Is there an application where a positive Voltage Droop is usefull?

In the Unitrol 1010 the Voltage Droop can be set with a positive or a negative value.The reactive load shering is posible with both, positive or negative Droop parámeter. But as i understand. A negative parameter would be better. The governor would tend to reduce the perturbation even before reaching the equilibrium.Am i wrong? Is there any improvement in using a positive droop.(for example +3÷)

Hi Joaquin, I can't think of any normal application where you would set your droop control setting to a positive value. The only time it might be set like that, would be when connecting generators of different types or manufacturers, where having all generators set with the same negative droop setting may cause one of the generators to motor and then you could set that generator with a less negative value than the others or even push the value into a positive value to try to get that particular unit to output in line with the other units to compensate for manufacturing tolerances etc.

I even work with  a facility with all the engines with positive droop. I have to say that every generator has it's own transformer (400/13100).I guess that the transformer reactance has it's own Drooping effect.

Interesting, what kind of facility?Generation onto the national grid?

Industrial Oil&Gas related industry. In isolated operation.3 engines of nominal power 1.4 MW. At low load in normal operation.I don't know why but it works. And a change in parámeter would require a shutdown of the facility.

Thanks for getting back to me. I guess in that instance it wouldn't matter what the droop setting was as long as all engines are set the same and are from the same manufactures.