Accurate Noniterative Fault Location Algorithm Utilizing Two-End Unsynchronized Measurements

This paper presents a new two-terminal impedance-based fault location algorithm, which takes into account the distributed parameter line model. The algorithm utilizes unsynchronized measurements of voltages and currents from two ends of a line and is formulated in terms of the fundamental frequency...

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Bibliographic Details
Published in:IEEE transactions on power delivery 2010-01, Vol.25 (1), p.72-80
Main Authors: Izykowski, J., Rosolowski, E., Balcerek, P., Fulczyk, M., Saha, M.M.
Format: Article
Language:English
Subjects:
Algorithms
Applied sciences
Current measurement
digital measurements
Electrical engineering. Electrical power engineering
Electrical power engineering
Exact sciences and technology
Fault location
Faults
Frequency measurement
Frequency synchronization
Impedance
Mathematical models
Miscellaneous
Operators
Performance analysis
Performance evaluation
Power networks and lines
power transmission lines
simulation
Synchronism
Synchronization
Testing
Testing. Reliability. Quality control
Transmission line measurements
Voltage
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Summary:This paper presents a new two-terminal impedance-based fault location algorithm, which takes into account the distributed parameter line model. The algorithm utilizes unsynchronized measurements of voltages and currents from two ends of a line and is formulated in terms of the fundamental frequency phasors of symmetrical components of the measured signals. First, an analytical synchronization of the unsynchronized measurements is performed with use of the determined synchronization operator. Then, the distance to fault is calculated as for the synchronized measurements. Simultaneous usage of two kinds of symmetrical components for determining the synchronization operator makes that the calculations are simple, noniterative and at the same time highly accurate. The developed fault location algorithm has been thoroughly tested using signals of ATP-EMTP versatile simulations of faults on a transmission line. The presented evaluation shows the validity of the developed fault location algorithm and its high accuracy.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2009.2035222