NEVA - PSS/E - Eigenvalue analysis

Javier
29 ●4 ●5 ●9

Hello:

I would like to ask if anyone has experience with NEVA, which is separate PSS/E add-on module to perform small-signal analysis.

I think that I have all correctly installed, but I'm not able to carry out an eigenvalue analysis of an existing PSS/E case. The "Dynamics" tab of PSS/E has the option of "Launch NEVA Eigenvalue analysis", but it appears in grey and I can't use it.

I would like to know the cause of the problem and use NEVA.

Thank you very much.

Javier

Comments

Correct me if I am wrong, but you need to pay more to have appropriate license to be able to use NEVA.

Cao Huy (Jan 14 '15)

Yes. NEVA licence is sold separately.

Mahesh (Jan 14 '15)

Hello! How can i get NEVA ?

Emely (Jun 12 '0)

add a comment

2 answers

Sort by » oldest newest most voted

answered Jan 14 '15

Mahesh

113 ●2 ●2 ●11

updated Jan 15 '15

I think you are loading only ".sav" file and trying to run NEVA.

Load both .sav and .dyr files. Then the option is enabled and you can perform eigenvalue analysis.

There could be two things then. 1.Check if your file has errors. This will be reflected in progress window. (one of my 2 terminal dc model was wrong, there neva could not launch.) 2.Check if installation is correct. Try opening neva directly using icon in programs.

Also try savnw.sav and .dyr files from example folder in psse installation for NEVA analysis

link

Comments

Hello, Thank you for your anwers. I have the NEVA license and I am loading ".sav" files and ".dyr" files. So I don't know what could happen.

Javier (Jan 14 '15)

I haven't used NEVA, but with my experience with LYSANS, I think you should do ASTR activity before run NEVA.

Cao Huy (Jan 15 '15)

Thank you for the post. I have NEVA license but I don't have license for LYSANS module. I can not run ASTR activity because I understand that belongs to LYSANS module (please correct me if I am wrong). Because of this, I'm not sure if one should run ASTR before running NEVA.

Javier (Jan 15 '15)

I am using LSYSAN (PSSE 29) to calculate eigenvalues, eigenvector and check small signal stability. Since NEVA and LSYSAN do the same job, I thought that maybe NEVA is an upgrade version of LSYSAN.

Cao Huy (Jan 15 '15)

Have you done those activities "CONG", "CONL", "ORDR", "FACT", TYSL before run ASTR? After all, ASTR is an dynamic activity. In PSSE 33, I am able to run ASTR without NEVA and LSYSAN license.

Cao Huy (Jan 15 '15)

see more comments

answered Jun 11 '0

Emely
1 ●1 ●1 ●1

Hello!

I'm trying to make a small signal stability analysis in PSS E. I have already open the .sav and .dyr file, . I executed the power flow but when i execute the "launch eigenvalue analysis appears this error:

UnboundLocalError: local variable 'strValue' referenced before assignment

There may have been an issue running Python file:C:\Program Files (x86)\PTI\PSSEXplore34\PSSBIN\pssneva.py

I need your help.

link