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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 /416/CH14/EX14.16/example14_16pp.sce | |
| 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 '416/CH14/EX14.16/example14_16pp.sce')
| -rwxr-xr-x | 416/CH14/EX14.16/example14_16pp.sce | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/416/CH14/EX14.16/example14_16pp.sce b/416/CH14/EX14.16/example14_16pp.sce new file mode 100755 index 000000000..cd9e6750e --- /dev/null +++ b/416/CH14/EX14.16/example14_16pp.sce @@ -0,0 +1,28 @@ +clc
+clear
+disp('example 14.16')
+vp=132;vs=33;vt=11 //voltage at primary ,secondary ,teritiory
+pp=75;ps=50;pt=25 //MVA rating at prinary ,secondary,teritiory
+rpr=0.12;rv=132;rp=75 //reactance power of primary under rv and rp as voltage and power base
+poa=60;rea=50 //load real and reactive power a
+pva=125;svaa=33 //primary and secondary voltage a
+svsb=25;pvb=140;svbb=33 //primary and secondary voltage at no load
+disp('(a)')
+vbas=132 ;mvabas=75 //assume voltage and MVA base
+v1pu=pva/vbas //voltage in per unit
+v1apu=round(v1pu*1000)/1000 //rounding off
+qre=rea/mvabas //reactive power in per unit
+vn1a=(v1apu+sqrt(v1apu^2-4*rpr*qre))/2 //voltage using quadratic equation formulae
+vn2a=(v1apu-sqrt(v1apu^2-4*rpr*qre))/2
+vnaa=vn1a*vbas
+v12=pvb/vbas
+q=svsb/mvabas
+vn1b=(v12+sqrt(v12^2-4*rpr*q))/2 //voltage using quadratic equation formulae
+vn1b=round(vn1b*1000)/1000
+vnbb=vn1b*vbas //vn in no load condition
+printf("vn=%.3f.p.u \n vn=%.3fkV",vn1a,vnaa)
+disp('(b)')
+printf("vn=%.3f.p.u \n vn=%.3fkV",vn1b,vnbb)
+z=vnaa/svaa;x=vnbb/svbb;
+printf("\n transformation ratio under load condition %.3f \n transformation ratio under no load condition %.3f \n the actual ratio can be taken as mean of the above value i.e.%.3fpercent\n varying by (+/-)%.3fpercent",z,x,(z+x)/2,x-(z+x)/2)
+
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