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A bankruptcy problem approach to load-shedding in multiagent-based microgrid operation.
Hak-Man Kim1, Tetsuo Kinoshita, Yujin Lim
1Department of Electrical Engineering, University of Incheon / 12-1, Sondo-dong, Yeonsu-gu, Incheon, 406-840, Korea. hmkim@incheon.ac.kr
Sensors (Basel, Switzerland)
|December 14, 2011
Summary
Load-shedding in islanded microgrids is framed as a bankruptcy problem. This study compares bankruptcy rules for effective resource allocation during power shortages, enhancing microgrid stability.
Area of Science:
- Electrical Engineering
- Computer Science
- Operations Research
Background:
- Microgrids require stable frequency, especially in islanded mode, necessitating control of distributed generation (DGs) and energy storage (DSs).
- Load-shedding, a critical aspect of islanded microgrid operation, involves intentionally reducing electricity consumption during supply shortages.
- Multiagent systems are increasingly studied for autonomous microgrid management, highlighting the need for effective load-shedding strategies.
Purpose of the Study:
- To address the critical challenge of load-shedding in multiagent-based islanded microgrids.
- To conceptualize and evaluate load-shedding as a resource allocation problem analogous to the bankruptcy problem.
- To compare the efficacy of established bankruptcy division rules for optimizing load-shedding outcomes in microgrids.
Main Methods:
- Framing the microgrid load-shedding problem as a bankruptcy problem, where limited resources (power) must be allocated among agents (loads).
- Implementing and comparing three bankruptcy division rules: constrained equal awards (CEA), constrained equal losses (CEL), and random arrival (RA).
- Utilizing a wireless sensor network (WSN) to facilitate agent interactions and communication within the islanded microgrid environment.
Main Results:
- The study provides a comparative analysis of load-shedding performance using different bankruptcy rules in an islanded microgrid.
- Results demonstrate how various division rules impact resource allocation and stability during power deficit conditions.
- The effectiveness of applying bankruptcy problem solutions to microgrid load-shedding scenarios is evaluated.
Conclusions:
- Load-shedding in islanded microgrids can be effectively modeled and managed using bankruptcy problem principles.
- The choice of bankruptcy division rule significantly influences the outcome of load-shedding strategies.
- This research offers a novel approach to enhance the operational stability and reliability of autonomous microgrids.
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