Apparatus for localization of a line fault through the use of predeterminably shiftable reference location
US4063163A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 28, 1976 |
| Grant date | Dec 13, 1977 |
| Priority date | — |
| Expiry date | May 28, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02H7/265
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An apparatus for the localization of a fault on a line wherein there is formed from at least one measurement signal derived from a line voltage and at least one measurement current derived from a line current an evaluation signal characterizing the direction and/or distance of a fault location with respect to a reference location on the line determinable by at least one regulation or adjustment magnitude, the apparatus comprising a voltage- and current measuring device provided at the measurement location and a signal processing- and evaluation circuit. The signal processing- and evaluation circuit possesses at least one reference location-adjustment input and there is provided means defining an operative connection, which changes the momentarily effective reference location adjustment, between an output of the evaluation circuit and the reference location-adjustment input.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.