Hello Abubakar, I did some studies on the line voltage stability indexes. Just went through the paper on FVSI, and the paper indicates Qj as the reactive power at the receiving end of the line.
And for your second question, as the goal of the line voltage stability indices is to provide information about a particular transmission line, so it should consider the reactive power at the receiving end of the line resulting from than specific line (line i - j only and not m- j while determining FVSI for i -j) Hope my answer helps. On Tue, Nov 7, 2017 at 6:42 AM, Ahmad Sadiq Abubakar < [email protected]> wrote: > In the computation of various line voltage stability indices involving > reactive power of receiving end bus Qj, is Qj the reactive flow into bus j ? > Given FVSI = 4*(Z^2)*Qj/(Vi^2)*X ; for two buses i and j representing the > sending and receiving end, does Qj represent reactive power flow ? into bus > j or the reactive load of bus j ? > If it is the reactive load at bus j, then for a given receiving end bus > with two or more lines terminating at bus j, with sending end buses say (i > and m), what is the reactive power Qj of line i - to - j or line m - to - j? > > > Kind regards as I anticipate your answers > > > -- > > *Engr. AHMAD, Abubakar Sadiq**PhD Student* > > *Electrical Engineering.* > > *Bayero University, Kano. Nigeria.* > > *OR* > > > *LecturerElectrical and Electronics Engineering,* > > *Federal University of Technology,* > > *P.M.B, 65, Minna.* > *Nigeria*. > *+2347068043665* >
