Bonus
Question:
A Power station has three section Busbars with 11 KV generators on the ring system as under:
Section 1: Two Generators of 30 MVA & 20 MVA with 0.15pu & 0.12pu reactance respectively.
Section 2: One Generator of 60 MVA and 0.2pu reactance
Section 3: Two Generators of 30 MVA & 60 MVA with 0.18pu & 0.2pu reactance respectively.
Sections 1 & 2, 2 &3, 3 & 1 are connected through reactors of rating 60 MVA,90 MVA & 80 MVA with reactance 0.2pu, 0.3pu, 0.24pu respectively.
A Power station has three section Busbars with 11 KV generators on the ring system as under:
Section 1: Two Generators of 30 MVA & 20 MVA with 0.15pu & 0.12pu reactance respectively.
Section 2: One Generator of 60 MVA and 0.2pu reactance
Section 3: Two Generators of 30 MVA & 60 MVA with 0.18pu & 0.2pu reactance respectively.
Sections 1 & 2, 2 &3, 3 & 1 are connected through reactors of rating 60 MVA,90 MVA & 80 MVA with reactance 0.2pu, 0.3pu, 0.24pu respectively.
- Determine the fault Current when a
3 -phase Symmetrical fault occurs at the far end of the feeder with a 0.05pu reactance
& 0.01pu resistance
on 30 MVA base, connected to Section number Three.
- Calculate the current Supplied by
60 MVA Generator on section 3 bus under fault condition.
Answer:
- 17800 A
- 6760 A
For Solution Click Here
1 comments:
It will be better if u post the solutions for the same in the form of diagrams..
ReplyPost a Comment