13. A generator rated 30 MVA, 11 kV has a direct-axis subtransient reactance of 0.3 p.u. the negative and zero sequence reactances are 0.45 and 0.15 p.u. respectively. The neutral is solidly grounded. Determine the subtransient current in the generator when a line to ground fault occurs at the terminals of the generator with the generator running on no load at rated voltage. Ignore resistance.

Q: A fault occurs at bus 4 of the network shown in Figure Q3. Pre-fault nodal voltages throughout the…

A: x=1y=7Note: reactance of element right to bus 4 is not given. Hence we will not consider that in…

Q: cance is X = ault occurs at the generator terminals. 0.20 pu. The generator is operating at rated…

A: In this question we will find magnitude of the steady state per phase fault current ...

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Q: Problem #2: A transformer is fed from a generator via a 5-cycle breaker. Generator reactance are:…

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Q: A 25 MVA, II kV generator has X"d=0.2 p.u. X2 = 0.3p.u. and X0=0.1 p.u. Tht neutral of generator is…

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Q: If a 3-phase, 2-pole, 11 kV, 10 MVA synchronous generator has current balance protection which…

A: Rating of synchronous generatorwe have to find% of the winding protected protected from earth fault…

Q: Three identical steam-turbine generators G1, G2, and G3 are operating in parallel. Each generator…

A: Given data,Each generator rating-7.2KV, 21 MVA, 50Hz, 0.85 PF lagging, 4-Poles,…

Q: b) A fault occurs at bus 2 of the network shown in Figure Q3. Pre-fault nodal voltages throughout…

A:

Q: Three identical steam-turbine generators G1, G2, and G3z are operating in parallel. Each generator…

A: Given Three generators are in parallel Power frequency slope are SP1=4.2 MW/HzSP2=4.5 MW/HzSp3=4.4…

Synchronous Generator

In comparison to an asynchronous generator, it is a machine where the rotor speed is equal to the rotating magnetic field produced by the stator, i.e., mechanical speed is equal to the electrical speed, thus called synchronous, and not asynchronous.

Salient Pole Rotor

Salient pole rotor includes a large number of exposed poles mounted on a magnetic wheel. The construction of a bright pole is as shown in the image on the left. The proposed poles are made of metal laminations. The rotor winding is provided on these poles and is supported by pole shoes.