I am running psse from python but how do I extract the data from the .out file using dyntools and then plot with matplotlib? In my view, this aspect has not been cover well on this forum. Does anyone have a complete code (load flow+dynamic simulation+extracting data using dyntools+plotting using matplotlib), say using the savnw.sav and savnw.dyr files in PSSE examples?
For plot code from dyntools,check also the post "Plot Legend For Dyntools" or "chanplot.py = dyntools_demo.py with function calls." zezo510 code did not work on my pc. I made a few mods to get it run in/out of the PSSe GUI:
import os,sys
#---User vars -----------------
outfile = r"""bus154_fault.out"""
chani = 41
psseversion = 33
#--------------------------------
if psseversion== 34 or psseversion== 33:
exec('import psse%s'%psseversion)
else:
pssepath = r"C:\Program Files (x86)\PTI\PSSE%s\PSSBIN"%psseversion
if pssepath not in sys.path:
sys.path.append(pssepath)
#--------------------------------
import psspy
#psspy.psseinit(15000)
#--------------------------------
import dyntools
import matplotlib.pyplot as plt
chnfobj = dyntools.CHNF(outfile)
short_title, chanid, chandata = chnfobj.get_data()
t = chandata['time']
v = chandata[chani] #based on the channel identifier set in the dynamic simulation
fig = plt.figure()
fig.patch.set_facecolor('0.8')
plt.plot(t,v,linestyle='-', linewidth=1, color='green',label="Voltage") #change ax1. to plt.
plt.grid(linestyle='--', color='grey',linewidth=0.5)
plt.xlabel("Time")
plt.ylabel("Voltage")
plt.legend()
axes = plt.gca()
#axes.set_facecolor('w') #<- produce error
#axes.set_ylim([0.6,1.2])
axes.set_xlim([0,10])
plt.savefig(r"""figure.pdf""",dpi=fig.dpi,facecolor='0.8')
plt.show()
exec is completely unnecessary here, deprecated in Python 3, and generally a bad idea when posting code for public use. I'm not sure why you got errors with set_ylim and set_facecolor, could you perhaps post them? The difference in using plt.stuff and ax.stuff is that plt style is more Matlab.
Does this work on extracting large amount of data from .out file? When i tried to run the WSCC 9 bus system and extracted the data, it worked perfectly. However, when i try the code to extract the data from results or large simulation, this is what i got:
C:\Users\jcsC\Anaconda2\python.exe D:/WSCC9busPSSE/WSCC9busPSSE/plot2.py Traceback (most recent call last): File "D:/WSCC9busPSSE/WSCC9busPSSE/plot2.py", line 22, in <module> chnfobj = dyntools.CHNF(outfile) File ".\dyntools.py", line 1007, in init File ".\dyntools.py", line 341, in outextractdata File ".\dyntools.py", line 315, in outextractid Exception: ERROR ... File d:\wscc9buspsse\wscc9buspsse\q530-sum-on-cct-1-12cy.out version is 1.47195e+19 DynChanExtract handles version 2.0 files only.
This is a simple example to extract (time) and (voltage) channels from an output (.out) file and plotting them using matplotlip. Then saving the resulting plot in a pdf file. You can manipulate it to extract and plot any other data you need.
import dyntools
import matplotlib.pyplot as plt
outfile = r"""test.out"""
chnfobj = dyntools.CHNF(outfile)
short_title, chanid, chandata = chnfobj.get_data()
t = chandata['time']
v = chandata[1] #based on the channel identifier set in the dynamic simulation
fig = plt.figure()
fig.patch.set_facecolor('0.8')
ax1.plot(t,v,linestyle='-', linewidth=1, color='green',label="Voltage")
plt.grid(linestyle='--', color='grey',linewidth=0.5)
plt.xlabel("Time")
plt.ylabel("Voltage")
plt.legend()
axes = plt.gca()
axes.set_facecolor('w')
axes.set_ylim([0.6,1.2])
axes.set_xlim([0,10])
plt.savefig(r"""figure.pdf""",dpi=fig.dpi,facecolor='0.8')
plt.show()
Asked: 2017-09-01 17:31:29 -0500
Seen: 6,485 times
Last updated: Dec 13 '17
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