Mobile QR Code QR CODE : The Transactions of the Korean Institute of Electrical Engineers
Title A Study on the Optimal Setting Method for Directional Over-current Relay according to Distribution System Topology Change
Authors 송진솔(Jin-Sol Song) ; 김지수(Ji-Soo Kim) ; 신광수(Gwang-Su Shin) ; 김호영(Ho-young Kim) ; 김철환(Chul-Hwan Kim)
DOI https://doi.org/10.5370/KIEE.2021.70.6.860
Page pp.860-866
ISSN 1975-8359
Keywords Adaptive Protection; Clustering Method; Directional Overcurrent Relay; Optimization Algorithm; Protection Coordination Problem
Abstract In modern power systems, there is a possibility that the power system topology may change due to the trip of power lines or distributed generations due to maintenance or fault. Since changes in the topology of the power system affect the magnitude and flow of the fault current, the optimally calculated setting values with the original topology may not provide the correct protection coordination. Therefore, protection method considering the change of topology is required, and in this paper, three protection methods, Protection method with fixed setting values, Adaptive protection method, Protection method with clustering, are introduced.
At last, three protection methods are compared with 30 Directional OverCurrent Relays (DOCRs) in IEEE 30 bus test system.