jazzytoo
Electrical
- May 19, 2008
- 3
Hello Experts,
I am installing three 2.5 MW backup generators for a mining company. The generator will be used to backup the mines when the utility grid is not available, which will occur more frequently and for longer durations due to the utility's undersized capacity coupled with extreme growth. The motor on the Double Drum Vertical Shaft Winder gives out 6 MW of reverse power, when the winder motor is slowing down to a stop at the bottom depth of the 980-meter mine. I cannot use reverse power relay to protect the generator, because the winder will be carrying miners and an outage on the generator will put the miners' lives at risk. How can I dissipate the reverse power without disconnecting the generator?
I am installing three 2.5 MW backup generators for a mining company. The generator will be used to backup the mines when the utility grid is not available, which will occur more frequently and for longer durations due to the utility's undersized capacity coupled with extreme growth. The motor on the Double Drum Vertical Shaft Winder gives out 6 MW of reverse power, when the winder motor is slowing down to a stop at the bottom depth of the 980-meter mine. I cannot use reverse power relay to protect the generator, because the winder will be carrying miners and an outage on the generator will put the miners' lives at risk. How can I dissipate the reverse power without disconnecting the generator?