NDLI: IEC 61850-Based Centralized Protection against Single Line-to-Ground Faults in Ungrounded Distribution Systems

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IEC 61850-Based Centralized Protection against Single Line-to-Ground Faults in Ungrounded Distribution Systems

Content Provider	MDPI
Author	Nam, Soon-Ryul Ko, Woong-Hie Key, Sopheap Kang, Sang-Hee Lee, Nam-Ho
Copyright Year	2021
Description	We developed an International Electrotechnical Commission (IEC) 61850-based centralized protection scheme to prevent single line-to-ground (SLG) faults in the feeders and busbars of ungrounded distribution systems. Each feeder intelligent electronic device (IED) measures its zero-sequence current and voltage signals and periodically transmits zero-sequence phasors to a central IED via a Generic Oriented Object Substation Event message. Using the zero-sequence phasors, the central IED detects SLG faults in feeders and busbars. To achieve centralized protection, angle differences between the zero-sequence currents and voltage phasors are exploited, and their calculation compensates for data desynchronization. The feeder IEDs were implemented using the MMS-EASE Lite library, while the transmitted zero-sequence phasors were calculated based on fault signals simulated by Power System Computer Aided Design / Electro-Magnetic Transient Design and Control (PSCAD/EMTDC). The central IED determined if the SLG fault was in a feeder or busbar by aggregating and analyzing the zero-sequence phasors received from the feeder IEDs. The results confirmed the validity and efficiency of our centralized protection scheme.
Starting Page	722
e-ISSN	19961073
DOI	10.3390/en14030722
Journal	Energies
Issue Number	3
Volume Number	14
Language	English
Publisher	MDPI
Publisher Date	2021-01-30
Access Restriction	Open
Subject Keyword	Energies Energy and Fuel Technology Centralized Protection Goose Message Ied Iec 61850 Single Line-to-ground Fault Ungrounded Distribution System
Content Type	Text
Resource Type	Article

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