Recent content by minhduc515

Can you show me how to calculate impedance from these parameters ?

Hi. I want to calculate sequence line impedance of transmission line. But i can't find any parameter of Z1 and Z0 of transmission line in simulink. It's only have parameter about number of phase, frequency, R1/R0, L1/L0, C1/C0 and line length. Can i calculate sequence line impedance from these...

I'm trying to get saturation characteristic of current transformer in simulink... In simulink, there was an example of a current transformer : https://www.mathworks.com/help/physmod/sps/examples/current-transformer-saturation.html And in this document, it said : the CT is assumed to saturate...

I'm reading this Document : https://www.mathworks.com/help/physmod/sps/examples/current-transformer-saturation.html#d117e16073 In this document, it said : "Open the CT dialog box and observe how the CT parameters are specified" How to open CT dialog box in simulink ? Thanks for your help

I'm trying to plot impedance locus of transmission line in Matlab/Simulink. I have readed some document and thay have plot result like that : I'm trying to calculate impedance when system have short - circuit fault, and plot it on R-X diagram, but i can't get their *red - dot* result like those...

1. One axis is X, the other is R 2. Z, b and a are constant

This is my polygon. a,b,Z are constants I think it's hard to find intersect between lines, so it's the reason why i don't want using coordinates to plot

Yes, i tried, but i don't want to have leftovers between two lines

I'm trying to draw a quadrilateral in matlab. I has 4 line equations. Can i draw that polygon, using line equations ? I knew MATLAB can draw polygon from coordinates, but i don't want to use it.

Hi, I'm learning Electrical engineering, and I'm trying to Simulate distance protection, using matlab/simulink I searched google and it has many documents about this problem, but those only show the result, and also i can't find any simulation file So i have many questions : 1. how to calculate...

thanks :D but i have already talked to my teacher that i'll use NAND gate create a 1hz square pulse :D I have found this site about NAND gate waveform generator, that similar to my simulation : http://www.electronics-tutorials.ws/waveforms/generators.html It said that the frequency of the square...

i'm new on creating my own circuit. And I'm trying to create a digital clock, using 74ls90+74ls47 I have problem on creating 1hz square pulse part. This is my teacher's Simulation I have searched on google that i can create 1hz pulse by using NAND gate, crystal, or Ne555, but i can't find any...