Wrapping function the PowerFlow function

[kennedy-mindermann]

No description provided.

[GabrielKS]

What does this consist of?

[kennedy-mindermann]

@jd-lara can you give more info on what this is supposed to be?

[jd-lara]

This is to do the same pattern as PSI and PSID where we do fail gracefully in the case of non convergence and return a status instead of failing. E.g.,

try
    solve_pf()
catch e
    @error e
finally 
    write_results()
    return status_success 
end
return status_fail