Modeling of tap changer voltage control

[annetill]

• Do you want to request a feature or report a bug?

A feature.

• What is the current behavior?

In the current version, only the current tap is used to build the equation system. But ratio tap changer could have voltage regulating capabilities.

• If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem

• What is the expected behavior?

Ratio tap changers can regulate voltage locally and remotely. We have planned to model this regulation in the first NR in seeing the ratio of these branches as a continuous variable and to discretize after the first resolution.

What about shared control ? It is allowed ? Observed ?

• What is the motivation / use case for changing the behavior?

• Please tell us about your environment:

  • PowSyBl Version: ...
  • OS Version: ...

• Other information (e.g. detailed explanation, stacktraces, related issues, suggestions how to fix, links for us to have context, eg. stackoverflow, spectrum, etc)

The same approach have been followed for active power control of phase tap changer.

[annetill]

I don't close this issue because I have still some factorization issues of some CGMES test cases. Then, if a bus is both controlled by a generator and a transformer, the transformer voltage control is disabled.