Minor fixes

.gitignore

@@ -40,3 +40,4 @@ docs/src/tutorials/usage.md
 docs/src/tutorials/customizing.md
 docs/src/tutorials/market.md
 docs/src/tutorials/lmp.md
+*-off.md

CHANGELOG.md

@@ -18,7 +18,6 @@ All notable changes to this project will be documented in this file.
 - Add time decomposition methods
 - Add scenario decomposition methods (progressive hedging)
 - Add support for energy storage units
-- Add support for network interfaces
 - Rewrite documentation with runnable examples
 
 ## [0.3.0] - 2022-07-18

docs/src/guides/format.md

@@ -11,7 +11,7 @@ An instance of the stochastic security-constrained unit commitment (SCUC) proble
 - [Reserves](#Reserves)
 - [Contingencies](#Contingencies)
 
-Each section is described in detail below. See [case118/2017-01-01.json.gz](https://axavier.org/UnitCommitment.jl/0.3/instances/matpower/case118/2017-01-01.json.gz) for a complete example.
+Each section is described in detail below. See [case118/2017-01-01.json.gz](https://axavier.org/UnitCommitment.jl/0.4/instances/matpower/case118/2017-01-01.json.gz) for a complete example.
 
 ### Parameters
 
@@ -31,7 +31,7 @@ This section describes system-wide parameters, such as power balance penalty, an
 ```json
 {
   "Parameters": {
-    "Version": "0.3",
+    "Version": "0.4",
     "Time horizon (h)": 4,
     "Power balance penalty ($/MW)": 1000.0,
     "Scenario name": "s1",

docs/src/guides/problem.md

@@ -616,65 +616,3 @@ y^\text{flow}_{slt} = \sum_{b \in B} \delta_{sbl} y^\text{inj}_{sbt}
 \end{align*}
 ```
 
-## 8. Transmission interfaces
-
-In some applications, such as energy exchange studies, it is important to
-enforce flow limits not only on individual lines, but also on groups of
-transmission lines. These groups are known as _interfaces_. More precisely, an
-interface is composed by two sets of lines: the _inbound_ and the _outbound
-lines_. The flow across the interface is defined as the sum of the flow in all
-inbound lines minus the sum of the flow in all outbound lines. An upper and a
-lower limit may be imposed on the flow across the interface, and a penalty is
-imposed if the limit is exceeded.
-
-### Sets and constants
-
-| Symbol                      | Unit  | Description                                                                                |
-| :-------------------------- | :---- | :----------------------------------------------------------------------------------------- |
-| $L^\text{inbound}_{si}$     |       | Set of inbound lines for interface $i$ in scenario $s$.                                    |
-| $L^\text{outbound}_{si}$    |       | Set of outbound lines for interface $i$ in scenario $s$.                                   |
-| $M^\text{limit-down}_{sit}$ | MW    | Lower flow limit for interface $i$ at time at time $t$ and scenario $s$ (negative number). |
-| $M^\text{limit-up}_{sit}$   | MW    | Upper flow limit for interface $i$ at time at time $t$ and scenario $s$ (positive number). |
-| $Z^\text{overflow}_{sit}$   | \$/MW | Overflow penalty for interface $l$ at time $t$ and scenario $s$.                           |
-| $\text{IF}$                 |       | Set of transmission interfaces.                                                            |
-
-### Decision variables
-
-| Symbol                      | JuMP name                   | Unit | Description                                                      | Stage |
-| :-------------------------- | :-------------------------- | :--- | :--------------------------------------------------------------- | :---- |
-| $y^\text{i-flow}_{sit}$     | `interface_flow[s,i,t]`     | MW   | Flow across interface $i$ at time $t$ and scenario $s$.          | 2     |
-| $y^\text{i-overflow}_{sit}$ | `interface_overflow[s,i,t]` | MW   | Flow above limit for interface $i$ at time $t$ and scenario $s$. | 2     |
-
-### Objective function terms
-
-- Penalty for exceeding interface limits:
-
-```math
-  \sum_{s \in S} p(s) \left[
-    \sum_{i \in \text{IF}} \sum_{t \in T} y^\text{i-overflow}_{sit} Z^\text{overflow}_{sit}
-  \right]
-```
-
-### Constraints
-
-- Definition of interface flow (`eq_if_flow`):
-
-```math
-y^\text{i-flow}_{sit} = \sum_{b \in B} y^\text{inj}_{sbt} \left[
-\sum_{l \in L^\text{outbound}_{si}} \delta_{sbl} -
-\sum_{l \in L^\text{inbound}_{si}} \delta_{sbl}
-\right]
-```
-
-- Interface flow limits (`eq_if_limit_up` and `eq_if_limit_up`)
-
-```math
-\begin{align*}
- y^\text{i-flow}_{sit} & \leq M^\text{limit-up}_{sit} + y^\text{i-overflow}_{sit} \\
--y^\text{i-flow}_{sit} & \leq -M^\text{limit-down}_{sit} + y^\text{i-overflow}_{sit}
-\end{align*}
-```
-
-## 9. Contingencies
-
-## 10. Reserves