Accurate location of evolving faults on transmission lines using sparse wide area measurements

Xiangqing Jiao, Yuan Liao

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


In electric power systems, not all fault conditions remain unchanged during faults. An evolving fault has one characteristic initially and changes to a different condition subsequently. Locating evolving faults is challenging due to the change in fault type shortly after the fault initiation. This paper presents a new approach for estimating the locations of evolving faults on transmission lines. By using sparse wide area voltage measurements, this method is able to accurately locate evolving faults without requiring measurements from either end of the faulted line. There is no need to detect whether a fault is an evolving fault or not. Fault type information is not a necessity either, and the change of fault phases does not affect the estimation accuracy. In addition, the algorithm is applicable to both single-circuit and double-circuit lines, and the transmission lines can be either transposed or untransposed. Distributed parameter line model is adopted to fully consider the shunt capacitances of the transmission lines. Electromagnetic Transient Program (EMTP) is employed to simulate transmission system, and quite accurate results have been achieved.

Original languageEnglish
Article number2017-0244
JournalInternational Journal of Emerging Electric Power Systems
Issue number1
StatePublished - 2018

Bibliographical note

Publisher Copyright:
© 2018 Walter de Gruyter GmbH, Berlin/Boston.


  • Evolving fault
  • Fault location
  • Wide-area measurement

ASJC Scopus subject areas

  • Energy Engineering and Power Technology


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