How to create random step signal?

Doing Project on Deregulation with random variable load ... need step load perturbation block can you please help me to create it

Answer 1

[Kaustav Bhattacharya]

To create a random step signal, you can write an infinite loop within which : generate a random value (within your limits) use that as the signal, use the pause command to stop for a specific interval after which you want the signal to change.

while

% generate random number

pause(1) %pauses for 1 ses

end