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Licensed Unlicensed Requires Authentication Published by De Gruyter September 14, 2020

Optimal fault location for power distribution systems with distributed generations using synchronized measurements

  • Wen Fan , Yuan Liao ORCID logo EMAIL logo and Ning kang


Accurate fault location in distribution systems greatly shortens maintenance time and improves reliability. This paper presents novel methods to pinpoint fault location and identify possible bad measurements for enhanced accuracy. It is assumed that network parameters and topology of the distribution network are available. The methods are applicable to a single fault as well as simultaneous faults and are applicable to both balanced and unbalanced networks. The methods utilize synchronized voltage and current phasor measurements to locate the fault. The methods are validated by simulation studies using the modified IEEE 34-Node Test System. Case studies have demonstrated that the methods are suitable for distribution systems with high penetration of distributed generations.

Corresponding author: Yuan Liao, Department of ECE, University of Kentucky, 453 F Paul Anderson Tower, Lexington, Kentucky, 40506, USA, E-mail:

Funding source: US Department of Energy

Award Identifier / Grant number: DE-AC02-06CH11357

  1. Author contribution: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: This work was partially supported by the U.S. Department of Energy, Office of Electricity Delivery and Energy Reliability, under contract DE-AC02-06CH11357.

  3. Conflict of interest statement: The authors declare no conflicts of interest regarding this article.


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Received: 2020-05-03
Accepted: 2020-08-30
Published Online: 2020-09-14

© 2020 Walter de Gruyter GmbH, Berlin/Boston

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