Satyaki Banik's profile - activity

Hello, I have been using the following lines of code to generate the .out and excel files after a dynamic simulation:

psspy.set_chnfil_type(0) # generate .out file (0), not .outx (1)
psspy.change_channel_out_file(outFile)
# run dynamic simulation
psspy.strt_2([0,1],outFile)
*dynamic simuation here*

import dyntools
chnfobj=dyntools.CHNF(outFile)
chnfobj.xlsout(channels=[],show= False)

Now when I open PSSPLT, select CHNF and select a .out file, there is an error that says Invalid file type <file_path> (RWFIL)

1. Is there anything wrong in creating the .out files?
2. Is there any way I could write a piece of code to plot rate of change of frequency (function #17: "time derivative") using PSSPLT and export it to an excel file? I saw the API documentation, but cannot figure it out.

Thank you.

Thank you, Gary22212. I understand that I can not change the wind power output during dynamic simulation as the sources are converted. But how do I change the MW output 'before' power flow? Do you have any code example that accomplishes this? Thanks in advance!

For renewable simulation of South Australian Grid with Type-3 wind power plants, I've two wind machines of 50 MW each and used the following dynamic models so far:

1. Generator model: WT3G2
2. Electrical model: WT3E1
3. Mechanical model: WT3T1
4. Pitch model: WT3P1

As I've seen, the wind power plants basically act as constant power source of 50 MW as no wind speed variability is incorporated. From this paper I've seen that the wind speed variability was modelled using Bivariate Weibull distribution (1) and Turbulence was modelled using Kaimal Spectrum (2).

My question is: how do I model these 2 things into my PSSE simulation? Where and how do I add them?

N.B. I'm using PSSE Xplore 34 which allows me to include the following models as well:

• Aerodynamic model: WT12A1, WTARA1
• Torque control model WTTQA1
• Auxiliary (plant control) model: REPCA1, REPCTA1

Sadly, no Gust models available.

Hey there!

You have a bunch of models available for modelling wind machines which can be found here at PSSE Documentation > Program Application Guide (PAG) Volume 2 (or PAGV2 for short); Chapter 22.

Also, you can visit the following links for having an idea of default parameter values for common wind plant .dyr models:

WT1 - Type 1 Generic Wind Model: https://www.esig.energy/wiki-main-pag...

WT2 - Type 2 Generic Wind Model: https://www.esig.energy/wiki-main-pag...

WT3 - Type 3 Generic Wind Model: https://www.esig.energy/wiki-main-pag...

Hope that helps!

In PSSE Xplore 34 version, I've found that there is an example .ECD file given in the 'EXAMPLE'' folder (C:\Program Files (x86)\PTI\PSSEXplore34\EXAMPLE) named savnw.ecd. To import this into PSSE, I used the following code snippet:

# opening .SAV file first
psspy.case(r"""C:\Program Files (x86)\PTI\PSSEXplore34\EXAMPLE\savnw.sav""") 

# solving for load flow
psspy.fnsl([0,0,0,1,1,1,0,0]) 

# importing and running ECd for particular load (3285.6 MW) and MVA (100 MVA)
psspy.ecdi(0,1,1,r"""C:\Program Files (x86)\PTI\PSSEXplore34\EXAMPLE\savnw.ecd""",0,[0.0,0.0])
psspy.ecdi(0,1,2,r"""C:\Program Files (x86)\PTI\PSSEXplore34\EXAMPLE\savnw.ecd""",0,[0.0,0.0])
psspy.ecdi(0,1,3,r"""C:\Program Files (x86)\PTI\PSSEXplore34\EXAMPLE\savnw.ecd""",0,[ 3258.6, 100.0])
psspy.ecdi(0,1,4,r"""C:\Program Files (x86)\PTI\PSSEXplore34\EXAMPLE\savnw.ecd""",0,[0.0,0.0])

Thanks a lot. I've found it in POM Article 5.32.

I did not find any resource in this forums searching this keyword. How can I find (or make) an ECDI file?

Thanks in advance.