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Open AccessArticle

Earth Fault Location Using Negative Sequence Currents

School of Technology and Innovations, University of Vaasa, 6500 Vaasa, Finland
Author to whom correspondence should be addressed.
Energies 2019, 12(19), 3759;
Received: 27 August 2019 / Revised: 24 September 2019 / Accepted: 27 September 2019 / Published: 30 September 2019
In this paper, a new method for locating single-phase earth faults on non-effectively earthed medium voltage distribution networks is proposed. The method requires only current measurements and is based on the analysis of the negative sequence components of the currents measured at secondary substations along medium voltage (MV) distribution feeders. The theory behind the proposed method is discussed in depth. The proposed method is examined by simulations, which are carried out for different types of networks. The results validate the effectiveness of the method in locating single-phase earth faults. In addition, some aspects of practical implementation are discussed. A brief comparative analysis is conducted between the behaviors of negative and zero sequence currents along a faulty feeder. The results reveal a considerably higher stability level of the negative sequence current over that of the zero sequence current. View Full-Text
Keywords: sequence components; earth fault location; negative sequence current sequence components; earth fault location; negative sequence current
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MDPI and ACS Style

Farughian, A.; Kumpulainen, L.; Kauhaniemi, K. Earth Fault Location Using Negative Sequence Currents. Energies 2019, 12, 3759.

AMA Style

Farughian A, Kumpulainen L, Kauhaniemi K. Earth Fault Location Using Negative Sequence Currents. Energies. 2019; 12(19):3759.

Chicago/Turabian Style

Farughian, Amir; Kumpulainen, Lauri; Kauhaniemi, Kimmo. 2019. "Earth Fault Location Using Negative Sequence Currents" Energies 12, no. 19: 3759.

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