Oscillations in Voltage/Current in 750 kW Genset
Oscillations in Voltage/Current in 750 kW Genset
(OP)
This 480V, 750 kW generator set is on a isolated power system (barge) and will be replaced as part of a modification package we are working on.
The client has provided some recorded data of the power system and I can see a small oscillation in the voltage and current waveforms.
The oscillations are at about 15 Hz, which might put the oscillation at rotational speed for the generator. The magnitudes are relatively small, 1V & 30A.
Has anyone run into this before? If it's caused by the genset, no problem, the whole thing is getting ripped out. My concern is that it might be some load on the barge that we don't know about.
Thanks in advance for any assistance.
The client has provided some recorded data of the power system and I can see a small oscillation in the voltage and current waveforms.
The oscillations are at about 15 Hz, which might put the oscillation at rotational speed for the generator. The magnitudes are relatively small, 1V & 30A.
Has anyone run into this before? If it's caused by the genset, no problem, the whole thing is getting ripped out. My concern is that it might be some load on the barge that we don't know about.
Thanks in advance for any assistance.





RE: Oscillations in Voltage/Current in 750 kW Genset
But stick around for the experts...
David Castor
www.cvoes.com
RE: Oscillations in Voltage/Current in 750 kW Genset
To further verify you may want to measure your AVR field output, is it stable?
In general a single generator feeding normal loads like you would find on a barge will never be rock solid, 1 volt and 30 amps sounds like a better than normal load on most marine systems I see.
What kind of work does this barge do?
Mike L.