Real-Time Traveling-Wave-Based Fault Location Using Two-Terminal Unsynchronized Data

In this paper, a new two-terminal traveling-wave-based fault-location algorithm is proposed. Its main advantage over similar two-terminal algorithms lies in the fact it does not require the data from both line terminals to be synchronized. In order to do so, the algorithm is applied in real time, and a communication system is used, whose data-transmission latency is taken into account in the proposed formulation. The fault locator routines were implemented using the real-time digital simulator (RTDS), such that a wide variety of fault scenarios in a 230-kV transmission line 200 km long was evaluated in real time, considering communication systems with different latency variability levels. The obtained results indicate the proposed algorithm is able to locate faults using either synchronized or unsynchronized two-terminal data, whereas classical methods work properly for synchronized measurements only.

[1]  A. M. Mousa,et al.  GPS travelling wave fault locator systems: investigation into the anomalous measurements related to lightning strikes , 1996 .

[2]  T. Takagi,et al.  Development of a New Type Fault Locator Using the One-Terminal Voltage and Current Data , 1982, IEEE Power Engineering Review.

[3]  Normann Fischer,et al.  Modern line current differential protection solutions , 2010, 2010 63rd Annual Conference for Protective Relay Engineers.

[4]  Cuong P. Nguyen,et al.  Modeling of communication latency in smart grid , 2011, 2011 IEEE Power and Energy Society General Meeting.

[5]  M. S. Sachdev,et al.  A technique for estimating transmission line fault locations from digital impedance relay measurements , 1988 .

[6]  Aaas News,et al.  Book Reviews , 1893, Buffalo Medical and Surgical Journal.

[7]  Dimitri P. Bertsekas,et al.  Data Networks , 1986 .

[8]  P. A. Crossley,et al.  Fault location based on travelling waves , 1993 .

[9]  S. L. Zimath,et al.  Comparison of impedance and travelling wave fault location using real faults , 2010, IEEE PES T&D 2010.

[10]  L. V. Bewley,et al.  Traveling Waves on Transmission Systems , 1931, Transactions of the American Institute of Electrical Engineers.

[11]  A.L. Dalcastagne,et al.  A study about the sources of error of impedance-based fault location methods , 2008, 2008 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America.

[12]  David J. Lilja,et al.  Measuring computer performance : A practitioner's guide , 2000 .

[13]  W. Marsden.  I and J , 2012 .

[14]  J. Izykowski,et al.  Accurate location of faults on power transmission lines with use of two-end unsynchronized measurements , 2006, IEEE Transactions on Power Delivery.

[15]  D. J. Marihart,et al.  Fault Location Methods for Overhead Lines , 1957, Transactions of the American Institute of Electrical Engineers. Part III: Power Apparatus and Systems.

[16]  Eugeniusz Rosolowski,et al.  Fault Location on Power Networks , 2009 .

[17]  B. J. Cory,et al.  Satellites for power system applications , 1993 .

[18]  Chi-Shan Yu.  An Unsynchronized Measurements Correction Method for Two-Terminal Fault-Location Problems , 2010, IEEE Transactions on Power Delivery.

[19]  A. T. Johns,et al.  Accurate fault location technique for power transmission lines , 1990 .

[20]  F. B. Costa,et al.  Effects of the fault inception angle in fault-induced transients , 2012 .

[21]  D. Spoor,et al.  Improved single-ended traveling-wave fault-location algorithm based on experience with conventional substation transducers , 2006, IEEE Transactions on Power Delivery.

[22]  F. V. Lopes,et al.  A Traveling-Wave Detection Method Based on Park's Transformation for Fault Locators , 2013, IEEE Transactions on Power Delivery.

[23]  Mladen Kezunovic,et al.  Automated transmission line fault analysis using synchronized sampling at two ends , 1995 .

[24]  James S. Thorp,et al.  Computer Relaying for Power Systems , 2009 .

[25]  Adly A. Girgis,et al.  A new fault location technique for two- and three-terminal lines , 1992 .

[26]  Paul M. Anderson.  Power System Protection , 1998 .

[27]  J. Izykowski,et al.  ATP-EMTP investigation of a new algorithm for locating faults on power transmission lines with use of two-end unsynchronized measurements , 2007 .