Numerical algorithm for overhead lines arcing faults detection and distance and directional protection

In this paper, an overhead lines protection numerical algorithm, based on one terminal data and derived in the time domain, is presented. The fault location, direction and its nature (arcing or arcless fault) are estimated using the least error squares technique. The faulted phase voltage is modeled...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2000-01, Vol.15 (1), p.31-37
Main Authors: Radojevic, Z.M., Terzija, V.V., Djuric, N.B.
Format: Article
Language:English
Subjects:
Algorithms
Computer simulation
Electric potential
Fault detection
Fault location
Faults
Impedance
Mathematical models
Networks
Numerical analysis
Power system faults
Power system simulation
Protection
Protective relaying
Studies
Testing
Voltage
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Summary:In this paper, an overhead lines protection numerical algorithm, based on one terminal data and derived in the time domain, is presented. The fault location, direction and its nature (arcing or arcless fault) are estimated using the least error squares technique. The faulted phase voltage is modeled as a serial connection of fault resistance and arc voltage, offering more sophisticated line protection. The algorithm can be applied for both ordinary and the high impedance faults detection, distance protection, intelligent autoreclosure, as well as for the purpose of directional relaying. The approach presented does not require the line zero sequence resistance as an input datum. The algorithm is derived for the case of the most frequent single-phase to ground unsymmetrical faults. The results of algorithm testing through computer simulation are given. The influence of remote infeed, fault resistance, higher order harmonies, power system frequency, network topology, line parameters and other factors are investigated and systematically presented. Finally, an example of real life data processing is given.
ISSN:0885-8977
1937-4208
DOI:10.1109/61.847225