diff options
Diffstat (limited to '3760/CH1/EX1.44')
| -rw-r--r-- | 3760/CH1/EX1.44/Ex1_44.sce | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/3760/CH1/EX1.44/Ex1_44.sce b/3760/CH1/EX1.44/Ex1_44.sce new file mode 100644 index 000000000..7d3c13848 --- /dev/null +++ b/3760/CH1/EX1.44/Ex1_44.sce @@ -0,0 +1,31 @@ +clc;
+P=100000; // VA rating of two winding transformer
+E1=2000; // rated voltage of h v side
+E2=200; // rated voltage of l v side
+l=2.5; // percentage of loss in two winding transformer
+vr=3; // percentage of voltage regulation in two winding transformer
+z=4; // percentage of leakage impedance in two winding transformer
+ih=P/E1; // full load current of h v side
+il=P/E2; // full load current of l v side
+V1=E1; // rated voltage on l v side of autotransformer
+V2=E1+E2; // rated voltage on h v side of autotransformer
+Il=il+ih; // rated current on l v side of autotransformer
+printf('Rated voltage on l v and h v side of autotransformer are %f v and %f v respectively\n,',V1,V2);
+printf('Rated current on h v and l v side of autotransformer are %f A and %f A respectively\n,',il,Il);
+k=E1/V2; // turns ratio for auto transformer
+K=((1/(1-k))*P)/1000;
+printf('Rated KVA of autotransformer is %f KVA\n',K);
+pl=(1-k)*l; //percent full load losses in autotransformer
+n=100-pl;
+printf('Efficiency of auto transformer is %f percent\n',n);
+Z=(1-k)*z;
+printf('Percentage impedance as an auto transformer is %f \n',Z);
+VR=(1-k)*vr;
+printf('percentage voltage regulation as an auto transformer is %f \n',VR);
+Is=(1/(1-k))*(100/z); // short circuit p u current
+Ish=(Is*il)/1000;
+printf('Short circuit of auto transformer on h v side is %f KA \n',Ish);
+Isl=(Is*Il)/1000;
+printf('Short circuit of auto transformer on l v side is %f KA \n',Isl);
+
+
|