用MODELS计算线路感应电压:程序如下:% O; o# x3 D) X
MODEL indloss ! H4 S: u0 \2 O/ O/ ` s9 kCONST M9 L+ h% [/ m0 h1 Q) n3 o# \
Tmax {VAL:500} ' C d/ ^# @$ e5 U8 Q1 s2 v
n {VAL:2} 4 u& @ p! Z J* Bc {VAL:3.e8} 2 N; V2 Z5 p: M
I0 {VAL:1} . w2 O) M& z0 a& l; i4 f meps0 {val:8.85e-12}( s# ?3 g4 V/ ^) [; T
INPUT UAP[0...n],UBP[0...n] ' ^ c" H# o: ?2 o. wDATA Y,XA,XB5 {. a- Q9 b5 F3 k8 q; ~" g
z[1...n] {DFLT:10} 7 y3 N7 d& Y4 f/ _# H( JIm {DFLT:3e4} w/ M: G$ m/ Dtc {DFLT:5e-5} : {4 H7 W* m# z4 u6 z" Zth {DFLT:2e-6} $ \/ }, e |: o" Y1 Q5 i Zv {DFLT:1.5e8} ' O' s* U( z! i7 p) x# Q" D; f
sigma {DFLT:0.001} ( @6 p7 x3 d S1 `: U- o
epsr {DFLT:10} ( k3 z6 _7 {. ^: B- l! K
OUTPUT UrA[0...n],UrB[0...n]5 x7 H9 d% I8 d2 m* }- d
VAR UindA0[0...Tmax],UindB0[0...Tmax],g1[0...Tmax],g2[0...Tmax], 0 U9 Q' S5 T5 j" n) N) e NUindAD[0...Tmax],UindBD[0...Tmax],Ui0,UiD, & w5 }2 c- m2 o0 _; G7 gUrA[0...n],UrB[0...n],Tr,k,i,AB,dt,uk[1..4], . m9 F! q! C% c% V& ~b,L,x,tau,a1,b1,c1,c2,c35 I" {. c9 S) s5 k
FUNCTION F0(x,tr):= (c*tr-x)/(y*y+(b*(c*tr-x))**2) / ^2 _3 Y$ B7 m' E6 c9 g9 jFUNCTION F1(x,tr):= (x+b*b*(c*tr-x))/sqrt((v*tr)**2+(1-b*b)*(x*x+y*y)): R/ C) i. R4 L! [9 G* \
FUNCTION F2(x,tr):= x+b*b*(c*tr-x)+sqrt((v*tr)**2+(1-b*b)*(x*x+y*y))# d5 l; l4 x$ p- \' ]' ?$ S
FUNCTION F3(x,tr):= (v*tr+sqrt((v*tr)**2+(1-b*b)*(x*x+y*y)))/sqrt(x*x+y*y); x4 k; B4 t2 Z- _+ o; x
FUNCTION t0(x):= sqrt(x*x+y*y)/c & |/ }" x/ L" @! ~HISTORY1 K" c( Q1 _1 m4 x" m0 b) V+ W( ^
UrA[1...n] {dflt:0} $ ?$ M0 g3 w0 F2 _UrB[1...n] {dflt:0}* }4 A" i: p) ^7 d7 a' Y
UAP[1...n] {dflt:0}) f0 ?! B6 c% h/ X
UBP[1...n] {dflt:0} Y5 k3 h7 y+ F
DELAY CELLS DFLT: (XA-XB)/(c*timestep)+1; x0 Z. Y8 M0 m! ?0 V7 V) `
INIT( }& _. N. H, l/ _
k:=sqrt(eps0*epsr/(PI*sigma*dt))3 t3 n7 M8 q( U1 m( K; F5 R. M& J
dt:= timestep b:=v/c L:=XA-XB tau:=L/c , U& ~) X/ \ M: Q5 n8 la1:=Im/(I0*th) & l$ m+ g" h; q% ?( Gb1:=0.5*th/(tc-th)+1 % S( I- S* G5 Y8 v4 ]. ac1:=a1*k*dt/sqrt(epsr) 8 W% p* T. O, T; K9 c7 H2 Z- uc2:=-1.073*k+0.2153*(k**3)+4/39 q: v- p4 t2 f, N
c3:=-0.2153*(k**3)+1/6 ! {' c7 |& i% k FOR AB:=1 TO 2 DO 1 x: V4 q" ^ {! ]if AB=1 then ! n- g/ Q- {6 q% Z2 \x:=XA else x:=-XB k0 @" | ^0 l$ T& K/ j* _) \
endif& S5 i) \2 t6 e% H; ~7 l. \3 a9 R
FOR i:=0 TO Tmax DO + G( ]0 [' @ ?! ATr:=i*dt, a' M* v/ }9 r$ g
if Tr>t0(x)# `' v# b- H5 Z: n8 w5 \, P
then. Q% z7 Y2 A5 P9 H1 T; n) ?
