During stand still, the vertical machines usually rests on the thrust bearing which has soft babbit material to prevent scratch/damage to the journals. During running, the rotor is slightly lifted above the thurst bearing due to centrifugal action. Now when the machine is to be brought under...
Generator is the source as well as sink of VArs. When sourcing VArs, it operates at lagging power factor and when consuming VArs it operates at leading power factor. This is done by excitation current level. Low field current means leading PF and consumes VArs. High field current meand lagging...
I am given the task of fault studies of hydro power plant and to provide relay settings for each relay of generator and generator-transformer.
Is there any estblished procedure like calculating relay settings?
We have purchased 20 MVA power transformer as spare. Now the problem is its storage. Can any body give me some tips on the storage of power transformer.
kolo1