Cable parameters in Matlab simulink

I have a simulation in Simulink of a power plant. The generator is connected to the AVR block. The line connecting the generator with the AVR has parameters that can affect the result, which is why I need to include these parameters of the cable, such as the cable width, material, etc. How can I do this in MATLAB Simulink?

[Umar]

Hi Daniel, In MATLAB Simulink, you can model the cable parameters by using the Transmission Line block. This block allows you to specify parameters such as resistance, inductance, capacitance, and conductance of the cable. By adjusting these parameters based on the cable width, material, and other characteristics, you can accurately simulate the behavior of the cable in your power plant model.

For more information, please refer to https://www.mathworks.com/help/simrf/ref/equivalentbasebandtransmissionline.html#

Hope this will help resolve your issue.

[Dani]

Dear Umar,

Thank you for your answer. I cannot connect Transmission Line block to my AVR (it's not possible in Simulink).

[Umar]

Hi Daniel,

Sorry to hear that. However, there is one effective solution to use a Signal Selector block to extract the necessary signals from the Transmission Line block and then feed them into the AVR block. So, first, create the Signal Selector Block.

Signal_Selector = Simulink.BlockDiagram.add_block('built-in/Signal Selector', 'YourModel/Signal Selector');

Then, connect the Transmission Line Output.

Simulink.BlockDiagram.add_line('YourModel', 'TransmissionLine/Output', 'Signal Selector/1');

Finally, connect the Signal Selector Output.

Simulink.BlockDiagram.add_line('YourModel', 'Signal Selector/1', 'AVR/1');

[Dani]

Dear Umar, thanks a lot for the solution.

However, could you please explain more deeply and step wise what to do?

Thanks in advance!

Answer 1

[Umar]

Hi Dani,

You asked, could you please explain more deeply and step wise what to do?

Answer: To achieve the desired functionality of extracting signals from a Transmission Line block and feeding them into an AVR block in Matlab, we need to follow a step-by-step process. I will break it down into detailed steps:

Step 1: Signal Selector Block Setup

Add Signal Selector Block: Start by adding a Signal Selector block to your Simulink model.

Configure Signal Selector Block: Configure the Signal Selector block to select the necessary signals from the Transmission Line block. This can be done by specifying the input signals and the corresponding output ports.

Step 2: Transmission Line Block Configuration

Add Transmission Line Block: Ensure that you have a Transmission Line block in your Simulink model.

Define Input Signals: Make sure that the Transmission Line block has the required input signals that you want to extract using the Signal Selector block.

Step 3: Connection Setup

Connect Signal Selector to Transmission Line: Establish a connection between the Signal Selector block and the Transmission Line block. This connection will allow the Signal Selector block to extract signals from the Transmission Line block.

Connect Signal Selector to AVR Block: After configuring the Signal Selector block, connect its output to the input of the AVR block. This step ensures that the extracted signals are fed into the AVR block for further processing.

Step 4: Simulation and Validation

Run Simulation: Run the simulation of your model to observe how the signals are extracted from the Transmission Line block and fed into the AVR block.

Verify Results: Verify that the signals reaching the AVR block are the ones you intended to extract from the Transmission Line block.

By following these detailed steps, you can effectively use a Signal Selector block to extract signals from a Transmission Line block and then feed them into an AVR block in Matlab. This process ensures that the signals are correctly routed and processed within your Simulink model.