PSCAD高手必看的啊？who kown？

xuyufufzu

i mean how to apply the practice parameter to the PSCAD simulation environment.

yizhangsjtu

It is hard to teach you those details here. I will notify you when the HVDC centre offers any course in China. You may go there to get the training. I expect there will a course later this year.
Buy the way some of the universities in China have pretty good knowledge in PSCAD.Let me know where you are now, I will try to refer you some place to learn.
In the mean time reading the PSCAD manual will be a help.

yizhangsjtu

It is hard to teach you those details here. I will notify you when the HVDC centre offers any course in China. You may go there to get the training. I expect there will a course later this year.
2 R/ s: {2 I2 \9 s. FBuy the way some of the universities in China have pretty good knowledge in PSCAD.Let me know where you are now, I will try to refer you some place to learn.
In the mean time reading the PSCAD manual will be a help.

xuyufufzu

i am in Fzu University now. i should study hard to know the theory of the pscad.
thanks .

xuyufufzu

大家都知道，传输线中的波阻抗的数学模型，上次版主说，PSCAD 与EMTP的传输线的理论都是相同的。
我去看了下EMTP 中的rulebook中的理论，发现里面关于波阻抗的那些内容，估计错了，

suxunwen1

讨论的帖子

xuyufufzu

PSCAD和EMTP 的传输线的理论基础

yizhangsjtu

I wonder where is the table 3 coming from. Obviously there are mistakes in the table.
. t3 n; }5 ?/ q  v5 r5 x7 A
The surge impedance is right:
1 t2 K; Z9 g+ T( P6 M7 xZs=sqrt(L/C)

The velocity is wrong, it should be:
v=1.0/sqrt(L*C)
! h! o; l4 b, n+ E& C. jas such the travel time would be:
t=Length/v=Length/sqrt(L*C)

Both EMTP and PSCAD/EMTDC, or anyone who does electromegnectic transients simulation, must follow those basic concept, or else they won't work.

xuyufufzu

弄出来，让大家更加熟悉传输线的理论

xuyufufzu

在里面，我看不懂几个内部函数的意思，能指导一下么？
#IF Tap
; d/ c6 A1 ]' d+ ?" p2 w #STORAGE STOR:26
( M7 S& f2 `3 D# i #IF SAT==TAP
! E( J6 r! e0 n/ ~9 i+ j& [/ I  #LOCAL REAL RVD1_1
      RVD1_1 = $TapI
( _& C2 t) z+ ^& y) Y  Y0 d      IF (RVD1_1 .LT. 1.0E-8) RVD1_1 = 1.0
8 {- w5 R+ u9 @4 A& k1 l% C #ENDIF
) j, Y- K0 q$ |- r; E  u#ELSE
#STORAGE STOR:21
#ENDIF
# K" |. q& c, B!  TRANSFORMER SATURATION SUBROUTINE
#SUBROUTINE TSAT21 Transformer Saturation Subroutine
#LOCAL REAL X_KNEE
#IF Txk>0
      IF (TIME.GT.$Txk) THEN
         X_KNEE = $Xknee
) l) f* y7 O9 z; v: H2 t6 F      ELSE
7 Q: W( w# {2 Y) Z! i8 {3 G1 O         X_KNEE = -$Xknee
      ENDIF
#ELSE
      X_KNEE = $Xknee
#ENDIF
9 r* K" P. A1 V: H#LOCAL REAL TURNS_V
$ e8 [  i- n1 }( p#IF SAT==1
) L. z' q: B5 I) K: a% U      TURNS_V = $V1
#ELSE
0 Z' E; l( Z. U8 n      TURNS_V = $V2
# L- z; i5 r+ x/ R# H; [5 y3 k) f#ENDIF
: |* r* C6 `) l$ D0 l9 w#IF SAT==TAP
     + * RVD1_1
3 u: O4 Y4 S  h$ v" x#ENDIF
#IF SAT==1
#IF CuL>0.0
      CALL TSAT21($X1,$B1,
#ELSE
      CALL TSAT21($A1,$B1,
, a- y6 Z& |, r #ENDIF
#ELSE
#IF CuL>0.0
2 y# K5 o4 b/ Z3 K* T      CALL TSAT21($X2,$B2,
& h- {9 r6 O# g* S: V+ u) C #ELSE
1 R5 ]8 {  C' c* D0 I5 L! d8 M      CALL TSAT21($A2,$B2,
#ENDIF
6 w4 |/ j5 U- r. V2 q1 s. C#ENDIF
     + 0,0, 0,0, $SS,$Tmva,TURNS_V,$Xair,X_KNEE,$f,$Tdc,$I_m1, 0.0, $Enab)
% l+ p% h1 u# j4 [- |#OUTPUT REAL IMAG {-STOR(NEXC-21+17)}
#OUTPUT REAL FLUX {STOR(NEXC-21+11)}
#IF Tap
: e; U- g& @; C- K7 ]7 F      CALL TRTAP5($#[1], $Tap, $SS, $TapI)
' I  @5 k% V% i$ _#ENDIF
!