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.
9 [2 O! X' g: j; R* ~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.
! k4 m6 |( X7 SIn 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.
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.

xuyufufzu

i am in Fzu University now. i should study hard to know the theory of the pscad.
) p, a1 ]/ t# M9 S5 r) T% I) xthanks .

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。
) A. m" ~" K3 g9 o# I! m# g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.

( k6 [, v( ]  r: [" h7 FThe surge impedance is right:
Zs=sqrt(L/C)

The velocity is wrong, it should be:
2 x+ \0 {  j; e: tv=1.0/sqrt(L*C)
as such the travel time would be:
- r7 e/ C7 H4 S9 `t=Length/v=Length/sqrt(L*C)

  m3 s% Y* }; ~* K' x% c4 ~: w! l- _' pBoth 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？
# j5 \0 H2 r; a#IF Tap
#STORAGE STOR:26
7 k5 i% ^0 Q* m+ J/ F, d #IF SAT==TAP
( t( U/ x  G( s6 e9 g- p! ]) W  b& R  #LOCAL REAL RVD1_1
& x; p6 S, V7 c: S3 V- q      RVD1_1 = $TapI
      IF (RVD1_1 .LT. 1.0E-8) RVD1_1 = 1.0
#ENDIF
+ }- Q7 k4 o7 |0 F' h0 _2 d3 k6 w#ELSE
, D5 C5 T9 v0 j, m #STORAGE STOR:21
4 p- d* P& }5 {  ~5 L$ w#ENDIF
! L; L: R( i5 F. A+ u2 v!  TRANSFORMER SATURATION SUBROUTINE
9 }5 E: W% [1 l5 }; r. W#SUBROUTINE TSAT21 Transformer Saturation Subroutine
0 k4 v" Z& N% W6 T#LOCAL REAL X_KNEE
#IF Txk>0
# q$ M0 J  i+ `      IF (TIME.GT.$Txk) THEN
         X_KNEE = $Xknee
      ELSE
4 v1 V& R5 d- E5 {* O         X_KNEE = -$Xknee
  b+ O: F2 z( f      ENDIF
0 q* }: ~/ e! p: h#ELSE
      X_KNEE = $Xknee
$ o2 G0 x) i2 l8 \! y- C/ ~#ENDIF
) C5 |2 H0 {" H6 K4 t- X#LOCAL REAL TURNS_V
# [! H3 T: l5 @3 S, Z#IF SAT==1
: K3 S: x# b& _! K% i      TURNS_V = $V1
6 J6 T( C2 T0 z4 ^1 |0 |, @% w#ELSE
- l# I& J9 a; S/ u' \      TURNS_V = $V2
! E+ k" i9 r9 e: B#ENDIF
#IF SAT==TAP
     + * RVD1_1
2 X5 I9 b3 T' z% K6 `2 _& x#ENDIF
#IF SAT==1
#IF CuL>0.0
      CALL TSAT21($X1,$B1,
; D# q" P: I+ `6 r7 X$ k" J+ v #ELSE
5 {! ^/ J7 q+ S1 g) _2 {- g* d! }, i      CALL TSAT21($A1,$B1,
#ENDIF
#ELSE
#IF CuL>0.0
      CALL TSAT21($X2,$B2,
1 Y2 a% r0 |; J6 E #ELSE
; ^$ V5 K3 B8 s! s      CALL TSAT21($A2,$B2,
: B- b( c' z% U( @3 e( |0 k& p #ENDIF
- t. Z: \2 w; @3 Z! l9 h#ENDIF
8 A! U! f  T! u$ b0 \4 W9 @$ U     + 0,0, 0,0, $SS,$Tmva,TURNS_V,$Xair,X_KNEE,$f,$Tdc,$I_m1, 0.0, $Enab)
  \1 j; D4 d9 S0 G' D9 ^#OUTPUT REAL IMAG {-STOR(NEXC-21+17)}
- H6 h- _" P; n; ^4 }2 v0 M5 T' F#OUTPUT REAL FLUX {STOR(NEXC-21+11)}
; R4 ^# t7 B( B#IF Tap
: `: c! n: v3 w# k2 H      CALL TRTAP5($#[1], $Tap, $SS, $TapI)
* `- [9 t' _; b0 J# s3 s#ENDIF
% U/ W" q1 L1 K2 y* `!