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Diffstat (limited to '3872/CH10/EX10.10/EX10_10.sce')
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diff --git a/3872/CH10/EX10.10/EX10_10.sce b/3872/CH10/EX10.10/EX10_10.sce new file mode 100644 index 000000000..1e6891a82 --- /dev/null +++ b/3872/CH10/EX10.10/EX10_10.sce @@ -0,0 +1,31 @@ +//Book - Power System: Analysis & Design 5th Edition
+//Authors - J. Duncan Glover, Mulukutla S. Sarma, and Thomas J. Overbye
+//Chapter - 10 ; Example 10.10
+//Scilab Version - 6.0.0 ; OS - Windows
+
+clc;
+clear;
+
+Srated = 30; //power rating in MVA
+Vprtr = 34.5; //primary side of transformer voltage in kV
+Vsectr = 138; //secondary side of transformer voltage in kV
+IArated = (Srated*10^6)/(sqrt(3)*Vsectr*10^3); //Rated current on the 138-kV side of the transformer in Amperes
+CTratiosec = 150/5; //CT ratio on the 138-kV side
+IA = IArated/CTratiosec; //differential current in 138kV side in Amperes
+Iarated = (Srated*10^6)/(sqrt(3)*Vprtr*10^3); //Rated current on the 34.5-kV side of the transformer in Amperes
+CTratiopr = 500/5; //CT ratio on the 34.5-kV side
+Ia = Iarated/CTratiopr; //differential current in 138kV side in Amperes
+Iab = Ia*sqrt(3); //diffrential current in lefthand re-straining winding of figure 10.37 in Amperes
+crtratio = Iab/IA; //ratio of the currents in the left- to righthand restraining winding
+TA = 5;
+Tab = 10;
+tapratio = Tab/TA; //closest relay tap ratio
+%mismatch = (((Iab/Tab)-(IA/TA))/(Iab/Tab))*100; //percentage mismatch for tap setting
+printf('\nRated current on the 138kV side of the transformer is %f A',IArated);
+printf('\nRated current on CT ratio in 138 kV side of the transformer is %f A',IA);
+printf('\nRated current on the 34.5kV side of the transformer is %f A',Iarated);
+printf('\nRated current on CT ratio in 34.5kV side of the transformer is %f A',Ia);
+printf('\nThe percentage mismatch for the tap setting is %f',%mismatch);
+
+
+
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