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.
Highlights
A microgrid is an emerging frontier in meeting the challenges of providing reliable power supplies in small communities [1]
The following describes agent types and responsibilities associated with load shedding (The extended functionalities for the load shedding are specified by the sentence “when the load shedding is initiated”)
We have presented a distributed load-shedding system for an agent-based autonomous operation in an islanded microgrid
Summary
A microgrid is an emerging frontier in meeting the challenges of providing reliable power supplies in small communities [1]. Islanded mode means an intentional isolated operation from an upstream power grid for maintenance purposes or due to a fault occurrence on the power grid In this mode, if load requirements are less than the power generation, the amount of power generated by DGs decreases and/or DSs charge the amount of excess power to solve the power imbalance problem. In a centralized load-shedding approach, all components in a microgrid cooperate for a common goal, e.g., the maximization of system performance It is suitable if the components have the same owner or a very strong operational or legal connection. For a distributed load-shedding approach, a multi-agent system is designed for autonomous microgrid operation in an islanded mode.
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