if Tr>t0(x-L)+tau I4 ]( e; Z6 |+ d' o, Fthen8 |; B$ N& H7 Y2 o$ T4 P& R
Ui0:=f0(x,Tr)*(f1(x,Tr)-f1(x-L,Tr-tau)) 5 w/ u% m4 Q4 A2 fUiD:=ln( f2(x,Tr)/f2(x-L,Tr-tau) )-1/b*ln( f3(x,Tr)/f3(x-L,Tr-tau) )9 y( n: K" h5 T+ J2 B% t% Z4 Z
else ; K# f8 x2 h/ \: |% q& hUi0:=f0(x,Tr)*(f1(x,Tr)+1)& g0 Z m2 G+ m3 ^9 d" C6 k! s8 X V& t
UiD:=ln( f2(x,Tr)*f0(x,Tr) )-1/b*ln( f3(x,Tr)/(1+b) )' N# k3 u' T4 g
endif 9 v- V6 V. M0 ]/ j- Kelse 8 ?0 K" r; M2 L7 w# R# zUi0:=0, UiD:=0 ' @$ |8 f E9 f/ F1 K5 Pendif+ C4 i8 x1 G! x
if AB=1 then C) J' p% L2 gUindA0[i]:=Ui0* k% Y8 L) Q# s- B
UindAD[i]:=UiD ! p9 l2 c9 A' U* d9 m. [3 l/ ?6 \g1[i]:=a1*dt. B( J0 k9 G2 H8 `
if i>0 7 y8 p1 R' O% f' i7 f2 T1 _then F9 J1 Q+ `/ y$ ag2[i]:=a1*sqrt(eps0/(PI*sigma*Tr))*dt 2 ~" n- S- h* s. Z- D/ \1 R% {endif # e) O2 U0 `1 j" C& delse $ P( b) u% J$ @( B6 I( [3 D% LUindB0[i]:=Ui0* x2 x7 R b2 A, d0 P" u
UindBD[i]:=UiD+ ]! G+ M2 [( ^& L5 f/ x
endif% J# O- C& Z* c" s% t1 h* J6 l- u& H
ENDFOR5 a1 o6 {. i- ~8 T# E! B; Y
ENDFOR ) m6 Z" G- R8 q, `0 }2 N& @1 xi:=Tmax' K0 K* }+ ]' O/ J( E' `% _
WHILE i>1 DO1 S0 A# a, d& E9 x
uk[1...4]:=0 2 ]4 [. a' ~3 y# L4 u3 bFOR Tr:=1 TO i-1 DO ' S/ s; U/ ?5 Z8 E8 w: euk[1]:=uk[1]+UindA0[Tr]*g1[i-Tr] & A9 D8 L; m. G! ~8 H7 {% E5 @uk[2]:=uk[2]+UindB0[Tr]*g1[i-Tr] # P" L9 j4 N, F" Z' B; n; v4 }) s% N3 J7 t; L
uk[3]:=uk[3]+UindAD[Tr]*g2[i-Tr] 0 n6 }8 s$ g% J0 m' Q: k, k2 f+ d; i% f: L) s8 _1 o% ~& l4 p. L8 u
uk[4]:=uk[4]+UindBD[Tr]*g2[i-Tr]# [% J- G' J- p7 _! `
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ENDFOR+ B$ V& {2 H0 `- e {9 M; t
UindA0[i]:=uk[1]+0.5*UindA0[i]*g1[0] 8 E1 u7 x$ k* l8 |9 ^UindB0[i]:=uk[2]+0.5*UindB0[i]*g1[0]$ _1 l% d) }4 T, ~% X
UindAD[i]:=uk[3]+(UindAD[i]*c2+UindAD[i-1]*c3)*c1/ ^6 O4 t& L" V7 s" \7 r w
UindBD[i]:=uk[4]+(UindBD[i]*c2+UindBD[i-1]*c3)*c1: w+ o2 X4 D( \0 \' }0 q2 B
i:=i-1) Z' L+ p# Z0 [1 y4 w1 R1 Q
ENDWHILE2 B& F( a; r( z, T1 [2 p/ }, ^
Tr:=trunc(th/dt)6 F& G+ B' s' k& A: s( a- S
* N7 Q% u) U* k3 DFOR i:=Tmax TO Tr BY -1 DO 2 G5 r! ~2 C) K& \. W* t9 a5 IUindA0[i]:=UindA0[i]-b1*UindA0[i-Tr] . P1 y, |! z; S( D. Y% p$ p( RUindB0[i]:=UindB0[i]-b1*UindB0[i-Tr], ]! k \' g5 g6 U0 O7 R' a8 }* B
UindAD[i]:=UindAD[i]-b1*UindAD[i-Tr] 7 }+ L0 G( [/ OUindBD[i]:=UindBD[i]-b1*UindBD[i-Tr] 2 S0 g3 E" I/ S1 {endif. b `, Q: O1 C/ X+ e
ENDFOR : Z/ L3 | Z7 M: t dENDINIT: ], m. h' [6 W
EXEC 1 ]- ^6 i3 }" n+ }4 h+ SFOR i:=1 to n DO 6 ~* L& k4 K% }- L! F* pUrA[i]:=60*I0*b*(z[i]*UindA0[t/dt] - UindAD[t/dt]) +2*delay(UBP[i],tau-dt,1)-delay(UrB[i],tau,1) " E0 i3 ^' K( G9 M3 e$ c1 cUrB[i]:=60*I0*b*(z[i]*UindB0[t/dt] - UindBD[t/dt]) +2*delay(UAP[i],tau-dt,1)-delay(UrA[i],tau,1). O1 o8 P' z: V. _
ENDFOR . v# f% X: b, n# M5 T& DENDEXEC ! ]1 g% H }0 o+ T7 ^ENDMODEL; d" z) ~; a! [; D& S6 s& g
/ T5 ?4 O$ p; t# @* S: k6 {4 q程序报错如下 / v7 Z$ j5 g4 k0 [" ~KILL = 422. The present statement is interpreted as a value assignment statement, and the preceding name is interpreted as a/ ? E2 \6 C3 ]/ w: [: [' ?: O
variable to which a value is being assigned. The identification of this variable is interpreted as complete, and should now be: \8 p% k% {7 P/ v* [ m
followed by ":=", in the following format: w: u) i7 Z1 L5 `: C variable_identification := expression7 h4 V+ x$ R+ u' m+ ?* g* j
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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。 N5 M) H& q) e7 M. c& N, b8 \