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Title: Protection of autonomous microgrids using agent-based distributed communication

This study 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 net-works due to the presence of power converters and relatively low inertia. In this work, 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 (RAS) 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 pro-posed schemes using a laboratory based microgrid. The setup was composed of actual generation units and IEDs using IEC 61850 protocol. The experimental results were in excellent agreement with the proposed protection scheme.
Authors:
ORCiD logo [1] ;  [1] ;  [1]
  1. Florida Intl Univ., Miami, FL (United States)
Publication Date:
Grant/Contract Number:
OE0000779
Type:
Accepted Manuscript
Journal Name:
IEEE Transactions on Power Delivery
Additional Journal Information:
Journal Volume: 32; Journal Issue: 1; Journal ID: ISSN 0885-8977
Publisher:
IEEE
Research Org:
Florida Intl Univ., Miami, FL (United States)
Sponsoring Org:
USDOE Office of Electricity Delivery and Energy Reliability (OE)
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; agent systems; IEC 61850; microgrid, protection; remedial action scheme; synchrophasor
OSTI Identifier:
1341351