Berwin's profile - activity

You can add function from Plotbook-> Plot Attributes->Func and here you can add the arithemetic function to calculate the power factor from active power and reactive power.

You have the use the function to calculate/plot the power factor based on active and reactive power traces from PSSE.

Generator capability curve data can be stored in .gcp file format. Report in PSSE output window to view it.

Above PSSE v35 this can be modified/veiwed inside the machine data and this can be veiwed from Network data-> Others->Machine capability curve

You can use it as psspy.rawx_to_csv("bus", "Test")

TBLNAME- I have used table "bus"

OFILE- path and output file name

Please see the below link. This paper describes an approach to derive the equivalent representation of a WPP collector system.

https://www.nrel.gov/docs/fy08osti/42...

PSSE allows to model reactive power capability in .gcp file format, However to do it effectively I would suggest you modify Q min and Q max based on your capability for individual cases.

You can also automate it with python.

Would you be able to share your test model, so that I can add relevant answer.

From your question I unsderstand you should be modelling a generation plant and trying to control power flow at POI.

The answer is, You have to set Pgen on your generators to change your power at POI from 0 to 100% Additionally to maintain fixed power factor you also need to adjust Qgen or V pu accordingly to control reactive power at POI

From your question I unsderstand you should be modelling a generation plant and trying to maintain reactive power/ power factor at POI.

You can set fixed Qgen for the generator (keep same value for both Qmax, Qmin) and with iterative method you can adjust this acheive required reactive power corresponding to that powerfactor.

Or other way would be you can adjust Voltage of the generator to control the reactive power flow at POI.

You can't import the sld from PSSE into Powerfactory. Once you import your raw data into Powerfactory you can auto create your SLD inside it.

Hello, You can solve the network before initialisation and make sure the convergence tolerance are met and also Q at branch is within the limits of PPC specified limits.

There is no such calculation available for calculating those data. In case of unavailability of data you can use the typical parameters based on the same machine rating

Hi Gary,

Ideally v33 idv file should work with v34 as well, You may just need to do some minor changes in the idv to file to import the PSSE files.

Hello, are you initializing with some setpoint or VAR reads the Q directly. If you are initializing with Q value user defined, then make sure the Q is selected from the same end. I would suggest try adding a line with zero impedance and try initializing it.

psspy.enablediagcontour(1,1,1,4,1, 100., 4.0, 1.0, 1.25, 0.75) psspy.changediagcontour(1,1,1,4,1, 100., 4.0, 1.0, 1.25, 0.75) psspy.printdiagfile(r"""Foxit PDF Editor Printer""",1,1) Please replace " Foxit PDF Editor Printer" with your default pdf veiwer to save it

I think the generic models available in the PSSE dosen't have Virtual Inertia included in their dynamic model. You can try with some UDM models availbale for wind turbine that has this function modelled.

The B represents the susceptance of the line which is included as a part of equivalent R,X,B line parameters. The G+jB at both the ends are for shunt elements connected to line, like you can use it to model line reactor that will be switched along with the line

Hello, This command will enable the contour plot in the SLD and you can also change the contour setting using the python code. Once it's done you can print the SLD page to get the contour included in the pdf file.

From the dyanmic data of the machienes avalilable in you network, you can just multiply the Inertia constant with the MVA rating of the machine. Do the summation of the all the generators to get total inertia of the network,

Check with PSSE release notes. If there is no change in governor model then try checking your simulation/parameter setting and make sure those are same in both the versions.

If the tests are with SMIB model, then you can try using the Playback model to bring the voltage down

This is just to see if it crashes just because of the fault

Goto Plot Book and deselect Multiple Y axis. This shows all the channels in same axis

Is there any tool or script available for conversion of flecs code to fortran code. ?

In the google drive link that I got from this site, I found that this can be done using * FLECS32 ( LIBmaker.bat)*

Can anyone help with how to do this translation of code.

Thanks in advance

Is it possible to convert this .flx file to .f90 fortran code ?

The error got fixed, however I couldn't get any excel output file. And at the output bar it shows that "ASCC results not available." Also can you please help how to export IEC Fault calculation results to Excel?

Can you please help to fix this. Or can you please help with running procedure for this script to get the results. Thanks

While am running the script scexcel.py am getting the below error File "C:\Program Files (x86)\PTI\PSSE33\EXAMPLE\scexcel.py", line 88, in main if os.environ['PYTHONCODE']: File "C:\Python27\lib\os.py", line 425, in __getitem__ return self.data[key.upper()] KeyError: 'PYTHONCODE'

You can try taking the out files by setting- print, write, plot time step as 0

Practically, if you are regulating the voltage at one of the low voltage winding, the tap at HV get adjusted and the other Low voltage winding voltage will also get adjusted automatically.

You can get the actual short circuit values by modifying as below Misc-> program settings-> change the short circuit output from pu values to physical . The values can also be displayed in polar form by changing short circuit coordinates from Rectangular to Polar

Please see his question. He is trying to add only the inverter parameters from the new WHSF.dyr to the existing NEM.dyr file, And he might be facing this issue because of invalid python command. so this should probably works. :)

Hello,

you can modify the line as shown below to add the new dyr file to the existing dyr file

psspy.dyre_add([1,1,1,1],"WHSF.dyr","","","")