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Recent Releases of H2Integrate

H2Integrate - v0.4.0

This release introduces significant new technology models and framework capabilities for system design and optimization, alongside major refactoring and user experience improvements.

New Features and Technology Models

  • Added capability for user-defined technologies in the H2Integrate framework, allowing for custom models to be integrated into the system PR 128.
  • Added a check for if a custom model's name clashes with an existing model name in the H2Integrate framework, raising an error if it does PR 128.
  • Added geologic hydrogen (GeoH2) converter and examples PR 135.
  • Added methanol production base class PR 137.
  • Added steam methane reforming methanol production technology PR 137.
  • Added CO2 hydrogenation methanol production technology PR 137.
  • Added run of river hydro plant model, an example, and a documentation page PR 145.
  • Added marine carbon capture base class PR 165.
  • Added direct ocean capture technology PR 165.
  • Added ammonia synloop, partially addressing Issue 169 PR 177.
  • Added simple air separation unit (ASU) converter to model nitrogen production PR 179.
  • Added rule-based storage system control capability (e.g., for battery, H2, CO2) PR 195.
  • Added ocean alkalinity enhancement technology model PR 212.
  • Added natural_gas_performance and natural_gas_cost models, allowing for natural gas power plant modeling PR 221.
  • Added wind resource model, API baseclasses, updated examples, and documentation PR 245.
  • Added generic storage model, useful for battery, hydrogen, CO2, or other resource storage PR 248.

Improvements and Refactoring

  • Removed the to_organize directory PR 138.
  • Updated the naming scheme throughout the framework so resources produced always have _out and resources consumed always have _in in their names PR 148.
  • Added ability to export ProFAST object to yaml file in ProFastComp PR 207.
  • Refactored ProFastComp and put in a new file (h2integrate/core/profast_financial.py). Added flexibility to allow users to specify different financial models PR 218.
  • Revamped the feedstocks technology group to allow for more precise modeling of feedstock supply chains, including capacity constraints and feedstock amount consumed PR 221.
  • Made pipe and cable substance-agnostic rather than hard-coded for hydrogen and electricity PR 241.
  • Updated option to pass variables in technology interconnections to allow for different variable names from source to destination in the format [source_tech, dest_tech, (source_tech_variable, dest_tech_variable)] PR 236.
  • Split out the electrolyzer cost models basic and singlitico for clarity PR 147.
  • Refactored the ammonia production model to use the new H2Integrate framework natively and removed the prior performance and cost functions PR 163.
  • Added a new ammonia production model which has nitrogen, hydrogen, and electricity inputs and ammonia output, with performance and cost functions PR 163.
  • Added WOMBAT electrolyzer O&M model PR 168.
  • Changed electrolyzer capacity to be specified as n_clusters rather than rating in electrolyzer performance model config PR 194.
  • Changed electrolyzer capacity to be an input to the electrolyzer cost models rather than pulled from the cost model config PR 194.
  • Added cost model base class and removed plant_config['finance_parameters']['discount_years']['tech']. Cost year is now an optional input (tech_config[tech]['model_inputs']['cost_parameters']['cost_year']) and a discrete output PR 199.
  • Added two ATB-compatible solar-PV cost models PR 193.
  • Update PySAM solar performance model to allow for more user-configurability PR 187.
  • Added "custom_electrolyzer_cost" model, an electrolyzer cost model that allows for user-defined CapEx and OpEx values PR 227.
  • Added variable O&M to CostModelBaseClass and integrated into finance-related models PR 235.
  • Improved h2integrate/transporters/power_combiner.py and enabled usage of multiple electricity producing technologies PR 232.

