How can I trip an ideal switch when a short circuit fault occurs.

I am simulating a Mechanical DC circuit breaker. I used a step to put on and off. I wanted to use a "compare to constant" block so that when the fault current goes over the threshold the ideal switch can trip. The step is connected to the ideal switch so I cannot connect a relay too. Any help will be much appreciated. Thanks

[Birdman]

Can you share your Simulink model?

[MUHAMED SIDIBEH]

Yes. This is the test model i created.

[YUQI XU]

Hello sir, what paper are you using for this model? Can you share the link to this paper？

[MUHAMED SIDIBEH]

I am using a book called High Voltage Direct Current Transmission converters, systems and DC Grids 2nd edition by Dragan Jovcic. https://www.wiley.com/en-gb/High+Voltage+Direct+Current+Transmission%3A+Converters%2C+Systems+and+DC+Grids%2C+2nd+Edition-p-9781119566618.

[Rusiru Sri]

Hi,

I'm working on simulating a DC circuit breaking in Simulink and I'm still looking for a method to do that.

I really appreciate it if you could provide me any information regarding this simulation.

Thank you.

Answer 1

[Rajat Tewari]

Hello,

You can connect the relay output as the gate signal to the ideal switch and check if you are getting the expected output. Also add a powergui block to your model.

You can also refer to these links for implementing relays and circuit breakers:

1. Relays
2. Switches and Breakers

Hope it helps.