Mahesh's profile - activity

Hi @txc! Sure. I will write to you. Actually, I want to prepare both UDM equivalent of PLNTBU1 and REAX as well. Thanks a lot.

Hi @txc and @sofiguer! I have just started to write user defined models. Now working to write a PPC model to control two sources similar to PLNTBU1+ REAX. Is it possible you could share 'headers' of UDM to link a bus based model to REAX type of model. I can manage control block diagrams. Thanks a lo

Yes. Make sure that DLL was generated with default fortran compiler for the PSSE version which you are using.

and also http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.126.2303&rep=rep1&type=pdf

I have used first approach only. I will try second one and let you know. (Earlier I thought E-tran creates some wide band equivalent for necessary frequency ranges.But these references show we can apply contingencies etc in retained network http://descargas.indielec.com/web/E-TRAN_Chap9_Theory.pdf )

Please post part of the code in "pssneva.py" where error is appearing.

I think just the way we apply fault , trip line during dynamic simulation you can change line reactance.

I think NEVA and LSYSAN have same license.

Hi

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

Yes. NEVA licence is sold separately.

Try psspy.case(r"""D:\a.sav""")

It might be getting stored in C:\Program Files (x86)\PTI\PSSE33\EXAMPLE or PSSBIN folder !

Hello Leon

I think you will have to write the code for prony from algorithm (the best ) or replicate ( Ok ; Careful) from other language codes such as matlab or C. (e.g. http://www.mathworks.in/matlabcentral...).

From one of used files:

To add shunt

psspy.shunt_data(bus#,r""":""",1,[0.0,0.0])

psspy.shuntchng(bus#,r""":""",i,[_f, -267.0]) #comment -267 MVAR shunt.

To remove shunt

psspy.shuntchng(bus#,r""":""",0,[f,_f])

over and out.

Thanks a lot!

Can we delete an item from existing diagram? if yes how?

Thanks

Dear Jconto Thanks for your quick reply. I tried it , but its not working for me. The irf file takes input through pop up windows. Those input requests are not redirected on python IDLE. The program just kind of hangs at the pop up window time. ( IRF isn't defined to take inputs like"myiplan,a, b,c

Hello all,

I have an old .irf file which I run in .idev( response) file. It requires certain inputs hence creates pop up boxes in PSS/e. How to feed these pop up boxes during running in python shell? I have tried with redirect changes but no use. (The code in .irf file is not accessible.)

Thanks.

if you select more than two buses , it creates a subsystem with those buses. You can then do certain tasks on than subsystem.

Manual is the best resource !

(otherwise expert users' guidance or training from PTI )

No book in public domain available!!!

P.S. Manual/Documentation is available in PSSE/PTI installtion folder like C:\Program Files (x86)\PTI\PSSE33\DOCS or C:\Program Files\PTI\PSSE33\DOCS

Its very easy to run dynamic simulation using GUI only. Just load .sav and .dyr files then go to dynamic tab and add channels...(basically quantities to observe)... In same tab go to perform simulation. Provide out put file name to store plots. Select plotting requirements. Initialize first. Then Run the simulation to specific time you need. You can apply disturbances also after time you wish. Continue simulation. Take a new plotbook from file tab. add plots as many as you want , may be on different pages. Open .out file . On left there is Project Tree View ....Go to channels in that... then drag required channels on plots selected. There you go.

Either increase the bounds VRmax and VRmin or reduce bounds of VR1 and VR2. You can try decreasing KA as well. Basically one of you internal variable VR is going out of limits during initialization. You can change time constants also. Get a change which affects you exciter least.