Synchronized Measurements-Based Algorithm for Short Transmission Line Fault Analysis

Vladimir Terzija, Gary Preston, Vladimir Stanojević, Nagy I. Elkalashy, Marjan Popov

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

A new numerical algorithm for the analysis of single line to ground faults on short overhead transmission lines is presented in this paper. It is based upon synchronized sampling at two line ports, and an accurate fault model including the arcing phenomena and tower footing resistance at the fault point. The core of the algorithm is an efficient nonrecursive parameter estimation method. A dynamic arc model is included in the fault model to represent the arc's interaction with the external power network. The algorithm accurately estimates the arc voltage amplitude, tower footing resistance, and the fault location, simultaneously. The algorithm is derived in the time domain, and is based on the synchronized acquisition of currents and voltages at both line terminals. Case studies based on simulated data are presented to demonstrate the effectiveness of the new method. In particular, the sensitivity of the proposed algorithm to synchronization errors, harmonics, line capacitance, and fault resistance were explored with lumped, distributed, transposed, and untransposed line models.

Original languageEnglish
Article number7128745
Pages (from-to)2639-2648
Number of pages10
JournalIEEE Transactions on Smart Grid
Volume6
Issue number6
DOIs
Publication statusPublished - Nov 2015
Externally publishedYes

Keywords

  • Auto-reclosure
  • electrical arc
  • fault analysis
  • numerical protection
  • parameter estimation
  • synchronized sampling

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