every
snapshot index in tests/opf/test_powermodels_opf.py is hourly, which is the one
resolution at which the old formula was right.

The test solves the OPF on a 15-minute index and checks the energy balance the
solver enforced. That is possible without forcing the storage power to zero
because both variables of the constraint are written back: heat_storage_t.e is
hse and heat_storage_t.p is phs, so

    e[t+1] == e[t] * (1 - p_loss)**(time_elapsed/24) - time_elapsed * p[t+1]

can be checked directly. It also asserts that the same balance does NOT hold
with the fixed 1/24 exponent, so the test fails if the old formula returns
rather than passing for both.

It needs the time_elapsed fix of #693 to pass: without it a 15-minute step
arrives as int(0.25) == 0, the decay becomes 1 and the coupling degenerates to
e[t+1] == e[t]. Verified both ways -- the test fails on this branch alone and
passes once #693's branch is merged in.

openego/eDisGo#697

* test(opf): solve the standing-loss test with Ipopt, not Gurobi

method="soc" runs the OPF through Gurobi, which needs a licence the CI does
not have -- the two existing OPF tests both use method="nc" for that reason.
The test passed locally and failed in CI.

Ipopt enforces the equality just as tightly: the balance holds to 1.1e-16 while
the fixed-exponent variant is off by 1.2e-3, so the 1e-6 tolerance still
separates the two by three orders of magnitude. Rechecked both ways, the test
passes with the fix and fails without it.

Also asserts the storage i... (continued)

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Source Files on dev

Recent builds

Builds Branch Commit Type Ran Committer Via Coverage
36383938974 dev Adjusted the time exponent used in the heat storage energy constraint… (#717) * Adjusted the time exponent used in the heat storage energy constraint for inter-time-step state-of-charge coupling. Now fractions of hours can be simulated. * test(o... push web-flow github
84.01
36118471475 dev Fix OPF time_elapsed calculation (#708) * Fix OPF time_elapsed calculation * Added test in test_powermodels_io.py for bug 693 to test implemented method -get_time_elapsed_in_hours(). * docs(whatsnew): record the time_elapsed fix Per repo conve... push web-flow github
84.01
36104705703 dev Weight line impedance by num_parallel when reducing the grid (#768) * fix(tools): weight line impedance by num_parallel when reducing A line that stands for several parallel systems came out of spatial_complexity_reduction with num_parallel time... push web-flow github
84.0
35856695870 dev fix(tools): do not abort pseudo coordinates on a meshed LV grid make_pseudo_coordinates aborted with NetworkXError: The node BranchTee_mvgd_32064_lvgd_8829100000_5 is not in the graph. on MV grid 32064, and with it the whole spatial_com... push joda9 github
83.99
35752408267 dev fix(opf): narrow flexibility inputs per interval in a split OPF (#763) When the time index is non-contiguous, pm_optimize splits it into contiguous intervals and solves each separately, narrowing the active index per interval with set_timeindex. ... push web-flow github
83.99
35732745361 dev Drop the dead bus-to-building-ID map in the PV rooftop import * docs(whatsnew): open a 0.3.1 section for post-release changes 0.3.0 was published on 2026-08-03 (daf14abc set the date, the tag and the PyPI upload followed), so its changelog secti... push web-flow github
83.86
35713700688 dev fix(run): carry opf_results onto the full grid in spatial_restore (#761) spatial_reduce stashes a deepcopy of the full grid before the OPF runs and spatial_restore returns that stash, but map_reduced_results_to_full_grid transfers only the flexib... push web-flow github
83.86
34829438930 dev Route the overlying grid's district-heating feed-in into the runner pipeline (#749) * fix(run): route the overlying grid's district-heating feed-in into the pipeline openego/eGo#202: the overlying grid's ``feedin_district_heating`` reached nothi... push web-flow github
83.8
33606063197 dev docs(whatsnew): open a 0.3.1 section for post-release changes 0.3.0 was published on 2026-08-03 (daf14abc set the date, the tag and the PyPI upload followed), so its changelog section describes a released artifact and must not keep growing. Every... push joda9 github
83.68
31697978258 dev fix(docs): update broken and redirected links The RLI master's thesis PDFs (Held 2023, Jahn 2022, Helfenbein 2021) returned 404; they now live behind publication landing pages, so the link text changes from "PDF" to "Publication page". DOIs that... push joda9 github
83.68
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