Partial Differential Protection Scheme for Bus Bars

See the following chapter on bus protection, from GE's "The Art and Science of Protective Relaying" - do a Google search, and you can download the whole book free.

http://www.gedigitalenergy.com/multilin/notes/artsci/art12.pdf

Hi Peter,

Thanks a lot.However,my query No.2 remains unanswered.Can somebody in the forum enlighten me about such schemes which are really in use and what is their experience about their sensitivity/dependebility.

With reference to the book recommended by Peter(vide Fig. 6 at page-246),is it necessary to provide current limiting reactors in all the load circuits?In a 11 KV Distribution Substation all the feeders to remote load centre Substations are provided with current limiting reactors.However, some loads like 16 MVA,11/6.6 KV Transformers,1 MVA ,11/0.415 KV Transformers & Neutral Earthing Transformers which are installed in the same building are not provided with current limiting reactors due to space constraints.Will this affect the functioning of the partial differential protection scheme?If yes,please explain the reasons and advise a feasible cost effective solution.

Thanks in advance.

S PRADHAN