Detection and location of a fault point based on a travelling wa

Details Detection and location of a fault point based on a travelling wa Detection and location of a fault point based on a travelling wa

1985-06-12

1988-01-12

Krass, Errol A.

Boots, shoes, and leggings

324512, 364480, G01R 3108, G01R 1900, G06F 1531

Patent

active

047195800

ABSTRACT:
A method and a device for distance protection and location of a fault point on a transmission line based on voltage waves emitted from a measuring point towards a fault point and corresponding waves reflected from a fault point, which are included in a travelling wave model of a transmission line. At certain regular intervals, a measurement is effected of the instantaneous values of the current and the voltage at an end point of the transmission line, for example at a station. Based on these measured values, and with the aid of the travelling wave model, it is possible to calculate the voltage at a number of control points along the transmission line. If the line is energized and the calculated control voltages at two control points have different signs during a time longer than a time corresponding to normal phase difference between the two voltages, there is a fault on the line between these points. By interpolation, it is possible, based on the distance between the points in question and the calculated control voltages, to precisely locate the fault point in the case of a low resistance fault.

REFERENCES:
patent: 3244975 (1966-04-01), Bauer
patent: 3710240 (1973-01-01), Vuehnemann et al.
patent: 3878460 (1975-04-01), Nimmersjo
patent: 3931502 (1976-01-01), Vohlas
patent: 4063163 (1977-12-01), Vitins
patent: 4151459 (1979-04-01), Fayolle et al.
patent: 4314199 (1982-02-01), Yamaura et al.
patent: 4471294 (1984-09-01), Nielsen
patent: 4527113 (1985-04-01), Hillerich
patent: 4559491 (1985-12-01), Saha
patent: 4560922 (1985-12-01), Heller et al.

Affiliated with

Also associated with

Rating

Detection and location of a fault point based on a travelling wa does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Detection and location of a fault point based on a travelling wa, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Detection and location of a fault point based on a travelling wa will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-924020