yes i have downloaded that cases
i mean how to apply the practice parameter to the PSCAD simulation environment. 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. 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.
thanks
i am in Fzu University now. i should study hard to know the theory of the pscad.thanks .
关于EMTP中的传输线模型的错误问题
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， 讨论的帖子::smile:: ::smile::
呵呵，是的啊，需要讨论下
PSCAD和EMTP 的传输线的理论基础 I wonder where is the table 3 coming from. Obviously there are mistakes in the table.The surge impedance is right:
Zs=sqrt(L/C)
The velocity is wrong, it should be:
v=1.0/sqrt(L*C)
as 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.
嗯，我也是觉得错了的啊
弄出来，让大家更加熟悉传输线的理论不知道，谁在研究PSCAD中，变压器的代码
在里面，我看不懂几个内部函数的意思，能指导一下么？#IF Tap
#STORAGE STOR:26
#IF SAT==TAP
#LOCAL REAL RVD1_1
RVD1_1 = $TapI
IF (RVD1_1 .LT. 1.0E-8) RVD1_1 = 1.0
#ENDIF
#ELSE
#STORAGE STOR:21
#ENDIF
!TRANSFORMER SATURATION SUBROUTINE
#SUBROUTINE TSAT21 Transformer Saturation Subroutine
#LOCAL REAL X_KNEE
#IF Txk>0
IF (TIME.GT.$Txk) THEN
X_KNEE = $Xknee
ELSE
X_KNEE = -$Xknee
ENDIF
#ELSE
X_KNEE = $Xknee
#ENDIF
#LOCAL REAL TURNS_V
#IF SAT==1
TURNS_V = $V1
#ELSE
TURNS_V = $V2
#ENDIF
#IF SAT==TAP
+ * RVD1_1
#ENDIF
#IF SAT==1
#IF CuL>0.0
CALL TSAT21($X1,$B1,
#ELSE
CALL TSAT21($A1,$B1,
#ENDIF
#ELSE
#IF CuL>0.0
CALL TSAT21($X2,$B2,
#ELSE
CALL TSAT21($A2,$B2,
#ENDIF
#ENDIF
+ 0,0, 0,0, $SS,$Tmva,TURNS_V,$Xair,X_KNEE,$f,$Tdc,$I_m1, 0.0, $Enab)
#OUTPUT REAL IMAG {-STOR(NEXC-21+17)}
#OUTPUT REAL FLUX {STOR(NEXC-21+11)}
#IF Tap
CALL TRTAP5($#, $Tap, $SS, $TapI)
#ENDIF
!
