tato_343's profile - activity

Yes, indeed.

Hello @perolofl, thanks for the answer. Yes, DIST_BUS_FAULT_2 is included into PSSE v 33.5! In the documentation for v35 it says that it was included since v34, but it is in v33.5. So, do you recommend me to use DIST_BUS_FAULT_2 instead of SCMU or SPCB faults?

Hello all!

I want to run a dynamic simulation using a single-phase to-ground fault. In the.sav I have all the correspondent information, including the negative and zero sequence parameters for the lines, etc...

I see that routine SPCB can determine the resulting pi model after an unbalanced fault for later be used for dynamic simulations. However, it has the part that they transform FACTS devices into constant admittance models. Also, I see that in version 33.5 it is possible to use the function distbusfault_2, which can also simulate unbalanced faults in buses and does not say anything regarding the simplification of FACTS devices models (or at least not explicitly).

So, I wanted to ask you, is there a difference between the two functions? Am I missing something?

Hello all,

Since the psspy function PVengine6 doesn't work for me, I decided to create a script to make the PV analysis. But first, I wanted to ask something related to the type of busbar in the source and sink subsystem.

Most of the theoretical examples I see in books formulate the PV equations for a system with a generator and a load. But for more complex systems, I don't see any description of the details of the procedure to obtain the famous PV curves. I know that the first step is to define the source and the sink subsystems and that the power flows from the source to the sink. But internally, how does it work? I assume that all the plants on the sink subsystem don't increase their power generation through the process (they are converted from PV to PQ buses), while the plants on the source subsystem are treated as PV buses, or am I wrong?

Thanks!

Update:

Still I'm having the same problem with psse 33.5, but I found something interesting. When I simulate it in python, the command: pssarrays.pv_summary('insert pv file path').nmvbus is equal to 0, despite in the .mon file I have the following commands:

COM
COM MONITORED element file entry created by PSS(R)E Config File Builder
COM
MONITOR VOLTAGE RANGE ALL BUSES 0,900 1,100
MONITOR VOLTAGE DEVIATION ALL BUSES 0,030 0,060
MONITOR BRANCHES IN SUBSYSTEM 'SISTEMA'
MONITOR TIES FROM SUBSYSTEM 'SISTEMA'
END

I have correctly uploaded to the dfx file. Why it still doesn't work?

Hello all,

I am running the same test case (savnw) in different versions of PSSE: 33.5 and 35.3. Despite I'm running the same case, the type of results that I'm having in the older versions is not the same for the newest.

For Version 33.5 I'm having only "Branch MVA flow" and the others disabled. For 35.3 I have: "Bus Voltages", "Generator MW" and "Branch MVA flow". Do you know what the problem can be or is it a matter of versions?