Dear collegues,
Is it possible to operate an autotransformer 74MVA YN,a0d11, 275/66/11kV, 10%, in parallel with a normal three winding power transformer 74MVA, YNyn0d1, 275/66/11kV, 11.2%,? Can an autotransformer ever be operated in parallel with a conventional power transformer? Need help from...
We have three 12/220kV, 40MVA generator transformers with impedance voltage at 10.8% that are paralled. We have run out of capacity and the only other transformer immediately available is rated 18/330kV, 125MVA impedance voltage at 12%. As an interim measure can we connect this unit in parallel...
Could someone please advise on whether it is possible to use a busbar connected series reactor (11kV, 5MVA) in shunt mode connected to the same busbar (i.e. converting a series reactor into a shunt reactor)? What are the design and construction differences between a series and a shunt reactor?
Is a reactor circuit breaker specified in the same way as that of a Transformer or a line? If not what special features make a different? Please help me.I have lost now two 66kV circuit breakers on the reactor even when the breaking current was far much higher and fault level was considered.
At one of our substation, we have two 40MVA, 88/33kV, star/delta transformers with 8.4% impedance voltage. These units are earthed through zigzag earthing transformers on 33kV side. Recently, we had a fault on 33kV side of one of these transformers (33kV surge diverter shuttering in the...
