Skip to content

Market configs with multiple counts AND Agents having Timestep-to-Timestep constraints can yield infeasible dispatch #711

@gugrimm

Description

@gugrimm

In cases where the market clears multiple timesteps at the same time (e.g. duration=1h, count=24) AND agents have constraints that span multiple timesteps (e.g. ramping, SoC, min_up and min_down_time), the clearing might yield results, that are not feasible from the units perspective. This is because to account for these, we need the deterministic state/dispatch of a unit. But this state/dispatch might be unknown at the time of bidding to the market.
Simple illustrative example: A losless storage bids volumes [-1000, -1000, 0, 1000, 1000] at prices [20, 30, 0, 40, 40], so it wants to charge first and then dispatch later. It might happen that the first 2 bids are not accepted but the last are accepted. We then create energy from nothing. The dispatch plan is currently not adjusted in the units logic.

Potential solutions to discuss:

  • only allow linked bids including these intertemporal dependencies when having a market with count > 1
  • in the units dispatch plan: Adjust accordingly and do not deliver the energy if it is not there. But then the whole clearing is wrong. Demand might not be met.
  • introduce a market with count=1, opening frequency=1h, duration=1h (IDA market) where units can readjust in both directions

Immediate steps:

  • Adjust documentation
  • Warn users when markets with count > 1 are initialized

Metadata

Metadata

Assignees

No one assigned

    Labels

    Type

    No type

    Projects

    No projects

    Milestone

    No milestone

    Relationships

    None yet

    Development

    No branches or pull requests

    Issue actions