Urgent:How can I get the right parameter of line that I want

[Anonymous]

Dear friend:

Imust descripe my problem very clearly.

I used the Frequency Dependent(phase) Model to construct a simple circuit,which contains only one generator and one transmissionline. I use the "Interface to Harmonic Impedance Solution" to get the impedanceseen fromno-load end of the line.

[Anonymous]

And I want to get the + sequence parameter,i.e R,X,B of transmission line.I scan the system impedance with the distributed-parameter transmission line model. The parameters of the distributer-parameter model are calculated using the + sequence R,X,B.

I use + sequence R,X,B, which are contained in the Tlinename.out file, tocalculate distributer parameter .

My question is: Why the result of my method is quite different from these of PSCAD v4.2?

[Rohitha Jayasinghe]

Frequency scan component gives the impedance seen from the point of interest. It would be series parallel combination of R+jX and G+jB.

[Anonymous]

I know the Frequency scan component gives the impedance seen from the point of interest. I develop my own program to calculate the harmonic impedance seen from interest point. In my program, I use the transmission line 0+ sequence parameter R,X and B to calculate the equivalent pi circuit. Can I use the R,X, Bthat saved in Ilinename.out file in pscad to calculate the equivalent pi circuit parameter?

For example, a generator ,whose X'd is0.25i , is connectted to "s" point of transimission line "line1".And the other end of transimission line if "r",which is not connected anything. In PSCAD, I already used this example to obtain the impedance seen from"r" end. I want to use my program to generate the same result, so I used the R,X, Bthat saved in line1.out file in pscad .But the result is quite different.Please tell me what's wrong with my method?