Configuration and Optimization

  • Updated finance parameter organization naming in plant_config PR 218.
  • Changed finance handling to use finance_subgroups and finance_groups defined in the plant_config rather than previous financial_groups in the tech_config and technologies_to_include_in_metrics in plant_config PR 240.
  • Allow users to specify the technologies to include in the metrics calculations in the plant configuration file PR 240.
  • Added option for user to provide ProFAST parameters in finance parameters PR 240.
  • Changed plant_config atb_year entry to financial_analysis_start_year PR 190.
  • Added simulation section under plant_config['plant'] that has information such as number of timesteps in the simulation, time step interval in seconds, simulation start time, and time zone PR 219.
  • Moved overwrite_fin_values to HOPP PR 164.
  • Enable optimization with HOPP technology ratings using recreate_hopp_config_for_optimization PR 164.
  • Made caching in the HOPP wrapper optional PR 164.
  • Added more available constraints from the HOPP wrapper useful for design optimizations PR 164.

Documentation, Examples, and Miscellaneous

  • Added an example of a user-defined technology in the examples directory, demonstrating an extremely simple paper mill model PR 128.
  • Added example for running with HOPP as the only technology in the H2Integrate system PR 164.
  • Added an optimization example with a wind plant and electrolyzer to showcase how to define design variables, constraints, and objective functions PR 126.
  • Expanded docs to include a new section on modifying config dicts after model instantiation PR 151.
  • Added *_out/ to .gitignore to avoid clutter PR 191.
  • Bump min Python version and removed unnecessary packages from pyproject.toml PR 150.
  • Bugfix: only run pyxdsm when there are connections in the system PR 201.

Energy Systems - Energy System Modeling Frameworks - PowerBuilder
Published by johnjasa 3 months ago

H2Integrate - v0.3.0

What's changed

This release features a large-scale framework overhaul as we increase H2Integrate's modularity and capabilities.
We introduce a new core framework that uses OpenMDAO to handle the data-passing, model debugging, and optimization capabilities used in H2Integrate.
This release is missing some features previously available in H2Integrate; please use v0.2.0 for the prior framework with additional features.
Future efforts and releases will expand the capabilities of H2Integrate.

Energy Systems - Energy System Modeling Frameworks - PowerBuilder
Published by johnjasa 8 months ago

H2Integrate - v0.2 Release

What's Changed

New Contributors

Full Changelog: https://github.com/NREL/H2Integrate/compare/v0.1.4...v0.2

Energy Systems - Energy System Modeling Frameworks - PowerBuilder
Published by RHammond2 9 months ago

H2Integrate - v0.1.4

What's Changed

  • Added CoolProp to pyproject.toml
  • Changed units of lcoe_real in HOPPComponent from "MWh" to "kWh"
  • Added pre-commit, ruff, and isort checks, and CI workflow to ensure these steps aren't
    skipped.
  • Updates steel and ammonia cost years to 2022
  • Requires HOPP 3.1.1 or higher and removed support for python 3.9
  • Add steel feedstock transport costs (lime, carbon, and iron ore pellets)
  • Allow individual debt rate, equity rate, and debt/equity ratio/split for each subsystem
  • Add initial docs focused on new GreenHEART development
  • New documentation CI pipeline to publish documentation here
    that the documentation site will build on each pull request

Full Changelog: https://github.com/NREL/GreenHEART/compare/v0.1.3...v0.1.4

Energy Systems - Energy System Modeling Frameworks - PowerBuilder
Published by johnjasa 11 months ago

H2Integrate - v0.1.3

What's Changed

Full Changelog: https://github.com/NREL/GreenHEART/compare/v0.1.1...v0.1.3

Energy Systems - Energy System Modeling Frameworks - PowerBuilder
Published by RHammond2 about 1 year ago

H2Integrate - v0.1.1

Small changes and improvements to examples ahead of the NAWEA workshop.

Energy Systems - Energy System Modeling Frameworks - PowerBuilder
Published by johnjasa about 1 year ago

H2Integrate - v0.1 Release

First public release with GreenHEART as its own package.

Energy Systems - Energy System Modeling Frameworks - PowerBuilder
Published by RHammond2 about 1 year ago