ANL-CEEESA/UnitCommitment.jl
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Profiled units: minor changes

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Alinson S. Xavier
2023-05-19 10:38:35 -05:00
parent 316d0bdf5a
commit 4adb3344ac
2 changed files with 9 additions and 8 deletions
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11
docs/src/format.md
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@@ -70,7 +70,10 @@ This section describes the characteristics of each bus in the system.
### Generators ### Generators
This section describes all generators in the system, including thermal units, renewable units and virtual units. Two types of generators can be specified - thermal units and profiled units. A thermal unit consists of different fields, while a profiled unit is a simple generator with only a production capacity and a per-unit cost. This section describes all generators in the system. Two types of units can be specified:
- **Thermal units:** Units that produce power by converting heat into electrical energy, such as coal and oil power plants. These units use a more complex model, with binary decision variables, and various constraints to enforce ramp rates and minimum up/down time.
- **Profiled units:** Simplified model for units that do not require the constraints mentioned above, only a maximum and minimum power output for each time period. Typically used for renewables and hydro.
#### Thermal Units #### Thermal Units
@@ -90,7 +93,7 @@ This section describes all generators in the system, including thermal units, re
| `Initial power (MW)` | Amount of power the generator at time step `-1`, immediately before the planning horizon starts. | Required | N | `Initial power (MW)` | Amount of power the generator at time step `-1`, immediately before the planning horizon starts. | Required | N
| `Must run?` | If `true`, the generator should be committed, even if that is not economical (Boolean). | `false` | Y | `Must run?` | If `true`, the generator should be committed, even if that is not economical (Boolean). | `false` | Y
| `Reserve eligibility` | List of reserve products this generator is eligibe to provide. By default, the generator is not eligible to provide any reserves. | `[]` | N | `Reserve eligibility` | List of reserve products this generator is eligibe to provide. By default, the generator is not eligible to provide any reserves. | `[]` | N
| `Commitment status` | List of commitment status over the time horizon. At time `t`, if `true`, the generator must be commited at that time period; if `false`, the generator must not be commited at that time period. If `null` at time `t`, the generator's commitment status is then decided by the model. By default, the status is a list of `null` values. | `[null]` | Y | `Commitment status` | List of commitment status over the time horizon. At time `t`, if `true`, the generator must be commited at that time period; if `false`, the generator must not be commited at that time period. If `null` at time `t`, the generator's commitment status is then decided by the model. By default, the status is a list of `null` values. | `null` | Y
#### Profiled Units #### Profiled Units
@@ -99,8 +102,8 @@ This section describes all generators in the system, including thermal units, re
| `Bus` | Identifier of the bus where this generator is located (string). | Required | N | `Bus` | Identifier of the bus where this generator is located (string). | Required | N
| `Type` | Type of the generator (string). For profiled generators, this must be `Profiled`. | Required | N | `Type` | Type of the generator (string). For profiled generators, this must be `Profiled`. | Required | N
| `Cost ($/MW)` | Cost incurred for serving each MW of power by this generator. | Required | Y | `Cost ($/MW)` | Cost incurred for serving each MW of power by this generator. | Required | Y
| `Minimum power (MW)` | Minimum amount of power to be supplied by this generator. Any amount greater than this may be supplied. | `0.0` | Y | `Minimum power (MW)` | Minimum amount of power this generator may supply. | `0.0` | Y
| `Maximum power (MW)` | Maximum amount of power to be supplied by this generator. Any amount lower than this may be supplied. | Required | Y | `Maximum power (MW)` | Maximum amount of power this generator may supply. | Required | Y
#### Production costs and limits #### Production costs and limits

6
src/model/formulations/base/unit.jl
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@@ -24,6 +24,7 @@ function _add_unit_commitment!(
_add_min_uptime_downtime_eqs!(model, g) _add_min_uptime_downtime_eqs!(model, g)
_add_startup_cost_eqs!(model, g, formulation.startup_costs) _add_startup_cost_eqs!(model, g, formulation.startup_costs)
_add_status_eqs!(model, g, formulation.status_vars) _add_status_eqs!(model, g, formulation.status_vars)
_add_commitment_status_eqs!(model, g)
return return
end end
@@ -61,7 +62,6 @@ function _add_unit_dispatch!(
sc, sc,
) )
_add_startup_shutdown_limit_eqs!(model, g, sc) _add_startup_shutdown_limit_eqs!(model, g, sc)
_add_commitment_status_eqs!(model, g, sc)
return return
end end
@@ -274,15 +274,13 @@ end
function _add_commitment_status_eqs!( function _add_commitment_status_eqs!(
model::JuMP.Model, model::JuMP.Model,
g::ThermalUnit, g::ThermalUnit,
sc::UnitCommitmentScenario,
)::Nothing )::Nothing
is_on = model[:is_on] is_on = model[:is_on]
T = model[:instance].time T = model[:instance].time
eq_commitment_status = _init(model, :eq_commitment_status) eq_commitment_status = _init(model, :eq_commitment_status)
for t in 1:T for t in 1:T
# Fix commitment status
if g.commitment_status[t] !== nothing if g.commitment_status[t] !== nothing
eq_commitment_status[sc.name, g.name, t] = @constraint( eq_commitment_status[g.name, t] = @constraint(
model, model,
is_on[g.name, t] == (g.commitment_status[t] ? 1.0 : 0.0) is_on[g.name, t] == (g.commitment_status[t] ? 1.0 : 0.0)
) )