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Energies 2014, 7(9), 6050-6062; doi:10.3390/en7096050

Multiagent-Based Distributed Load Shedding for Islanded Microgrids

1,* , 1
and
2
1
School of Electrical Engineering, Southeast University, Nanjing 210096, China
2
NARI-Relays Electric CO., LTD, Nanjing 211100, China
*
Author to whom correspondence should be addressed.
Received: 22 July 2014 / Revised: 5 September 2014 / Accepted: 9 September 2014 / Published: 15 September 2014
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Abstract

This paper addresses a multiagent-based distributed load shedding scheme to restore frequency for the microgrids during islanded operation. The objective of the proposed scheme is to realize a distributed load shedding considering its associated cost and the capacity of the flexible loads. There are two advantages of the proposed scheme: (1) it is a distributed scheme using average-consensus theorem, which can discover the global information when only communications between immediate neighboring agents are used, moreover it can meet the requirements of plug-and-play operations more easily than a centralized scheme; (2) it is a new adaptive load shedding through the comprehensive weights which take into accounts the cost of load shedding and the capacity of flexible loads, these comprehensive weights are evaluated locally by making use of the adaptability and intelligence characteristics of agents. Simulation results in power systems computer aided design (PSCAD) illustrate the validity and adaptability of the proposed load shedding scheme. View Full-Text
Keywords: average-consensus theorem; distributed load shedding; islanded microgrids; multiagent average-consensus theorem; distributed load shedding; islanded microgrids; multiagent
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Wu, X.; Jiang, P.; Lu, J. Multiagent-Based Distributed Load Shedding for Islanded Microgrids. Energies 2014, 7, 6050-6062.

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