Trying to understand 21 protective function
I am trying to understand the example "Case1_prot_type2.pscx (Single line using protection system)" from Relay Cases examples because I will like to use it in my simulations.
First of all, the only important part for me is the use of the 21 distance protection. I can´t understand wich values do I really need to aply in my simulations. As you can see in the image attached, the questions are:
- Do I really need a Line to Line impedance?
- In case of the need of Line to Line impedance, where are from the parameters used as "V1m, V1p, I1m, I1p"?
- Where do I have to configure the line impedance parameters (R/X)?
Any response will be heplful. Thank you!
Open Apr 04, 2017 - 03:32 AM
21 distance protection