REAM-lab / switch

A Modern Platform for Planning High-Renewable Power Systems

http://switch-model.org/

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Support Planning reserves #44

Open staadecker opened 3 years ago

staadecker commented 3 years ago

Here's a summary of discussion on the planning reserves module for reference. We've decided to put work on this on hold for now.

Current state

Currently storage technologies can't contribute to planning reserves.
Currently all other technologies (incl. non-renewable) can contribute to planning reserves.

Issues

Storage is expected to be an important source of reserves in zero-emission scenarios.
In zero-emission scenarios, it doesn't make sense to have thermal plants as reserves.

Potential solutions

Allow different scenarios to specify which types of energy sources are allowed (e.g. one scenario allows only renewable).
Allow storage to contribute to planning reserves, this requires reformulating the model to consider state of charge of storage technologies. Pedro mentioned a 4-hour rule where storage technologies need to have enough storage for 4 hours to be considered as contributing to reserves (or something like that?).

staadecker commented 3 years ago

Update

Another thing I just noticed is that hydro is currently always credited its entire rated capacity for reserves (even if we can't dispatch nearly as much due to the average hydro flow constraint). @pesap @jszinai @PatyHidalgo

One solution is to rewrite the average hydro flow constraint to constrain a variable which is a maximum dispatch value and then to use that variable in the reserves module.