How to make a conditional statement based on PSSE output file?

answered Jul 10 '14

jconto
2756 ●10 ●30 ●41

can you expand on what kind of logic you need to have in the loop, based on a frequency value after a simulation is completed? based on instantaneous value or average value, with or without delay? To interact with a variable during a simulation is better to use a user-defined model, developed in Fortran, though it is more complicated.

answered Jul 8 '14

nwilson
100 ●3 ●7 ●10

Here's code that reads the PSSE output file and evaluates the data for a specific condition.

#dyntools contains the CHNF class for extracting channel data from .out files
#the dyntools library comes with PSSE
from dyntools import CHNF as ChanFile

threshold = 5   #set this to desired limit

#outfiles is a list of outfile paths
outfiles = ["c:\\results\\myout1.out","c:\\results\\myout2.out"]    #example

chnfall = ChanFile(outfiles)
#loop through outfiles
for outfile, clist in chnfall.chanid.iteritems():
    #loop through channels of each outfile
    for channelnum, channelname in clist.iteritems():
        #the last channel is the 'time' channel. We're ignoring it
        if channelnum <> 'time':
            print "Channel " + str(channelnum) + channelname
            if channelname == "gen1volt":
                #extract channel data from channel.
                #The CHNF class converts outfile names to lower case. Use the lower() function
                yvals = chnfall.chandata[outfile.lower()][channelnum]
                ymax = max(yvals)
                if ymax > threshold:
                    print "Threshold exceeded"
                    #perform action as a result of exceeded threshold