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| author | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
|---|---|---|
| committer | prashantsinalkar | 2017-10-10 12:27:19 +0530 |
| commit | 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 (patch) | |
| tree | dbb9e3ddb5fc829e7c5c7e6be99b2c4ba356132c /3872/CH8/EX8.9/EX8_9.sce | |
| parent | b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b (diff) | |
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initial commit / add all books
Diffstat (limited to '3872/CH8/EX8.9/EX8_9.sce')
| -rw-r--r-- | 3872/CH8/EX8.9/EX8_9.sce | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/3872/CH8/EX8.9/EX8_9.sce b/3872/CH8/EX8.9/EX8_9.sce new file mode 100644 index 000000000..7f21a866a --- /dev/null +++ b/3872/CH8/EX8.9/EX8_9.sce @@ -0,0 +1,42 @@ +//Book - Power System: Analysis & Design 5th Edition
+//Authors - J. Duncan Glover, Mulukutla S. Sarma, and Thomas J. Overbye
+//Chapter - 8 ; Example 8.8
+//Scilab Version - 6.0.0 ; OS - Windows
+
+clc;
+clear;
+
+Vp = [277; 260*(cos(-120*%pi/180)+%i*sin(-120*%pi/180)); 295*(cos(115*%pi/180)+%i*sin(115*%pi/180))]; //given column vector of phase voltage in volts
+Zl1 = 0.087+%i*(0.99); //impedace of line 1 in ohm
+Zdel = 22.98+%i*(19.281); //impedance of the delta load in ohm
+Zl2 = 0.087+%i*(0.99); //impedance of line 2 in ohm
+function [Vp1]=phaseshift(x1,x2)
+ [r theta]=polar(x1);
+ Vp1=r*(cos(theta+x2*%pi/180)+%i*sin(theta+x2*%pi/180));
+endfunction
+
+V0 = (Vp(1,1)+Vp(2,1)+Vp(3,1))/3; //zero sequence voltage in V
+V1 = (Vp(1,1)+phaseshift(Vp(2,1),120)+phaseshift(Vp(3,1),240))/3; //positive sequence voltage in V
+V2 = (Vp(1,1)+phaseshift(Vp(2,1),240)+phaseshift(Vp(3,1),120))/3; //negative sequence voltage in V
+I0 = 0; //zero sequence current in A
+I1 = V1/(Zl1+(Zdel/3)); //positive sequence current in A
+I2 = V2/(Zl2+(Zdel/3)); //negative sequence current in A
+Ia = I0+I1+I2; //zero source current in A
+Ib = I0+phaseshift(I1,240)+phaseshift(I2,120); //positive source current in A
+Ic = I0+phaseshift(I1,120)+phaseshift(I2,240); //negative source current in A
+Sp = (Vp(1,1)*(conj(Ia)))+(Vp(2,1)*(conj(Ib)))+(Vp(3,1)*(conj(Ic))); //total complex power delivered to load in VA
+Ss = (V0*conj(I0))+(V1*conj(I1))+(V2*conj(I2)); //total complex power delivered to the sequence networks in VA
+SS = 3*Ss;
+printf('\n 3Ss = %0.2f , Sp = %0.2f ',abs(SS), abs(Sp));
+if (ceil(real(SS))==ceil(real(Sp))) then
+ printf('\n Sp is equal to 3Ss');
+else
+ printf('\n Sp is not equal to 3Ss');
+end
+
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