Fix power connector balance

[pierre-eliep-met]

Goal

Trying to fix #99 by adding a not_used effort variable into power connectors.

Type of change

• Bugfix (non-breaking change which fixes a bug/issue)
• New feature (non-breaking change which adds functionality)
• Refactoring (non-breaking change which reorganizes code)
• Release & Version Update (when cumulative changes justify a release)
• Documentation Update

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[valentind-met]

Ok for now. I still think we should find a better option.

[pierre-eliep-met]

This PR will be merged when we have a turbopump component, so that we don't hav any problem with turbopumps in our models

[pierre-eliep-met]

@casella & @AndreaBartolini I am trying to complete this PR so that it fixes the issue and all the related ones.

But I had a problem : I cannot set dummy=0 in the power connector of MetroscopeModelingLibrary/FlueGases/Machines/AirCompressor.mo, because otherwise it is not balanced. I think this is due to the fact that the compresser sets the power it needs based on its efficiency. But then we cannot set dummy (if it is actually the cause)

In fact this is a bit the same problem as for the turbopump I think @valentindrou...

[AndreaBartolini]

It is exactly the same of the turbopump, if the compressor sets the power then it cannot set also the dummy variable. If there is a scenario like the turbopump in that the compressor works at "load" then you need another specialized component (like turbopump)

[pierre-eliep-met]

Agreed, We've done a workaround with a Interfaces.RealInput/Output. We could not do this before with the turbopump because we needed the same power connector in the steam turbine case, so the dedicated component will be fine there.

This review is outdated and we need a new one

[pierre-eliep-met]

@valentindrou I will add the Turbopump component, no need for a review yet then

[pierre-eliep-met]

I am closing this PR since it is now completely outdated, and restarting from the beginning