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用MODELS计算线路感应电压:程序如下:, a* H2 p- K- P# d7 f4 r7 c
MODEL indloss% N& P. `4 m* E( J
CONST : P& A& S% M% k" @9 n3 Z- X
Tmax {VAL:500} 8 y: ]* h3 Y, t N& Q, ~- ?3 z
n {VAL:2}- Q/ |; j- ~0 Q7 B8 \3 B. g( `# s
c {VAL:3.e8}
/ C9 c/ m8 F* y% v3 B I0 {VAL:1}
9 u5 @8 C9 A% A" V0 n, z. P, V eps0 {val:8.85e-12}
( _! U4 D; O y+ s INPUT UAP[0...n],UBP[0...n]
! [$ ], X4 F* _: t DATA Y,XA,XB
' E! f7 N0 {2 }$ l$ o. d9 { z[1...n] {DFLT:10} 3 L: P: ]8 V6 U/ K o9 z2 q
Im {DFLT:3e4}
1 ~0 ~5 m3 K( [* W3 |' Z. E" E tc {DFLT:5e-5} / C$ B1 T: L, ]
th {DFLT:2e-6}
8 K* w3 S. d+ e4 | v {DFLT:1.5e8}
$ ~% T3 h1 m) R6 j1 W a5 u& o" a sigma {DFLT:0.001} 4 U* n: U% C3 F
epsr {DFLT:10}
: B) p1 q9 p L; s OUTPUT UrA[0...n],UrB[0...n]
" S0 c. T4 B$ |. C VAR UindA0[0...Tmax],UindB0[0...Tmax],g1[0...Tmax],g2[0...Tmax],
5 s6 H2 q. D M% K8 F# F UindAD[0...Tmax],UindBD[0...Tmax],Ui0,UiD,
) P% g, N1 {3 Z! W. [ UrA[0...n],UrB[0...n],Tr,k,i,AB,dt,uk[1..4],
% R8 L1 n6 w. B) ] b,L,x,tau,a1,b1,c1,c2,c3
. Q2 ]3 n/ X% j8 r7 r% Y7 x+ [ FUNCTION F0(x,tr):= (c*tr-x)/(y*y+(b*(c*tr-x))**2)
- y; S. j$ P d% [4 q0 U1 }! B9 s1 i FUNCTION F1(x,tr):= (x+b*b*(c*tr-x))/sqrt((v*tr)**2+(1-b*b)*(x*x+y*y))
1 {9 A# C# F3 ?" k7 j! a FUNCTION F2(x,tr):= x+b*b*(c*tr-x)+sqrt((v*tr)**2+(1-b*b)*(x*x+y*y))5 I0 v% P1 g( m
FUNCTION F3(x,tr):= (v*tr+sqrt((v*tr)**2+(1-b*b)*(x*x+y*y)))/sqrt(x*x+y*y)
% ^' |# J( ^/ @0 A FUNCTION t0(x):= sqrt(x*x+y*y)/c0 b0 k/ |; l$ V0 \" p
HISTORY
* @" X# Y+ H9 E: q% m7 c; r UrA[1...n] {dflt:0}
$ u0 w9 h' g7 S; y! e* v& W4 A UrB[1...n] {dflt:0}' _/ n5 x& M& l/ N3 f8 ~: H8 U
UAP[1...n] {dflt:0}
7 Y0 t7 A: s# i- R, J UBP[1...n] {dflt:0}
& C4 x2 [* ]9 ?8 y* A8 |% ~3 f DELAY CELLS DFLT: (XA-XB)/(c*timestep)+1
# A* {; Z) ~% e INIT
* _1 p7 ^5 B7 n+ g1 t: d* O k:=sqrt(eps0*epsr/(PI*sigma*dt))' Q2 x% V* Q9 K5 V6 @) M. ?0 I& M
dt:= timestep b:=v/c L:=XA-XB tau:=L/c: W% }4 l7 c! r Y
