Hello, I am working with PSSE dynamic simulation. I would like to run PSSE34 dynamic simulation using Python up to a certain time. Then, quit PSSE and do some offline calculations and then continue PSSE from where the simulation was stopped. I wonder how I should store and retrieve the dynamic states using Python. Thank you.
EDIT based on new information:
1: Put the interesting STATES into channels.
2: Initialise and define output file.
3: Run the simulation up to T1.
4: save the case and snapshot in temp files.
5: Adjust control settings and continue simulation to T2
6: Do the calculation and evaluation.
To repeat the simulation from time T1:
7: Open the case temp.sav and open the snapshot temp.snp. Change name of the output file.
8: Repeat steps 5 - 6
Thank you for the tips. I have to repeat a dynamic scenario from a system state at a specific time with modified controller, network, and loads. So, I will need to somehow store all the states and rerun the system from that instant onwards. Do you know a way to do it by any chance? Thank you.
It is an optimization problem: 1- Run a fault-clear scenario up to time T1. 2- Adjust control settings and continue simulation from T1 to T2. 3- Collect states time series form T1 to T2 and calculate cost function. 3- Evaluate cost function and return to Step 2.
So, I need to start from T1 and repeat to avoid running the entire simulation again. Thank you.
Can you also please let me know how to open Case and Snap files? Is it : - psspy.case(savefile) - psspy.rstr(snapfile) ?
If the computation time from t=0 to T1 isn't very long, I would run the simulation from scratch (from t=0). Saving the workspace increases the risk of inadvertently saving some undesired setting, parameter, or state.
Thank you for the comment. Unfortunately, going back to t=0 is not efficient.
Thank you for the tips. I have to repeat a dynamic scenario from a system state at a specific time with modified controller, network, and loads. So, I will need to somehow store all the states and rerun the system from that instant onwards. Do you know a way to do it by any chance? Thank you.
Asked: 2023-10-09 02:14:28 -0500
Seen: 197 times
Last updated: Oct 11 '23
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