R
Let me first talk briefly about the bearing positions. There are a total of 7 bearings on the shaft in turbogenerator set, starting with the 1st bearing from HP turbine side, the 6th bearing is the bearing in between LP turbine and turbogenerator. The 7th bearing is the bearing in between turbogenerator and the Exciter. When we try to increase the load the M/C requires more VAR, and with increase in VAR the there are increases in vibration in 6th bearing (horizontal), though both 6th and 7th bearings are on the same shaft on both sides of the generator. There is no abnormality found in 7th bearing (horizontal). So because of this problem it is not possible to increase the load further beyond a certain limit, say 170 MW.
Could anybody please help us in solving this problem? What may be the cause of the problem?
Waiting for sincere and early reply.
Could anybody please help us in solving this problem? What may be the cause of the problem?
Waiting for sincere and early reply.