Research Information System
Thesis Type: Postgraduate
Institution Of The Thesis: Gazi University, Fen Bilimleri Enstitüsü, Turkey
Approval Date: 2021
Thesis Language: Turkish
Student: Aynur KOÇAK
Open Archive Collection: AVESIS Open Access Collection
Abstract:Smart grids haveemerged as an alternativeto traditional electricity grids in order to transmit electrical energy moreefficiently and safely. Anotheradvantageof the smart grids arethatthey can providebidirectional transmissionunlikethe traditional network. Today, smart grid applications takeplacein different areasof ourlives. For this reason, various malfunctionsthat may occur in smart grids should be foreseen and necessary precautionsshould be taken forthem.Smartgrids alsousepower linecommunication in addition to othercommunication technologies (ZigBee, Fiber optic). Therearedifferent faults that may occur in power linecommunication in the literature. An example of these faults is a high impedance fault. Highimpedancefaults in distribution lines can causesafety hazards, arcing events and possiblelossof equipment and lives dueto fires. However, it is very difficult to detect this faultwithconventional overcurrentrelays or fuses, as high-amplitudefaultcurrent does not occur in high impedancefaults. Inthis study, the effects of load impedancefaults that may occurincommunications madeover power lines in distribution systems with smart grid structure, distribution linelength onmain branch current and high impedancefaultcurrent areanalyzedand interpreted with different models in MATLAB/Simulink based simulations.