Method of measuring the distance of a fault on a line taking...

Details Method of measuring the distance of a fault on a line taking... Method of measuring the distance of a fault on a line taking...

G - Physics

01

R

324/58.03

G01R 31/08 (2006.01) H02H 3/38 (2006.01) H02H 7/26 (2006.01)

Patent

CA 1200582

ABSTRACT Method of measuring distance of a fault on a line taking account of distributed capacitances The invention concerns a method of direct measurement of a parameter characterising a fault on an electricity line 1, such as the distance x or the resistance Rd of the fault, the method being based on Ohm's Law including the line inductance L and the resistances R, Rd. The signals respectively associated with the variation of current i(t) and of voltage v(t) at the measuring point M are operated upon by transfer functions the ratio of which is equal to: (2/?) tgw?/2, ? corresponding to the propagation time of a wave over double the distance between the measuring point M and a zone boundary P. The method thus takes into account the distributed capacitances C of the line.

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