Guys:

I´m an electric engineering student and I´m trying to create a IEEE-33 distribuion line topology with simulink as shown in figure 1. Source voltage is 138Kv and transformer reduces to 13.8 Kv.

<</matlabcentral/answers/uploaded_files/27736/topology.png>>

Instead of using fixed loads, I´m using three phase dynamic load with external control as show in figure 2.

<</matlabcentral/answers/uploaded_files/27737/model.png>>

I´m facing a problem with with a very small model with three loads. Voltages and currents that are associated to these load models as show in figure 3 have strange behaviours. Results are like numeric noise. I was suspecting that the problem could be related with solve model but I tried fixed step and variable step with the same results.

<</matlabcentral/answers/uploaded_files/27738/results.png>>

Can anyone explain to me what is going on with the model and how to fix it ?

Sincerely,
Andre NudelGuys:

I´m an electric engineering student and I´m trying to create a IEEE-33 distribuion line topology with simulink as shown in figure 1. Source voltage is 138Kv and transformer reduces to 13.8 Kv.

<</matlabcentral/answers/uploaded_files/27736/topology.png>>

Instead of using fixed loads, I´m using three phase dynamic load with external control as show in figure 2.

<</matlabcentral/answers/uploaded_files/27737/model.png>>

I´m facing a problem with with a very small model with three loads. Voltages and currents that are associated to these load models as show in figure 3 have strange behaviours. Results are like numeric noise. I was suspecting that the problem could be related with solve model but I tried fixed step and variable step with the same results.

<</matlabcentral/answers/uploaded_files/27738/results.png>>

Can anyone explain to me what is going on with the model and how to fix it ?

Sincerely,
Andre Nudel Guys:

I´m an electric engineering student and I´m trying to create a IEEE-33 distribuion line topology with simulink as shown in figure 1. Source voltage is 138Kv and transformer reduces to 13.8 Kv.

<</matlabcentral/answers/uploaded_files/27736/topology.png>>

Instead of using fixed loads, I´m using three phase dynamic load with external control as show in figure 2.

<</matlabcentral/answers/uploaded_files/27737/model.png>>

I´m facing a problem with with a very small model with three loads. Voltages and currents that are associated to these load models as show in figure 3 have strange behaviours. Results are like numeric noise. I was suspecting that the problem could be related with solve model but I tried fixed step and variable step with the same results.

<</matlabcentral/answers/uploaded_files/27738/results.png>>

Can anyone explain to me what is going on with the model and how to fix it ?

Sincerely,
Andre Nudel threephasedynamicload MATLAB Answers — New Questions

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