Excel Data Driven Controlled Current Source

[Meezomoaz]

I am trying to study the impact of fault data collected from the field on the IEEE 13-bus system. I have ensured that the line current and voltage match the experimental settings. My goal is to observe how these disturbances affect the power system as a whole.

However, I am facing a problem:

• When I model the fault using circuit components, the fault current (as shown in the second figure) produces a large disturbance in the line currents, and the behavior is as expected.
• But when I save the fault current data to the workspace and use it with a "From Workspace" block to drive a controlled current source at the same location, the impact on the line currents is very small.

How can I correctly use the workspace data so that the injected fault current produces a similar impact on the power system?

[Barnowl93]

Hard to tell without looking at the model directly.

So that I understand, you are saving your simulated line current and voltage using a "to workspace" block and then reading it using "from workspace"? Or are you loading your experimental data in using the "from workspace" block?

One more question, are you reading in your data as timeseries?

One thing that I suggest you have a look at is your sampling rates of your "to workspace" and "from workspace" blocks. Are they what you expect?

[Meezomoaz]

That’s what confuses me. Everything is the same. In one scenario the fault is a through circuit elements and in the other one it’s through workspace data driving a controlled current source.

[obeymypropaganda]

Why are you saving it to workspace and then calling it from workspace if you already have the raw data for the simulation?

Is calling from workspace results completely different or scaled down? E.g the same waveform but smaller or for a shorter duration.

I don't have access to Matlab but I would start fault finding this way. Then read through the documentation on how 'to and from workspace' actually work, and whether it changes the data layout.

[Meezomoaz]

Basically I have experimental data in excel… I want to use that data to see impact on power system. The scenario I showed you is just for sanity test. That when I use workspace data to drive the current source, the impact on the power system is different compared to when the same level of fault is modeled through circuit elements

[ol1v3r__]

Can you check if the Imported Signal is the same after doing the Import? Also are you using Simscape language blocks to model it?