powsybl-open-loadflow
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powsybl
Behaviour of initialization on previous values
- Do you want to request a feature or report a bug?
Ambiguous.
- What is the current behavior?
When using PREVIOUS_VALUES as initialization option, we may get an exception with following message:
Voltage magnitude is undefined for bus '****'
This can make that option hard to use, because it can happen even after a very minor topology change.
- What is the expected behavior?
To be discussed: we might want to fill the holes when they occur ? Or maybe we could fall back on a DC values initialization ? Alternatively, maybe this issue must be left for the user to handle, through a try/catch for example, or ensuring that he uses that option only when he is sure to have results on all buses.
In case of any operator strategy in the security analysis, we have added this fall back (https://github.com/powsybl/powsybl-open-loadflow/blob/main/src/main/java/com/powsybl/openloadflow/network/util/PreviousValueVoltageInitializer.java). We can discuss now added this for the contingency state computation. @sylvlecl what do you think?
