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Energies 2014, 7(1), 385-401; doi:10.3390/en7010385
Article

Distributed Load-Shedding System for Agent-Based Autonomous Microgrid Operations

1
, 2,*  and 3
1 Department of Information Media, University of Suwon/2-2 San, Wau-ri, Bongdam-eup, Hwaseong 445-743, Korea 2 Department of Electrical Engineering, Incheon National University/12-1 Songdo-dong, Yeonsu-gu, Incheon 406-772, Korea 3 Department of Computer and Mathematical Sciences, Tohoku University/Katahira 2-1-1, Aoba-ku, Sendai 980-8577, Japan
* Author to whom correspondence should be addressed.
Received: 19 November 2013 / Revised: 18 December 2013 / Accepted: 9 January 2014 / Published: 20 January 2014
(This article belongs to the Special Issue Smart Grids: The Electrical Power Network and Communication System)
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Abstract

A microgrid is an eco-friendly power system because renewable sources are used as main power sources. In the islanded operation mode of a microgrid, maintaining the balance between power supply and power demand is a very important problem. In the case of surplus supply, decreased generation output and/or charge of distributed storages can be applied to solve the imbalance between power supply and demand. In the case of supply shortages, increased generation output and/or discharge of distributed storages can be applied. Especially in the case of critical supply shortages, load shedding should be applied. In a distributed load-shedding approach, microgrid components need to make decisions autonomously. For autonomous microgrid operation, a multi-agent system has been investigated. In this paper, a distributed load-shedding system for agent-based autonomous operation of a microgrid is designed. The designed system is implemented and tested to show the functionality and feasibility of the proposed system.
Keywords: cooperative control; load shedding; microgrid; multi-agent system cooperative control; load shedding; microgrid; multi-agent system
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Lim, Y.; Kim, H.-M.; Kinoshita, T. Distributed Load-Shedding System for Agent-Based Autonomous Microgrid Operations. Energies 2014, 7, 385-401.

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