Distance Protection

abrowaqas

Why Distance( Impedance) protection is always preffered in the Transmission Lines protection?

As for as Short TL is concern, Sometimes we use distance as well as differential protection, but in Medium and Long Transmission Lines only Distance protection is used .. why is it so? whats the reason behind ?

dlgoff

What's the difference between the two schemes? What element in the of differential protection scheme that isn't used in the distance scheme?

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abrowaqas	Distance Protection Tweet Why Distance( Impedance) protection is always preffered in the Transmission Lines protection? As for as Short TL is concern, Sometimes we use distance as well as differential protection, but in Medium and Long Transmission Lines only Distance protection is used .. why is it so? whats the reason behind ?

dlgoff Recognitions: Gold Member Science Advisor	What's the difference between the two schemes? What element in the of differential protection scheme that isn't used in the distance scheme?