Min/max generation for Generators by cpschau · Pull Request #1047 · PyPSA/PyPSA

cpschau · 2024-09-25T17:40:55Z

Changes proposed in this Pull Request

This PR introduces two new optional fields for generators, namely e_sum_min and e_sum_max. These fields restrict the overall amount of energy generated by the unit during a single optimization horizon within the constraint define_generators_constraints. Here, e_sum_min serves as the lower bound for generation, and e_sum_max as the upper bound.

The extension offers the following practical advantages:

The use of certain carriers in the system can be enforced via e_sum_min, such as imports of natural gas or the consumption of unsustainable biomass.
The finiteness of certain resources, such as biomass or CO2 sequestration, can be efficiently represented via the e_sum_max.

In comparison to the current modeling approaches using store and link components, it requires 1. fewer components, thereby increasing the sparsity of networks (1 generator vs. 1 store + 1 link), and 2. reduces the complexity of the linear program (LP) by eliminating the need for storage-consistency constraints.

Checklist

Code changes are sufficiently documented; i.e. new functions contain docstrings and further explanations may be given in doc.
Unit tests for new features were added (if applicable).
A note for the release notes doc/release_notes.rst of the upcoming release is included.
I consent to the release of this PR's code under the MIT license.

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* refactor: naming convention `network` -> `n` * refactor: naming `sub_network` and `sub-network` * refactor: naming `df` -> `static` * refactor: naming `dataframe` -> `df` * refactor: naming `pnl` -> `dynamic` * ignore linopy in type checking * docs: add release notes * fix: pre-commit * make dataclasses more robust * fix: missed pnl * fix docs * add some more deprecation decorators * fix type ignore

* add 4 kA high-temperature low-sag (HTLS) line type Based on data from JAO Static Grid Model. * Updated description in the user-guide: components.rst. --------- Co-authored-by: bobbyxng <[email protected]>

…added docstrings

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lkstrp

Some small stuff and I check for another test with snapshots

doc/references/release-notes.rst

pypsa/consistency.py

pypsa/optimization/constraints.py

test/test_consistency_check.py

Co-authored-by: Lukas Trippe <[email protected]>

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lkstrp

needs double check with test

fneum

Great!

pypsa/optimization/constraints.py

PriyeshGosai · 2024-10-09T09:59:25Z

Is it possible to include this function to links?

lkstrp · 2024-10-14T10:08:45Z

At least not planned in a similar approach. What is your use case for this?
A link is not a source, but must be linked to generators/stores and therefore does not justify the component extension with another attribute enough. Also, the implementation here is too specific for it to be extended nicely for other components at the moment.

FabianHofmann · 2024-10-14T13:06:25Z

I think generalizing it would be helpful. Often total transmission of individual links or total energy consumed/produced by conversion technologies such as electrolyzers need to be fixed per optimization horizon. The only question is whether the constraint should run on p0 or p1, where I would strongly lean towards p0.

A side note: I don't like the current naming of the constraint as it is very unspecific. When generalizing, i would prefer something like "define_total_production_constraint"

PriyeshGosai · 2025-01-03T09:49:39Z

@lkstrp I see that @FabianHofmann addressed the need for the generalization of this constraint. I agree with the use cases. I also agree we should set the constraint at p0.

SunnyBlueWhite · 2025-02-16T14:27:03Z

e_sum_max is a fixed value, how should I make it vary with the installed capacity?

fneum · 2025-02-17T10:11:44Z

e_sum_max is a fixed value, how should I make it vary with the installed capacity?

This feature is not implemented.

cpschau and others added 3 commits September 25, 2024 19:25

draft generator constraint

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extension by p_sum_min and p_sum_max

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cpschau changed the title ~~Minimum generation for Generators~~ Min/max generation for Generators Sep 26, 2024

cpschau requested a review from fneum September 26, 2024 15:37

lkstrp and others added 4 commits September 27, 2024 14:07

add 4 kA high-temperature low-sag (HTLS) line type (PyPSA#1046)

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* add 4 kA high-temperature low-sag (HTLS) line type Based on data from JAO Static Grid Model. * Updated description in the user-guide: components.rst. --------- Co-authored-by: bobbyxng <[email protected]>

changed attribute name from p_sum to e_sum; added consistency check; …

53926a9

…added docstrings

rename constraint function; add tests

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cpschau marked this pull request as ready for review September 27, 2024 12:12

cpschau requested a review from lkstrp September 27, 2024 12:13

cpschau and others added 2 commits September 27, 2024 14:20

Merge branch 'master' into generator_constraint

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lkstrp approved these changes Sep 27, 2024

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cpschau and others added 2 commits September 27, 2024 14:41

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Co-authored-by: Lukas Trippe <[email protected]>

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cpschau mentioned this pull request Sep 27, 2024

Replace bioenergy stores with generators PyPSA/pypsa-eur#1336

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lkstrp requested changes Sep 27, 2024

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lkstrp added 2 commits September 30, 2024 17:07

add test with snapshots

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docstring and indexing

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fneum approved these changes Oct 1, 2024

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resolve comments

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lkstrp merged commit 56135c0 into PyPSA:master Oct 1, 2024

This was referenced Oct 18, 2024

Replace bioenergy stores with generators PyPSA/pypsa-eur#1372

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Replace bioenergy and MSW stores with generators PyPSA/pypsa-eur#1373

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cpschau commented Sep 25, 2024 • edited Loading Uh oh! There was an error while loading. Please reload this page.

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PriyeshGosai commented Oct 9, 2024

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cpschau commented Sep 25, 2024 •

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