Please find ATTACHED the assignment question. Extra notes and assignment data attached at the end of the questions. Matlab to be used for graphs.
Data for assignment is below::::
There are additional notes and information attached below. Please MATLAB to be used for the graph.
The tables are partly filled
The Data for the assignment:
Please note — CB3 closed in table 3—-
FMVA= maximum demand per feeder at 11 kV bus ( all feeder assumed identical)
RMVA= maximum demand per feeder at Recloser ( all feeders assumed identical)
MVA1 = transformer 1 MVA rating = MVA2= transformer 2 MVA rating;
X = pu leakage reactance of transformer 1; X = pu leakage reactance of transformer 2.
Zf+ = positive sequence impedance of 11 kV feeder ( CB6 to R1)
Zf0 = zero sequence impedance of 11 kV feeder ( CB6 to R1)
Zr+ = positive sequence impedance of 11 kV feeder ( R1 to end of feeder)
Zr0 = zero sequence impedance of 11 kV feeder ( R1 to end of feeder)
Z+ = positive sequence impedance from CB1 to T1 = 0 ( compared to X)
Z0 = zero sequence impedance from CB1 to T1 = 0 (compared to X)
( Transformers T1 and T2 are identical)
Assume transformer zero sequence impedance is purely reactive and equal to X
For the purposes of this assignment the 66 kV source can be assumed to be perfect
FMVA
MVA RMVA
MVA MVA1
MVA X
(%) Zf+
ohm
Zf0
ohm
Zr+
ohm Zr0
ohm 1.5 0.5 12 4 3.6+j3.6 3.6+j7.2 4.2+j4.2 4.2+j8.4
Extra notes for the aasignment:
Assume transformer zero sequence impedance is purely reactive and equal to X
For the purposes of this assignment the 66 kV source can be assumed to be perfect
FMVA
MVA RMVA
MVA MVA1
MVA X
(%) Zf+
ohm
Zf0
ohm
Zr+
ohm Zr0
ohm 1.5 0.5 12 4 3.6+j3.6 3.6+j7.2 4.2+j4.2 4.2+j8.4
Extra notes for the aasignment:
MVA rating;
X = pu …





