Hello PSSE experts,
I have recently started working on PSSE and I want to know if there is a way to create a single line diagram(*.sld) file from the raw data available? Is there a python subroutine or should I have to do it manually one by one? Since its a large system, I could not do it manually. Please shed some light on this topic. Even hints for writing a script will do.
Thanks,
Hello,
I saw a question about using Python to generate a SLD recently:
The trouble is, for a large system. The automated draw routines in PSSE are not very good. They create a terrible mess. Buses and branches are everywhere, overlapping each other. It can take a full day to sort it all out.
Has anyone had experience created their own draw file with the desired bus locations and then importing that into PSSE?
Hello Jervis, Thanks for the help. But I exactly have the same concern. Automated diagram are incomprehensible and whether the diagram created outside PSSE could be imported or not. The important thing is to project a visual picture of loading and weak points in the large grid.
As for using Python + 3rd Party library. We've toyed with the idea of building something with this: http://networkx.lanl.gov/ to visualise networks. If we create an open source project would anyone else be interested in seeing the results?
@waltterval thanks, I'll start something small soon. Let's test to see what is possible. I will post the link so everyone can download the code and try it out.
I've put up the very early stages of a SLD viewer https://github.com/jtrain/psse_sld_viewer Right now it can lay out buses with distances between them set by their impedance. You'll need matplotlib, networkx and numpy (for matplotlib) to run this.
I'd prefer it as a library. Also, for those of you who haven't tried it, in version 33 of PSSE they changed the auto layout such that you can grow large areas without the old scatter gun results. Still a lot of room for improvement, but at least they're looking at it.
The SLD can be easily grown from .raw using python, I have tried the same using excel and macros Hint : use .LOC file syntax and profile coordinates where you want to place the buses
This part also can be automated, if delta X and delta Y function can be created using python. the whole sld can be grown with a single click
I spent a few days a while back trying to tackle this. A few things I learned:
UPDATE
I was browsing through the documentation and found a reference to "sliderPy" which is used to modify slider diagrams. I haven't had a chance to look at it at all, but here is something to get you started:
import psspy
import sliderPy
help(sliderPy)
Hi,
I have written such small program which can build sld file from python, here it is:
def DrawBusesSLD(buslist):
n_buses=len(buslist)
buses=[]
for i in range(n_buses):
buses.append(buslist[i][0])
for i in range(n_buses):
psspy.bsys(0,0,[0.0, 750.],0,[],1,[buses[i]],0,[],0,[])
psspy.growbus(buslist[i][0],buslist[i][1], buslist[i][2])
psspy.bsys(0,0,[0.0, 750.],0,[],n_buses,buses,0,[],0,[])
for i in range(n_buses):
psspy.growbus(buslist[i][0],buslist[i][1], buslist[i][2])
buslist=[[1000, 0, -3.4],
[1001, 1.7, -5.1],
[1002, 3.4, -5.1],
[1003, 5.1, -3.4]]
DrawBusesSLD(buslist)
Just change buslist variable to the bus numbers and corresponding x,y values.
I am not sure what problem did you get running my program, it runs on psse 32 just fine. By the way, I am using this program in connection with excel - in one excel sheet I am putting bus numbers in different cells that corresponds aproximately places where they should appear on sld diagram. Later run little excel vba code that generates buslist for the python program. Formulas for x and y coordinates are simple: x=(cell column number)x1.5 , y=-(cell raw number)x1.5 . Constants 1.5 can be different - depends what distance between buses in the diagram you need.
For some reason I can't comment. So, this is a question for @rimux When I'm running your code, the plotting of the buses works nicely. However, the x and y coordinates does not seem to work. Is this x and y coordinate the Cartesian coordinate or am I way off?
yes the x and y are the cartesian coordinate assuming 0,0 is at the center of the slider diagram
I don't know how the code written by rimux works ,GROWBUS api can only be used after you have opened saved case and here in this code no saved case file is opened ,someone please guide me because i have tried many times but the above code is not working
Sir, With the data of buses(nodes) and lines(edges) you can plot the network plot using networkx library of python.
example:
import networkx as net
buses = ["101","102","103","104","105"]
lines = [("101","102"),("102","103"), ("102","104"),("103","105") ]
G = net.Graph()
G.add_nodes_from(buses)
G.add_edges_from(lines)
net.draw(G,with_labels=True)
you will get the neat network plot without psse in python
Hi.I am the beginner of PSS'E.I want to create single line diagram using Python routine.Can you suggest me that from where should I read to get the Idea about Commands.
for studying all the python command api's you can refer at the api document at PTI/PSSE34(OR ANY)/DOC
Hi , I have recently started learning PSS/E. Can anyone please tell me how I can do the automatic contingency test in PSS/E?
Asked: 2012-10-24 20:45:01 -0600
Seen: 16,804 times
Last updated: Feb 08 '22
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