Add a method to know if a tap changer is at its max or min tap position

[annetill]

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

A new feature.

• What is the current behavior?

You have three methods in a RatioTapChanger or in a PhaseTapChanger that are getTapPosition, getHighTapPosition and getLowTapPosition, and with these three method we can know if the tap changer is at its max or min. I think that it could be interested to think about a more convient method that will say if the tap changer has reached its min or its max after a calculation for example.

• 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?

• 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)

(if a question doesn't apply, you can delete it)

[sylvlecl]

I think this information could go into loadflow and security analysis results, like other information about regulations.

If we do it in the network:

• it's just a "shortcut" method, which we have avoided in other places (like shortcuts for getTerminal().getP(), so not sure it would be very consistent
• more importantly, just checking if the tap is equal to min/max does not mean that it has been blocked during a calculation, it does not necessarily mean that the regulation wanted to go further

[annetill]

Ok ! Thanks !