From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 2078/CH5/EX5.10/Example5_10.sce | 33 +++++++++++++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100755 2078/CH5/EX5.10/Example5_10.sce

(limited to '2078/CH5/EX5.10')

diff --git a/2078/CH5/EX5.10/Example5_10.sce b/2078/CH5/EX5.10/Example5_10.sce
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+//Exa 5.10
+clc;
+clear;
+close;
+//Given data :
+l=200;//km
+P=50;//MVA
+VRL=132*10^3;//Volt
+f=50;//Hz
+R=l*0.15;//ohm
+X=l*0.50;//ohm
+Y=l*2*10^-6;//mho
+pf=0.85;//power factor
+cos_fi_r=pf;
+sin_fi_r=sqrt(1-cos_fi_r^2);
+VR=VRL/sqrt(3);//Volt
+IR=P*10^6/(sqrt(3)*VRL);//A
+Z=R+%i*X;//ohm
+IR=IR*(cos_fi_r-%i*sin_fi_r);//A
+Vdash=VR+1/2*IR*Z;//Volt
+IC=Vdash*%i*Y;//A
+IS=IR+IC;//A
+disp("Sending end current(A), magnitude is "+string(abs(IS))+" and angle in degree is "+string(atand(imag(IS),real(IS))));
+VS=Vdash+1/2*IS*Z;//Volt
+VSL=abs(VS)*sqrt(3);//Volt
+disp(VSL/1000,"Sending end line voltage(kV) :");
+Reg=(VSL-VRL)/VRL*100;//%
+disp(Reg,"Regulation(%) :  ");
+fi_s=atand(imag(VS),real(VS))-atand(imag(IS),real(IS));//
+cos_fi_s=cosd(fi_s);//sending end pf
+Eta_T=sqrt(3)*VRL*abs(IR)*cos_fi_r/(sqrt(3)*VSL*abs(IS)*cos_fi_s)*100;//%
+disp(Eta_T,"Transmission Efficiency(%) : ");
+//Ans is wrong in the book.Angle of VS is calculated wrong leads to wrong answers.
-- 
cgit