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| author | priyanka | 2015-06-24 15:03:17 +0530 |
|---|---|---|
| committer | priyanka | 2015-06-24 15:03:17 +0530 |
| commit | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (patch) | |
| tree | ab291cffc65280e58ac82470ba63fbcca7805165 /503/CH3/EX3.21/ch3_21.sci | |
| download | Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.gz Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.tar.bz2 Scilab-TBC-Uploads-b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b.zip | |
initial commit / add all books
Diffstat (limited to '503/CH3/EX3.21/ch3_21.sci')
| -rwxr-xr-x | 503/CH3/EX3.21/ch3_21.sci | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/503/CH3/EX3.21/ch3_21.sci b/503/CH3/EX3.21/ch3_21.sci new file mode 100755 index 000000000..252172e75 --- /dev/null +++ b/503/CH3/EX3.21/ch3_21.sci @@ -0,0 +1,23 @@ +// to calculate fault currentin feeder lines,primary and secondary lines of receiving end transformers
+
+clc;
+
+r=60; //kva rating of 3-ph common base
+s=200; //kva rating of 3ph transformer
+//sending end
+X_Tse=.06*r/s; //.06= reactance of transformer based on its own rating
+//in 2 kv feeder
+V_B=2000/sqrt(3); //line to neutral
+I_B=r*1000/(sqrt(3)*2000);
+Z_B=V_B/I_B;
+X_feeder=0.7/Z_B; //feeder reactance=0.7
+//receiving end
+X_Tre=0.0051;
+X_tot=X_Tse+X_feeder+X_Tre;
+V_se=20/20;
+I_fc=V_se/X_tot; //feeder current
+
+I_f=I_fc*I_B; disp(I_f,'current in 2kv feeder(A)');
+I_t1=I_f/sqrt(3); disp(I_t1,'current in 2kv winding of transformer(A)');
+I_t2=I_t1*10; disp(I_t2,'current in 200kv winding of transformer(A)');
+I_l=I_t2*sqrt(3); disp(I_l,'current at load terminals(A)');
\ No newline at end of file |