An adaptive fault locator system for transmission lines
Resource
Power Engineering Society Summer Meeting, 1999. IEEE
Journal
1999 IEEE Power Engineering Society Summer Meeting, PES 1999 - Conference Proceedings
Journal Volume
2
Pages
930 - 936
Date Issued
1999-07
Date
1999-07
Author(s)
DOI
N/A
Abstract
This paper presents an adaptive fault locator system which utilizes two-terminal Global Positioning System (GPS) based synchronized phasor measurements for on-line estimation of line parameters in steady-state and calculation of fault location in the occurrence of faults. Uncertainty about the line parameters, which usually results in a significant error in the calculated fault location, can be resolved in the proposed parameter estimation algorithm. A novel fault location index in terms of Clarke components of the synchronized voltage and current phasors is also proposed to calculate the fault location in the accuracy of up to 99.9%. This paper also proposes a new discrete Fourier transform (termed as smart discrete Fourier transform, SDFT) based algorithm to eliminate system noise and measurement errors. The field tests of two GPS based phasor measurement prototypes demonstrate that a synchronization error between two remotely spaced prototypes is small enough for a fault locator. The performance of the parameter estimation algorithm and index is illustrated with simulation results from EMTP. ? 1999 IEEE.
Event(s)
1999 IEEE Power Engineering Society Summer Meeting, PES 1999
Subjects
Discrete Fourier Transforms (DFT); Fault DetectiodLocation Index; Parameter Estimation Algorithm; Phasor Measurement Unit (PMU)
Other Subjects
Discrete Fourier transforms; Errors; Global positioning system; Location; Phase measurement; Phasor measurement units; Synchronization; Units of measurement; Current phasors; Fault locator; Line parameters; On-line estimation; Parameter estimation algorithm; Synchronization error; Synchronized phasor measurements; Two terminals; Parameter estimation
Type
conference paper
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