Method and apparatus for locating a fault on a line

Details Method and apparatus for locating a fault on a line Method and apparatus for locating a fault on a line

G - Physics

01

R

324/58.03

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

Patent

CA 1063174

INVENTOR: OTTO LANZ INVENTION: METHOD AND APPARATUS FOR LOCATING A FAULT ON A LINE ABSTRACT OF THE DISCLOSURE A method of, and apparatus for, locating a fault on a line, wherein current and voltage signals weighted relative to one another are formed from measurement signals corresponding to the line current and line voltage at a measurement location and after superimposing are used for a phase detection. At least one of the current signals or voltage signals is multiplied by a weighting factor at least approximately devoid of phase shift. From mutual relatively weighted current- and voltage signals there is determined the phase angle of a sinusoidal component of at least one auxiliary signal -- corresponding to the sum or difference of a respective pair of mutually relatively weighted measurement currents and measurement voltages -- in relation to a reference phase position which can be correlated to a reference location at the line. -1-

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