a1:=Im/(I0*th)/ n1 Z$ r& |" g/ ]: p, l4 ~
b1:=0.5*th/(tc-th)+1
]5 w- |7 X" _' W8 p: ]3 Q c1:=a1*k*dt/sqrt(epsr)& e: C6 u6 L+ h6 ^/ P
c2:=-1.073*k+0.2153*(k**3)+4/3
: V. F1 h3 G/ y$ X c3:=-0.2153*(k**3)+1/6
@6 L1 {4 G/ @& Z5 r9 K FOR AB:=1 TO 2 DO" U$ M6 _5 d! Q5 p# c" w* ^4 _
if AB=1 then' E- h0 f% s' C7 i7 q. f- N# P! H
x:=XA else x:=-XB
3 q% h' B7 A& { G) q endif
1 I `2 Z& b- N5 _8 f0 A2 A* G FOR i:=0 TO Tmax DO; ^% `- g) i/ n5 J
Tr:=i*dt! e ^4 \1 r; H2 y* T6 r4 }# {
if Tr>t0(x)
! O# V+ u! |9 Q' m0 l3 C W then
5 C6 h+ V/ a1 }- m0 q if Tr>t0(x-L)+tau8 X* ~" i1 @% S3 Q3 N1 w3 n
then/ \/ t$ s, M q
Ui0:=f0(x,Tr)*(f1(x,Tr)-f1(x-L,Tr-tau)): W3 O; p/ `: H6 M' Q L
UiD:=ln( f2(x,Tr)/f2(x-L,Tr-tau) )-1/b*ln( f3(x,Tr)/f3(x-L,Tr-tau) )
0 Q: I) T$ q/ ~# _ else- I, R8 @1 k$ \* P) q1 _- n. H) [0 y
Ui0:=f0(x,Tr)*(f1(x,Tr)+1)
2 j7 k+ [! Q6 I- i' N: S. H5 J: o UiD:=ln( f2(x,Tr)*f0(x,Tr) )-1/b*ln( f3(x,Tr)/(1+b) )2 ^8 [" c# o q3 g% d% l- C
endif3 Z: S, |9 R- a
else! o2 c$ D2 g' j% \3 W3 s; {& b
Ui0:=0, UiD:=0# y- D2 ]2 I# _5 E2 j7 E" `% Q
endif Z; n. ^( q9 ^
if AB=1 then
# f6 v9 V- `2 O UindA0[i]:=Ui0+ B1 o: S8 c# O! P" n
UindAD[i]:=UiD; s- w: H/ G4 j2 } {$ K7 `
g1[i]:=a1*dt) [, v* |8 p0 @" O
if i>08 z: C5 b/ N- A, S5 \
then
9 z( q3 A, z: e g2[i]:=a1*sqrt(eps0/(PI*sigma*Tr))*dt* s( g: Q* k4 i8 V: p- T, B
endif
8 R w! ~& q( H& Q' u else
& y2 u) B6 R, q. h: l! f UindB0[i]:=Ui0
D: B4 \* c( B) O( c; f/ H+ D UindBD[i]:=UiD* n' t \; W8 d0 C- ]% \
endif* q; O2 M- G" M& Y
ENDFOR5 v+ G5 o+ x. T: j s9 d
ENDFOR
/ M3 e" Q+ q9 i' r7 d! ~ i:=Tmax$ T7 u4 s/ J! w5 h+ Q: G
WHILE i>1 DO
7 C# }+ w" ]7 j1 O uk[1...4]:=0
4 ^2 w$ ^+ t* c: z0 M# r* m FOR Tr:=1 TO i-1 DO: W, H; r# P, Q) ?6 k
uk[1]:=uk[1]+UindA0[Tr]*g1[i-Tr]) j2 m( N: x( X# e- ^. E( X7 f
uk[2]:=uk[2]+UindB0[Tr]*g1[i-Tr]
2 T; E( Y* z( v " b9 d. a9 V* Y3 n1 g
uk[3]:=uk[3]+UindAD[Tr]*g2[i-Tr]( I2 p+ j, C' v8 V# j
R7 M! w; U% x7 t4 Q uk[4]:=uk[4]+UindBD[Tr]*g2[i-Tr] G1 G6 i8 B3 ]8 D7 F9 h( L
