FlexMeasures / flexmeasures / 29637951816

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Build Type

Pull #2327

github

Committed by Flix6x

Commit Message

feat: fixed (no-load / commitment) cost per operation mode

Based on #2278 (operation-mode power bands).

Operation modes constrain a device's power to signed bands but carry no
fixed cost. Real unit-commitment has a no-load / commitment cost incurred
only while a unit is on (e.g. a cogeneration unit's full-speed-no-load
fuel burn). Without it, an LP/MILP that can idle a unit under-represents
the cost of staying on at low output.

Adds an optional per-mode `fixed-cost` (per timestep, in the flex-context
currency), incurred whenever that mode's binary is active:
- schema: OperationModeSchema.fixed-cost, parsed to a currency Quantity;
- objective: sum over (d,b,j) of device_band[d,b,j] * fixed_cost[d,b],
  threaded through device_scheduler as device_band_fixed_costs, mirroring
  the power bands;
- tests: a generator idles when marginal benefit < fixed cost, and the
  objective includes the fixed cost exactly when on (hand-computed);
- docs: changelog + metadata field.

Min-up / min-down time is out of scope (follow-up).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016MLCUiSdXDqDBmg8GbYp1B

Pull Request Pull Request #2327: feat: fixed (no-load / commitment) cost per operation mode

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15 of 26 new or added lines in 3 files covered. (57.69%)

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