Protection of Autonomous Microgrids Using Agent-Based Distributed Communication

This paper presents a real-time implementation of autonomous microgrid protection using agent-based distributed communication. Protection of an autonomous microgrid requires special considerations compared to large-scale distribution networks due to the presence of power converters and relatively lo...

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Veröffentlicht in:IEEE transactions on power delivery Jg. 32; H. 1; S. 351 - 360
Hauptverfasser: Cintuglu, Mehmet H., Tan Ma, Mohammed, Osama A.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: IEEE 01.02.2017
Schlagworte:
Agent systems
Circuit faults
Delays
Density estimation robust algorithm
Fault currents
IEC 61850
IEC Standards
microgrid
Microgrids
Peer-to-peer computing
protection
remedial action scheme (RAS)
synchrophasor
ISSN:0885-8977, 1937-4208
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Zusammenfassung:This paper presents a real-time implementation of autonomous microgrid protection using agent-based distributed communication. Protection of an autonomous microgrid requires special considerations compared to large-scale distribution networks due to the presence of power converters and relatively low inertia. In this paper, we introduce a practical overcurrent and a frequency-selectivity method to overcome conventional limitations. The proposed overcurrent scheme defines a selectivity mechanism considering the remedial action scheme of the microgrid after a fault instant based on feeder characteristics and the location of the intelligent electronic devices (IEDs). A synchrophasor-based online frequency-selectivity approach is proposed to avoid pulse loading effects in low inertia microgrids. Experimental results are presented for verification of the proposed schemes using a laboratory-based microgrid. The setup was composed of actual generation units and IEDs using the IEC 61850 protocol. The experimental results were in excellent agreement with the proposed protection scheme.
ISSN:0885-8977
1937-4208
DOI:10.1109/TPWRD.2016.2551368