Good afternoon everyone, I am performing a protection coordination analysis, between fuses and recloser, I want to simulate a single-phase fault with a fault resistance of 40 ohms, is it possible to do it in OpenDSS-G or do I have to do it from the OpenDSS console?
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
I'm assuming you want to do a fault study at many buses.
The fault definition for a 40-ohm fault would be something like this
New Fault.F1 phases=1 Bus1=myBus.1 R=40
Put a Monitor on the Fault to capture the current. if you are driving OpenDSS with the COM interface you can use your program to capture the fault currents..
New Monitor.F1 Fault.F1 1
After defining it like this, you can move the fault like this.
Fault.F1.Bus1=AnotherBus.1
Solve
Sample ! capture the result with the Monitor
Fault.F1.Bus1=ThirdBus.1
Solve
Sample ! capture the result with the Monitor
...
Save ! close the Monitor
You generally don't want more than one fault active at a time. I will make a list of node names with Export NodeNames. Then use a good text editor to create a script file for putting the fault at the nodes you want and execute it with the Redirect Command. You can do this from OpenDSS-G as well as other forms of OpenDSS.
There may be a more elegant way to do this in OpenDSS-G, but I'll let Davis supply the answer.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Gracias Roger y Davis, con sus indicaciones logre simular la falla con una
impedancia de falla y ver el efecto en un fusible, les adjunto una imagen
de los resultados.
I'm assuming you want to do a fault study at many buses.
The fault definition for a 40-ohm fault would be something like this
New Fault.F1 phases=1 Bus1=myBus.1 R=40
Put a Monitor on the Fault to capture the current. if you are driving
OpenDSS with the COM interface you can use your program to capture the
fault currents..
New Monitor.F1 Fault.F1 1
After defining it like this, you can move the fault like this.
Fault.F1.Bus1=AnotherBus.1
Solve
Sample ! capture the result with the Monitor
Fault.F1.Bus1=ThirdBus.1
Solve
Sample ! capture the result with the Monitor
...
Save ! close the Monitor
You generally don't want more than one fault active at a time. I will make
a list of node names with Export NodeNames. Then use a good text editor to
create a script file for putting the fault at the nodes you want and
execute it with the Redirect Command. You can do this from OpenDSS-G as
well as other forms of OpenDSS.
There may be a more elegant way to do this in OpenDSS-G, but I'll let
Davis supply the answer.
Good morning, a query, how can I simulate transient faults, that is, that have a specific duration, to verify the operation of a recloser and a fuse? and what kind of simulation should I do?
Best regards
Juan Carlos
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
At 15:20 you will find the procedure for incorporating faults and see the recloser tripping in time. But if what you want to see is EMT, in that case OpenDSS cannot do that. What we can do is to simulate electromechanical transients in dynamic mode, including generators, but that's not EMT.
Best regards
Davis
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Good afternoon everyone, I am performing a protection coordination analysis, between fuses and recloser, I want to simulate a single-phase fault with a fault resistance of 40 ohms, is it possible to do it in OpenDSS-G or do I have to do it from the OpenDSS console?
Hi Juan,
Check this out:
https://www.youtube.com/watch?v=TEjmFr-MEDA
https://www.youtube.com/watch?v=VZkJCyW-G8k
https://www.youtube.com/watch?v=LTOeUUa1vxM
Best regards
Davis
I'm assuming you want to do a fault study at many buses.
The fault definition for a 40-ohm fault would be something like this
New Fault.F1 phases=1 Bus1=myBus.1 R=40
Put a Monitor on the Fault to capture the current. if you are driving OpenDSS with the COM interface you can use your program to capture the fault currents..
New Monitor.F1 Fault.F1 1
After defining it like this, you can move the fault like this.
Fault.F1.Bus1=AnotherBus.1
Solve
Sample ! capture the result with the Monitor
Fault.F1.Bus1=ThirdBus.1
Solve
Sample ! capture the result with the Monitor
...
Save ! close the Monitor
You generally don't want more than one fault active at a time. I will make a list of node names with Export NodeNames. Then use a good text editor to create a script file for putting the fault at the nodes you want and execute it with the Redirect Command. You can do this from OpenDSS-G as well as other forms of OpenDSS.
There may be a more elegant way to do this in OpenDSS-G, but I'll let Davis supply the answer.
Gracias Roger y Davis, con sus indicaciones logre simular la falla con una
impedancia de falla y ver el efecto en un fusible, les adjunto una imagen
de los resultados.
Atentamente,
Juan Carlos
El mar., 11 ago. 2020 a las 20:49, Roger Dugan ( rdugan@users.sourceforge.net) escribió:
Good morning, a query, how can I simulate transient faults, that is, that have a specific duration, to verify the operation of a recloser and a fuse? and what kind of simulation should I do?
Best regards
Juan Carlos
Hello,
In this video:
https://www.youtube.com/watch?v=LTOeUUa1vxM
At 15:20 you will find the procedure for incorporating faults and see the recloser tripping in time. But if what you want to see is EMT, in that case OpenDSS cannot do that. What we can do is to simulate electromechanical transients in dynamic mode, including generators, but that's not EMT.
Best regards
Davis