From 7f60ea012dd2524dae921a2a35adbf7ef21f2bb6 Mon Sep 17 00:00:00 2001
From: prashantsinalkar
Date: Tue, 10 Oct 2017 12:27:19 +0530
Subject: initial commit / add all books

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+//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);
+
+
+
-- 
cgit