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Gnetting the generators

There are a few generators in the network whose dynamic models are not available. To proceed with dynamic simulation, I am supposed to gnet the said generators (convert them into negative loads). One strange behaviour I have noticed is that after initialization and no-disturbance run for x seconds, I see the gnetted buses have loads with 0 MW and 0 Mvar. It may be noted that the generator conversion activity is performed prior to gnetting. What could be the possible cause? Any help will be highly appreciated. Thanks.

Gnetting the generators

There are a few generators in the network whose dynamic models are not available. To proceed with dynamic simulation, I am supposed to gnet the said generators (convert them into negative loads). One strange behaviour I have noticed is that after initialization and no-disturbance run for x seconds, I see the gnetted buses have loads with 0 MW and 0 Mvar. It may be noted that the generator conversion activity is performed prior to gnetting. What could be the possible cause? Any help will be highly appreciated. Thanks.