blob: f2c51ad1b6d24d46903322f421781afe018620ed (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
|
// 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 2: CONSTANTS OF OVERHEAD TRANSMISSION LINES
// EXAMPLE : 2.13 :
// Page number 110
clear ; clc ; close ; // Clear the work space and console
// Given data
D_a_a = 0.9 // Self GMD of conductor a(cm)
D_a_aa = 40.0 // Distance between conductor a & a'(cm)
D_a_b = 1000.0 // Distance between conductor a & b(cm)
D_a_bb = 1040.0 // Distance between conductor a & b'(cm)
D_aa_b = 960.0 // Distance between conductor a' & b(cm)
D_c_a = 2000.0 // Distance between conductor a & c(cm)
D_c_aa = 1960.0 // Distance between conductor a' & c(cm)
D_cc_a = 2040.0 // Distance between conductor a & c'(cm)
// Calculations
D_aa_aa = D_a_a // Self GMD of conductor a'(cm)
D_aa_a = D_a_aa // Distance between conductor a' & a(cm)
D_s1 = (D_a_a*D_a_aa*D_aa_aa*D_aa_a)**(1.0/4) // Self GMD in position 1(cm)
D_s2 = D_s1 // Self GMD in position 2(cm)
D_s3 = D_s1 // Self GMD in position 3(cm)
D_s = (D_s1*D_s2*D_s3)**(1.0/3) // Equivalent self GMD(cm)
D_aa_bb = D_a_b // Distance between conductor a' & b'(cm)
D_AB = (D_a_b*D_a_bb*D_aa_b*D_aa_bb)**(1.0/4) // Mutual GMD(cm)
D_BC = D_AB // Mutual GMD(cm)
D_cc_aa = D_c_a // Distance between conductor a' & c'(cm)
D_CA = (D_c_a*D_c_aa*D_cc_a*D_cc_aa)**(1.0/4) // Mutual GMD(cm)
D_m = (D_AB*D_BC*D_CA)**(1.0/3) // Equivalent Mutual GMD(cm)
L = 0.2*log(D_m/D_s) // Inductance per phase(mH/km)
// Results
disp("PART II - EXAMPLE : 2.13 : SOLUTION :-")
printf("\nInductance per phase, L = %.3f mH/km", L)
|
