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How can i plot short circuit current Iccafter performing dynamic simulation ?

asked 2022-03-09 06:56:26 -0600

anonymous user


I am currently using the PSS/E 33.4 version and i am simulating the IEEE 9 bus system i want to visualise the short circuit current after dynamic simulation.

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answered 2022-03-15 14:05:36 -0600

perolofl gravatar image

The problem here is that PSSE doesn't have any channel for fault current monitoring, or not even to plot a branch current.

However, the fault current can be plotted with the following method:

  1. Split the faulted bus, in my example bus 154 in savnw network is split and a zero impedance line (ZIL) is inserted to the new bus 254.

  2. Add a branch-MVA channel for the line between bus 154 and 254. Add a bus voltage channel for bus 154.

  3. Perform a dynamic simulation and apply the fault at the new bus, 254. The total fault current will then go through the branch from bus 154 to 254.

After simulation, use a formula to plot the following: branchMVA / (Vpu*Vbase) / sqrt(3). In the following example the fault is applied at time = 0.5 and cleared at time = 0.6 s. The curve shows the bus fault current, i,e, the current flowing through line 154 - 254.

image description

The inital fault current is above 16.5 kA and the current declines during the fault to about 13 kA.

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answered 2022-03-10 15:16:47 -0600

jconto gravatar image

A set of channels (a.k.a study variables) can be plotted within the PSSe GUI after opening an OUT file. The plotting features are still crude but its drag-and-drop feature is very useful. You can also use PSSPLT, a tool in the PSSe installation to do plotting. Check its manual and search for it on this forum. A channel data can be exported to excel and be plotted there. Check for "channel export" in the forum.

A python script to do plotting using the module dyntools (part of PSSe installation) is an option. Check the demo code '' available in the folder 'example', part of the PSSe installation.

About the case IEEE9bus system, search the forum for "Does anyone have IEEE 9 and IEEE39 dyr files?" where a link will take you to my public google site. The updated IEEE9bus system contains scripts to run fault runs (with composite load models) and simple script-driven plotting. You may check "", my other tool for plotting.

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Asked: 2022-03-09 06:56:26 -0600

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Last updated: Mar 15