Why simulation prevents costly power system errors in Simulink - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to start the simulation in Simulink.

Simulink

sim('[1]')

Drag options to blanks, or click blank then click option'

Astart_sim

Bpower_system_model

Crun_simulation

Dinit_sim

Attempts:

3 left

💡 Hint

Common Mistakes

Using function names instead of model name

Forgetting quotes around the model name

The sim function runs the Simulink model named inside the quotes. Here, the model is power_system_model.

2fill in blank

medium

Complete the code to set the simulation stop time to 10 seconds.

Simulink

set_param('[1]', 'StopTime', '[2]')

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Apower_system_model

B10

Cstart_time

Drun_time

Attempts:

3 left

💡 Hint

Common Mistakes

Using incorrect model name

Confusing parameter names

The set_param function sets the StopTime parameter of the Simulink model power_system_model to 10.

3fill in blank

hard

Fix the error in the code to load the simulation results.

Simulink

load('[1]')

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Asim_results

Boutput

Cdatafile

Dresults.mat

Attempts:

3 left

💡 Hint

Common Mistakes

Omitting the file extension

Using variable names instead of file names

The load function loads data from a file. The file name must include the extension, here results.mat.

4fill in blank

hard

Fill both blanks to create a time vector and plot voltage over time.

Simulink

time = linspace(0, [1], 1000);
plot(time, [2])

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A10

Bvoltage_signal

Ccurrent_signal

D5

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong time duration

Plotting current instead of voltage

The linspace function creates a time vector from 0 to 10 seconds. The plot function graphs voltage over time using voltage_signal.

5fill in blank

hard

Fill all three blanks to create a dictionary of error types and their costs.

Simulink

error_costs = { [1]: [2] for [3] in error_types }

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Aerr

Bcosts[err]

Cerror_types

Derrors

Attempts:

3 left

💡 Hint

Common Mistakes

Using wrong variable names

Mixing keys and values

Incorrect iterable name

This dictionary comprehension creates a mapping from each error type err in error_types to its cost in costs[err].