We are using two 30,000 kVA, 0.8PF, 2 pole, 11KV, 50Hz alternator for captive power generation for a large fertilizer complex (captive power) in a gas based power plant. Both GTs' run in parallel. One is in Iso and one is in droop.
Till recently we were using a capacitor bank to maintain power factor (PF) of generation. Now,a senior officer has objected to it and have removed the capacitor bank. earlier our power factor was maintained around 0.86-0.88 now it has come down to 0.82-0.83. the reason which he gave, is that capacitor bank is maintaining the line load rather than generated load and this may result in generator trip owing to some line fault!
As far as i understand, alternator only reacts to the external load demand and as most of the load in complex is inductive henceforth obviously there has to be a lag in voltage and current.
Now my question is, is it really justifiable to remove capacitor bank entirely?
We were or are wrong?
Regards
fluidflow
Till recently we were using a capacitor bank to maintain power factor (PF) of generation. Now,a senior officer has objected to it and have removed the capacitor bank. earlier our power factor was maintained around 0.86-0.88 now it has come down to 0.82-0.83. the reason which he gave, is that capacitor bank is maintaining the line load rather than generated load and this may result in generator trip owing to some line fault!
As far as i understand, alternator only reacts to the external load demand and as most of the load in complex is inductive henceforth obviously there has to be a lag in voltage and current.
Now my question is, is it really justifiable to remove capacitor bank entirely?
We were or are wrong?
Regards
fluidflow