Suggest some softwares to plot R-X diagram of distance relay characteristics with Zone specifications,i.e specifying Zone1,Zone2 and zone 3.Whether they are available online and how to do it also.
Dear Roy, yes there are two, I know DIGSILENT from Germanijum and CAPE from USA. I can Sent you a paper About modelling distance protection in DIgSILENT PowerFactory software?
I will check again on faculty, There was one free for dow,loading . These two are not free but can be download educational version of DIgSILENT. Here is a paper
Look up the paper on "On Power System Controlled Separation" diagrams 8 through 15 on distance relay performance. The paper is included in "Technical Paper Compendium - Power System Restoratio Dynamoc (Issues, etc,...". The Compendium is free for PES members. M. M. Adibi