sugui_'s profile - activity

I have further question about CrCT calculation. I always got the error message "Generators are not "converted"" and the simulation stopped. It seems like I do something wrong when saving the snp file. How to get a converted case when I load the .sav and .snp file? Thank you.

In my case, I want to reduce the short circuit current by adding a series reactor.

If this reactor is 25MVA with reactance=2 ohm, how to model it?

Thanks.

Hello everyone, I want to create .jpg file automatically using python, this is my code:

for i in range(0,10):
filename = "case" + str(i+1)
pssplot.openchandatafile(path+filename+""".out""")

pssplot.dragdropplotdata(filename,r"""2 - ANGL   11[GEN#1      22.000]1""")
pssplot.dragdropplotdata(filename,r"""3 - ANGL   21[GEN#2    16.500]1""")
pssplot.dragdropplotdata(filename,r"""4 - ANGL   31[GEN#3      16.500]1""")

pssplot.exportplot(path+filename+"""-A.jpg""",3)
pssplot.deleteselplot()
pssplot.insertplot()

When running this code, sometimes an error message(Axis Maximum Value must be >= Minimum) will come out and I need to skip the case manually. Is there any way to ignore this error message and the code still running well?

I'm building a substation using PSSEv34 substation function and I have two question that I have no idea. Please help.

1. In single line diagram, power flow through circuit breaker will display in MW/MVar. Can it display in Ampere or not?
2. (solved, STATION_POUT_2)Is there any API that I can check which circuit breaker is overloading?

Thanks for your answer. It will be a little annoying that if I want to take distributed generation's effect into consideration in fault current calculation, I have to build a machine data. Thus, I'm wondering if this function can simply my case, and I didn't find the relevant information neither.

In PSSEv34 or higher version, we can add distributed generation data in load. In fact, inverter-based generation resources will still contribute fault current although they connect to grid through power electronic components.

My question is, if I build a distributed generation resource in load data, does the fault current calculation of PSSE take this part into consideration? Thank you.

I'm wondering, if I use WECC 2nd generic renewable model for dynamic simulation, which parameter will be affected if I change "Mbase" of generator.

It seems like REPCA1's parameter, Pmax and Pmin, are related to Mbase. But I'm not sure is that right or there are more parameters which are related to Mbase.

Please help solve my doubts, thanks a lot.

I use "progress_output" function to solve it. I first set islct=6 and then set islct=1 to print ending message.Thanks again.

I use this .py to do ACCC, and I don't want the progress print at output bar because I have a lot of contingencies. It's work in v32, but not in v34. Thus, I'm seeking what makes it go wrong. Thanks for your answer. I learn a lot.

Hi everyone, I want to run .py file in PSSE, but I have some problem. Here's the code.

import time, socket, sys, os
sys.path.insert(0, 'C:\Program Files (x86)\PTI\PSSE34\PSSBIN')
os.environ['PATH'] = 'C:\Program Files (x86)\PTI\PSSE34\PSSBIN' + ';' + os.environ['PATH']
import psspy, redirect, pssarrays
redirect.psse2py()

Here's the error message. Could someone tell me why redirect.psse2py() not work? thanks.

Traceback (most recent call last):
  File "C:\Users\u027692\Desktop\V34_test\sa_1.05_V34.py", line 8, in <module>
    redirect.psse2py()
  File ".\redirect.py", line 147, in psse2py
redirect.RedirectError: Python currently sending output to Psse

Thanks a lot!

Hello,

I'm trying to use python running dynamic simulation automatically. Here is part of my code and I have 15 cases that use the same .sav file. Every time I simulate one case I will initialize PSSE first. If there is another way that I don't need to initialize PSSE and open case every time?

for i in range(1,16):
    if i==1:#case 1
        psspy.psseinit(10000) #initialize PSSE
        psspy.case(r"""C:\Users\bbbb4\Downloads\112L-150M.sav""")
        Predyr()
        psspy.strt(0,r"""C:\Users\bbbb4\Downloads\112L-150M\case1.out""")
        #### here's the code of event 1 ####
    if i==2:#case 1-1
        psspy.psseinit(10000) #initialize PSSE
        psspy.case(r"""C:\Users\bbbb4\Downloads\112L-150M.sav""")
        Predyr()
        psspy.strt(0,r"""C:\Users\bbbb4\Downloads\112L-150M\case1-1.out""")
        #### here's the code of event 2####

I thought it is difference because I don't see 9 CONs in Fig. 23-1. I will check again. Thank you. BTW, the POM I have are v33.4 and v34.2.

Hi, I would like to know where can I find the block diagram of this example. Thanks!!