Test my Merit My Results Create Exam

Higher Study | Power Systems | PU System and Symmetrical Components

The following figure shows zero sequence equivalent circuits of
A 2-bus system and corresponding zero sequence network are shown in the figure. The transformers T1 and T2 are connected as
The zero-sequence circuit of the three-phase transformer shown in the figure is (consider that the star is solidly grounded
A 50 Hz synchronous generator is initially connected to a long lossless transmission line which is open circuited at the receiving end. With the field voltage held constant, the generator is disconnected from the transmission line. Which of the following may be said about the steady state terminal voltage and field current of the generator?
Three synchronous generators, each of which is rated to 100 MVA, 11 KV, have an impedance per unit of 0.15. If all three generators are replaced by a single equivalent generator, what will be the effective per unit impedance of each generator?
Ads