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//Electric Power Generation, Transmission and Distribution by S.N.Singh
//Publisher:PHI Learning Private Limited
//Year: 2012 ; Edition - 2
//Example 13.3
//Scilab Version : 6.0.0 ; OS : Windows
clc;
clear;
A=120; //Normal copper area in mm^2
con_size=(30+7)/6.30; //Conductor size in mm
w=0.4; //Conductor weight in kg/m
Ts=1250; //Tensile strength in kg
Sf=5; //Safety factor
L=200; //Span length in m
t=0.5; //Thickness of ice in cm
p=10; //Wind pressure in kg/m^2
D=(2*4-1)*6.30*10^(-1); //Total diameter of conductor in cm
T=Ts/Sf; //Working stress in kg
d=w*L^(2)/(8*T); //Sag in still air in m
wi=%pi*((D+t)*10^(-2)*t*10^(-2))*915; //Weight of ice in kg/m
W=w+wi; //Total weight of ice in kg/m
d1=W*L^(2)/(8*T); //Sag in m
Ww=(D+2*t)*10^(-2)*p; //Wind loading in kg/m
We=sqrt(Ww^(2)+(w+wi)^(2)) //Effective loading in kg/m
d2=We*L^(2)/(8*T); //Total Sag in m
angle=atand(Ww/(w+wi)); //Sag angle in degree
printf("\nSag in still air %.f m",d);
printf("\nSag,if the conductor is covered with ice of 0.5-cm thickness is % .2f m",d1);
printf("\nSag,if the conductor is covered with ice of 0.5-cm thickness and a wind pressure of 10 kg/m^(2) is acting on the projected area is %.2f m",d2);
printf("\nSag angle is %.2f degree",angle);
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