PSCAD高手必看的啊？who kown？

xuyufufzu

are this examples of the PSCAD? i guess it is . and i know the case .but i can't know how to apply that to the actual transformer.
& X4 Y, \, a4 y9 C$ h6 x% a

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.
& x6 M: K0 t' h" v- R* H0 `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.
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.
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。
3 U9 K: T6 r3 E( ]! m4 ^( H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.
2 b% N" r* I* g8 m
The surge impedance is right:
3 Z' R  O) u5 \Zs=sqrt(L/C)
. e, w$ g2 R# U. H
The velocity is wrong, it should be:
v=1.0/sqrt(L*C)
  @# }& w# t4 d! a" G& ~2 }% Cas 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