Process and device for determining a parameter associated with a

Details Process and device for determining a parameter associated with a Process and device for determining a parameter associated with a

1984-06-07

1986-12-02

Krawczewicz, Stanley T.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

G01R 3108

Patent

active

046267727

ABSTRACT:
Method and apparatus for determining, at a measurement point in a faulty conductor of electrical energy, a fault parameter such as the distance between the point of measurement and such fault or the direction of such fault. As a signal of a fault current, the device utilizes a signal I.sub.pa formed by a linear combination of a signal representative of homopolar current and a signal representative of an inverse current associated with a fault. The invention is particularly applicable in the case of networks having at the point of measurement an insensitivity to homopolar current or to inverse current.

REFERENCES:
patent: 3369156 (1968-02-01), Souillard
patent: 3593124 (1971-07-01), Souillard et al.
patent: 3612989 (1971-10-01), Souillard et al.
patent: 3800215 (1974-03-01), Souillard
patent: 4063163 (1977-12-01), Vitins
patent: 4063164 (1977-12-01), Lanz et al.
patent: 4063166 (1977-12-01), Glavitsch et al.
patent: 4251766 (1981-02-01), Souillard et al.

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