Author:
Łowczowski Krzysztof, ,Lorenc Józef,Czerniak Magdalena,Zawodniak Józef, , ,
Abstract
The paper presents issues related with detection and location of earth faults in medium voltage (MV) networks. Attention is paid on cable and cable-overhead lines. The criterion value – cable screen earthing current is presented. Afterwards, the method of utilization of the cable screen earthing current for detection and location of earth faults is described. The next part of the paper presents the results of simulation research for different variants of earth faults in cable and cable-overhead lines. The presented relations are the basis of the developed algorithm of detection and localization of earth faults. The presented considerations were confirmed by an experiment performed in the MV network.
Publisher
Lviv Polytechnic National University
Reference15 articles.
1. 1. ENERGY.2012.7.1.1 THEME (2012) Integration of Variable Distributed Resources in Distribution Networks.
2. 2. CIRED WG03 (1999) Fault Management in Electrical Distribution Systems.
3. 3. Linciks J., Baranovskis D. (2009) Single Phase Earth Fault Location in the Medium Voltage Distribution Networks. Scientific Proceeding of Riga Technical University, 25(25):13-18, doi: 10.2478/v10144-009-0002-6
4. 4. Farughian A., Kumpulainen L., Kauhaniemi K. (2019) Earth Fault Location Using Negative Sequence Currents. Energies, 12, 3759. https://doi.org/10.3390/en12193759
5. 5. Jensena C.F., Nanayakkarab O.M.K.K., Rajapakseb A.D., Gudmundsdottira U.S., Bak C.L. (2014) Online fault location on AC cables in underground Transmission systems using sheath currents. Electric Power System Research, 115, 74-79, https://doi.org/10.1016/j.epsr.2014.04.002.