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

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4 Author(s)
J. Izykowski ; Wroclaw Univ. of Technol., Poland ; R. Molag ; E. Rosolowski ; M. M. Saha

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.

Published in:

IEEE Transactions on Power Delivery  (Volume:21 ,  Issue: 2 )