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Sensors (Basel). 2010;10(10):8888-98. doi: 10.3390/s101008888. Epub 2010 Sep 28.

A bankruptcy problem approach to load-shedding in multiagent-based microgrid operation.

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Department of Electrical Engineering, University of Incheon / 12-1, Sondo-dong, Yeonsu-gu, Incheon, 406-840, Korea.


A microgrid is composed of distributed power generation systems (DGs), distributed energy storage devices (DSs), and loads. To maintain a specific frequency in the islanded mode as an important requirement, the control of DGs' output and charge action of DSs are used in supply surplus conditions and load-shedding and discharge action of DSs are used in supply shortage conditions. Recently, multiagent systems for autonomous microgrid operation have been studied. Especially, load-shedding, which is intentional reduction of electricity use, is a critical problem in islanded microgrid operation based on the multiagent system. Therefore, effective schemes for load-shedding are required. Meanwhile, the bankruptcy problem deals with dividing short resources among multiple agents. In order to solve the bankruptcy problem, division rules, such as the constrained equal awards rule (CEA), the constrained equal losses rule (CEL), and the random arrival rule (RA), have been used. In this paper, we approach load-shedding as a bankruptcy problem. We compare load-shedding results by above-mentioned rules in islanded microgrid operation based on wireless sensor network (WSN) as the communication link for an agent's interactions.


bankruptcy problem; islanded operation; load-shedding; microgrid; multiagent system

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