Accurate location of faults on power transmission lines with use of two-end unsynchronized measurements

This paper presents a new algorithm for locating faults on two-terminal power transmission lines. Unsynchronized two-end voltages and currents are processed for determining the sought distance to fault and the synchronization angle. The calculations are performed initially for the lumped model of a...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2006-04, Vol.21 (2), p.627-633
Main Authors: Izykowski, J., Molag, R., Rosolowski, E., Saha, M.M.
Format: Article
Language:English
Subjects:
Algorithms
Applied sciences
ATP-EMTP
Circuit faults
Current transformers
Disturbances. Regulation. Protection
Electric potential
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Fault currents
Fault location
Faults
Impedance
Mathematical models
Phase measurement
Power measurement
Power networks and lines
Power transmission lines
simulation
Synchronization
transmission line
Transmission line measurements
two-end unsynchronized phasor measurement
Voltage
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Summary:This paper presents a new algorithm for locating faults on two-terminal power transmission lines. Unsynchronized two-end voltages and currents are processed for determining the sought distance to fault and the synchronization angle. The calculations are performed initially for the lumped model of a transmission line. Then, these results are used as the initial data for the Newton-Raphson method-based iterative calculations, in which the distributed parameter line model is utilized. The delivered fault location algorithm has been tested and evaluated with the fault data obtained from versatile ATP-EMTP simulations. The sample results of the evaluation are reported and discussed.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2005.858778