电缆金属护套环流

电力三兄弟

ES2=2*w*I*10^(-7)*(sqrt(3)/2*log(m*S/GMRs)-j*1/2*log(S/m/GMRs));
" n6 v% ^" t" B, ^4 }ES3=2*w*I*10^(-7)*(-sqrt(3)/2*log(m*S/GMRs)-j*1/2*log(n*n*S/m/GMRs));
% R4 u- |0 q) Q' B7 w/ Q7 z
E1=ES1*L1+ES2*L2+ES3*L3;
E2=ES1*L3+ES2*L1+ES3*L2;
5 X) H7 Z4 n* {1 b0 V& d9 ~E3=ES1*L2+ES2*L3+ES3*L1;
) M! M, R- T  s6 iE1r=real(E1);E1f=imag(E1);
E2r=real(E2);E2f=imag(E2);
$ T$ t  n* b  v9 f) }; FE3r=real(E3);E3f=imag(E3);%线芯电流引起的感应电势

XP=X1*L1+X1*L2+X2*L3;
& ^' M3 X4 h: eXQ=X2*L1+X1*L2+X1*L3;
. ]. C; E8 `" c) e; O. P5 rXR=X1*L1+X2*L2+X1*L3;
+ Y/ Q1 |2 n8 k! MZZ=zeros(6,6);%系数矩阵
ZZ(1,1)=RA;ZZ(1,2)=RB;ZZ(1,3)=RB;ZZ(1,4)=-X;ZZ(1,5)=-XP;ZZ(1,6)=-XQ;
/ V& K7 ~1 V# {. Z  kZZ(2,1)=RB;ZZ(2,2)=RA;ZZ(2,3)=RB;ZZ(2,4)=-X1;ZZ(2,5)=-X;ZZ(2,6)=-XR;
/ H( w2 H. @( s3 XZZ(3,1)=RB;ZZ(3,2)=RB;ZZ(3,3)=RA;ZZ(3,4)=-XQ;ZZ(3,5)=-XR;ZZ(3,6)=-X;
ZZ(4,1)=X;ZZ(4,2)=XP;ZZ(4,3)=XQ;ZZ(4,4)=RA;ZZ(4,5)=RB;ZZ(4,6)=RB;
2 Z) q$ k5 h8 JZZ(5,1)=XP;ZZ(5,2)=X;ZZ(5,3)=XR;ZZ(5,4)=RB;ZZ(5,5)=RA;ZZ(5,6)=RB;
$ [2 r! N* ]- q/ {0 YZZ(6,1)=XQ;ZZ(6,2)=XR;ZZ(6,3)=X;ZZ(6,4)=RB;ZZ(6,5)=RB;ZZ(6,6)=RA;

) P, v6 y0 t3 r# E1 nE=[E1r;E2r;E3r;E1f;E2f;E3f;];
0 O/ L7 G# p- H, l- X$ w$ ]II=inv(ZZ)*E;
IS1=II(1,1)+j*II(4,1);
, Q- N- N' c- s  g# l& MIS2=II(2,1)+j*II(5,1);
IS3=II(3,1)+j*II(6,1);
8 @5 V6 N0 k. g$ BIS4=IS1+IS2+IS3;

3 G! Z; Z  G1 P" I2 w# ]abs(IS1)
abs(IS2)
" G: v" m3 `% e5 C. ?7 t# uabs(IS3)
9 E  s5 R3 y3 wabs(IS4)
& _* a4 H" \5 V