Method for fault location in uncompensated power lines with two-end unsynchronized measurement
US8207743B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 23, 2008 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Mar 31, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R31/088
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method is provided for fault location in uncompensated power lines with two-end unsynchronized measurement, finding an application in the power industry and for overhead and overhead-cable transmission or distribution lines. The method according to the invention includes measuring the voltage and currents at both ends (A) and (B) of the section, obtaining the phasor of the positive sequence voltages (VA1, VB1) measured at the ends (A) and (B), respectively, obtaining the phasor of the positive sequence currents (IA1, IB1) measured at the ends (A) and (B), respectively, determining whether there is a three-phase balanced fault, and using either a first subroutine or a second subroutine (depending on whether or not there is a fault), determining a distance (d) to the fault.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.