feat: add BC condition mode and slack allocation#506
Merged
Conversation
LeonHilf
requested changes
May 27, 2026
Collaborator
LeonHilf
left a comment
LeonHilf
left a comment
There was a problem hiding this comment.
Looks good overall. If possible, I would change the basecase_net to a basecase loadflowresult
|
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
3 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
SpPS condition mode (BC / CON)
SpPS condition rows now have a condition_mode field. The default CON behaviour is unchanged — conditions are checked against post-contingency results. The new BC mode checks a condition against the base-case results (before the contingency is applied), which is useful for protection schemes that should react to pre-existing overloads or voltage violations.
To support this, the engine now receives a full copy of the base-case network instead of just a voltage series, making all base-case result tables available for condition evaluation.
Slack re-allocation inside the SpPS loop
assign_slack_per_island is now called after every batch of SpPS actions (e.g. switch openings) before the subsequent power flow. This ensures that any new electrical islands created mid-loop always have a valid slack bus, preventing solver failures in cascading protection scenarios.
Simplified slack allocation
assign_slack_per_island no longer requires callers to pass a pre-built network graph or element lists. It now derives the post-outage topology directly from the network, removing boilerplate from every call site.