In our process, we use to make measurements in our power generation for a large scale of active power.

But in our synchronous compensator We use to make the same thing, but for different reactive power. I don't know the effective theses measurements, because if we have some problem in the field, is possible detect for one reactive power only, for example the rated reactive power lagging, in our case -18 MVAr.
The fact is: In our procedure, we have to make vibrations's measurements in -18, -10, 0, 5, 10 and 30 MVAr. I think that one measurement in 18 MVar for example is enough!

I would like to know what the worst condition for vibration in synchronous condenser (compensator)!?