psse_user_88
19 ●7 ●8 ●12

Hello, I am trying to make a script in python that reads from CSV files the load and generation values and updates the values in the PSS/E sav case for one timestamp. csv file structure for load looks like this:

node number, load MW, load Mvar 10004, 5, 5 10006, 5, 5 . . .

The status of the script is as follows:

import os
import sys

PSSE_LOCATION = r"C:\Program Files (x86)\PTI\PSSE33\PSSBIN"
sys.path.append(PSSE_LOCATION)
os.environ['PATH'] = os.environ['PATH'] + ';' + PSSE_LOCATION

import psspy
_i = psspy.getdefaultint()
_f = psspy.getdefaultreal()
_s = psspy.getdefaultchar()
psspy.psseinit(100000)
psspy.throwPsseExceptions = True

STUDY_CASE = 'C:\\path\\20220301_0030_FO1.sav'

psspy.case(STUDY_CASE)
#My updated code is below, changed identation
with open("1.csv", 'r') as file:
    reader = csv.reader(file)
    for row in reader:
        loadbus = int(row[0])
        loadid = '1'  # or loaddatalst [x], x is position of load id in row
        loadp = float(row[1])
        loadq = float(row[2])
        psspy.load_data_4(loadbus, loadid, [_i, _i, _i, _i, _i, _i], [loadp, loadq, 0, 0, 0, 0])


psspy.fnsl([0, 0, 0, 0, 0, 0, 99, 0])
psspy.area_2(0, 1, 1)
psspy.save(STUDY_CASE)
psspy.rawd_2(0, 1, [1, 1, 1, 0, 0, 0, 0], 0, r"""20220301_0030_FO1.raw""")

The part I am struggling with is defining some way of importing the CSV list in python and applying the load (MW/Mvar) in each load node.

Thank you.

to follow up after JConto answer, my code for updating load and generation in PSSE case looks like this:

#read load p and q
with open('load.csv', 'r') as file:
reader = csv.reader(file)
for row in reader:
   loadbus = int(row[0])
   loadid = '1'  # or loaddatalst [x], x is position of load id in row
   loadp = float(row[1])
   loadq = float(row[2])
   psspy.load_data_4(loadbus, loadid, [_i, _i, _i, _i, _i, _i], [loadp, loadq, 0, 0, 0, 0])

#read generators
with open('gen.csv', 'r') as file:
reader = csv.reader(file)
for row in reader:
    genbus = int(row[0])
    genid = str(row[1])  # or loaddatalst [x], x is position of load id in row
    status = int(row[2])
    genp = float(row[3])
    genq = float(row[4])
    psspy.machine_chng_2(genbus, genid, [status, _i, _i, _i, _i, _i],[genp, genq, _f, _f, _f, _f, _f, _f, _f, _f, _f, _f, _f, _f, _f, _f, _f])

edit retag flag offensive close merge delete

add a comment

import csv with open('loaddata.csv', 'r') as file: reader = csv.reader(file) for row in reader: #format=node number, load MW, load Mvar # 10004, 5, 5 #loaddatalst = row.split(',') loadbus = int(loaddatalst[0]) loadid = '1' #or loaddatalst [x], x is position of load id in row loadp = float(loaddatalst[1]) loadq = float(loaddatalst[2]) psspy.load_data_4(loadbus, loadid,[_i,_i,_i,_i,_i,_i],[loadp, loadq, 0, 0, 0, 0])

Comments

Thank you JConto, I am getting this error: Traceback (most recent call last): File "C:/path/lexon.py", line 28, in <module> for row in reader: ValueError: I/O operation on closed file Is it indentation issue?

psse_user_88 ( 2022-03-13 08:45:23 -0500 )edit

please see updated code. I am getting: loaddatalst = row.split(",") AttributeError: 'list' object has no attribute 'split'

psse_user_88 ( 2022-03-13 09:20:33 -0500 )edit

I was able to solve by removing loaddatalst. The for row loop had done the splitting already. Thank you JConto

psse_user_88 ( 2022-03-14 08:32:34 -0500 )edit

add a comment

Import load (MW/Mvar) and Generation (MW) from CSV file to PSS/E case

1 answer

Comments

Your Answer

Question Tools

Stats

Related questions