An improved GPS current traveling-wave fault locator in EHV transmission networks using few recordings

A. Elhaffar, M. Lehtonen

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

This paper presents an improved method for estimating the fault location in electric power systems based on transient signals obtained from traveling wave recorders (TWS). These recorders are installed at few substations where traveling waves are utilized to locate faults in the transmission system using current signals only. The recorded signals are compared to a reference signal and the time delay of the first wave fronts is receded at each TWS. The minimum path for the traveling wave has been calculated using Dijkstra Algorithm to select the closest TWS recorder. The fault location is determined by accurately time-tagging the arrival of the traveling wave at monitored ends of the transmission lines and comparing the time difference to the total propagation time of the lines. The time signal is obtained via satellite from the Global Positioning System (GPS). Fault distance calculation is done using double end method and the appropriate two current traveling wave signals. Validation of fault location is carried out by the Alternative Transient Program (ATP/EMTP) simulations for a typical 400 kV power system.

Original languageEnglish
Title of host publication2005 International Conference on Future Power Systems
Volume2005
Publication statusPublished - 2005
Event2005 International Conference on Future Power Systems - Amsterdam, Netherlands
Duration: Nov 16 2005Nov 18 2005

Other

Other2005 International Conference on Future Power Systems
CountryNetherlands
CityAmsterdam
Period11/16/0511/18/05

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Keywords

  • Fault location
  • Maximum likelihood estimation
  • Modal analysis
  • Multi-ended method
  • Single phase to ground fault
  • Transmission lines
  • Travelling waves
  • Wavelet transform

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Elhaffar, A., & Lehtonen, M. (2005). An improved GPS current traveling-wave fault locator in EHV transmission networks using few recordings. In 2005 International Conference on Future Power Systems (Vol. 2005). [1600598]