. k' E0 P$ A& g, Q9 D- g& Z2 j ENDFOR
/ }. t$ l; l9 b( m" n UindA0[i]:=uk[1]+0.5*UindA0[i]*g1[0]0 k% t; ^3 y: Y: [8 u5 M) Q
UindB0[i]:=uk[2]+0.5*UindB0[i]*g1[0]
! p! V, R( @" K. N, }: k o! d UindAD[i]:=uk[3]+(UindAD[i]*c2+UindAD[i-1]*c3)*c1
9 k1 J1 N8 ]! I UindBD[i]:=uk[4]+(UindBD[i]*c2+UindBD[i-1]*c3)*c1 @7 N- c( e* z# p, H3 [$ ~6 i
i:=i-1; A# G6 G1 L2 M* c
ENDWHILE
* q p6 _& P5 @1 B* n- |7 B$ U Tr:=trunc(th/dt)) n- W1 |- ~ ]
7 A9 D9 h, U1 d1 c, y0 Q FOR i:=Tmax TO Tr BY -1 DO2 N( S$ h- F3 ?5 Y# F; n
UindA0[i]:=UindA0[i]-b1*UindA0[i-Tr]( z, A2 ?6 E" y7 n, _3 ?" B2 `
UindB0[i]:=UindB0[i]-b1*UindB0[i-Tr], S$ r/ N) c, L/ |( V6 Q$ F- C2 ^( U
UindAD[i]:=UindAD[i]-b1*UindAD[i-Tr]
5 y$ m9 K! j/ J7 C1 p9 s UindBD[i]:=UindBD[i]-b1*UindBD[i-Tr]
7 g4 v1 f8 ]1 e( R. {% U endif
& h0 w' a$ S2 _ ENDFOR3 s6 N. s. b% @7 P$ Y5 c7 [2 W
ENDINIT& r6 K; o: u( K* \1 [+ Z8 K
EXEC
4 _' y$ |8 R9 g K3 M. y& Q. U1 G FOR i:=1 to n DO
: a: `* U* y: J& |2 ~7 M UrA[i]:=60*I0*b*(z[i]*UindA0[t/dt] - UindAD[t/dt]) +2*delay(UBP[i],tau-dt,1)-delay(UrB[i],tau,1) S3 Y! ~- G- D& l f
UrB[i]:=60*I0*b*(z[i]*UindB0[t/dt] - UindBD[t/dt]) +2*delay(UAP[i],tau-dt,1)-delay(UrA[i],tau,1)& m2 E; n% T- U) u. j
ENDFOR
) x) [' n, p6 C8 e ENDEXEC
3 ^8 v1 _* \& G. ~ ENDMODEL: M6 x( l$ B# w
% v9 F9 ?( n7 y 程序报错如下7 Y* f% x$ t" i
KILL = 422. The present statement is interpreted as a value assignment statement, and the preceding name is interpreted as a
/ W, Y6 G6 i( `! U U5 x/ s, G variable to which a value is being assigned. The identification of this variable is interpreted as complete, and should now be* Y; m7 C- V! V+ ]) h) I/ O
followed by ":=", in the following format:
0 }4 [8 M7 l7 D. X- F3 K9 D variable_identification := expression/ p# q7 R- ?6 S* ]9 [
; u% D7 i2 ?; n9 [" p; X 本人已经仔细检查了每个等式都加:=了,不知道为什么还是不行,有兴趣的可以仿真一下,大家交流交流。 z7 Z0 t$ j; v2 Y1 {
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