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// A Texbook on POWER SYSTEM ENGINEERING
// A.Chakrabarti, M.L.Soni, P.V.Gupta, U.S.Bhatnagar
// DHANPAT RAI & Co.
// SECOND EDITION
// PART II : TRANSMISSION AND DISTRIBUTION
// CHAPTER 8: CORONA
// EXAMPLE : 8.3 :
// Page number 228
clear ; clc ; close ; // Clear the work space and console
// Given data
V = 132.0 // Operating line voltage(kV)
f = 50.0 // Frequency(Hz)
d = 1.17 // Diameter of conductor(cm)
D = 300.0 // Distance b/w conductor(cm)
m = 0.96 // Irregularity factor
b = 72.0 // Barometric pressure(cm)
t = 20.0 // Temperature(°C)
// Calculations
delta = 3.92*b/(273.0+t) // Air density factor
r = d/2.0 // Radius of conductor(cm)
E_0 = 21.1*m*delta*r*log(D/r) // Critical disruptive voltage for fair weather condition(kV/phase)
E_0_foul = 0.8*E_0 // Critical disruptive voltage for foul weather(kV/phase)
E = V/3**0.5 // Phase voltage(kV)
P_fair = 244.0*10**-5*(f+25)/delta*(r/D)**0.5*(E-E_0)**2 // Corona loss for fair weather condition(kW/km/phase)
P_foul = 244.0*10**-5*(f+25)/delta*(r/D)**0.5*(E-E_0_foul)**2 // Corona loss for foul weather condition(kW/km/phase)
// Results
disp("PART II - EXAMPLE : 8.3 : SOLUTION :-")
printf("\nCorona loss in fair weather, P = %.3f kW/km/phase", P_fair)
printf("\nCorona loss in foul weather, P = %.3f kW/km/phase", P_foul)
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