Abstract
Monitoring the status of existing devices and identification of newly added devices is required in microgrids to adjust the operation schedule followed by any event or integration of a new device. Therefore, in this paper, automatic reconfiguration of microgrids is considered after the addition of a new device or change in the operation status of an existing device by using a multiagent system. This capability of the microgrid is named as auto-configuration function, which is performed by the auto-configurator agent. In case of addition of a new device, the auto-configurator agent is responsible for authorization and registration of the newly added device. In case of change in status of any existing device, the status information is updated. After integration of a new device or change in status of an existing device, re-optimization is carried out by the energy management system (EMS) agent. Agent communication language (ACL) is used to develop a modified contract net protocol (MCNP) for communication among different agents. EMS agent and auto-configurator agent exchange information for economic rescheduling of the microgrid components. Simulation results have shown that the proposed method can be used for optimal operation of microgrids when the configuration changes due to the addition/removal of a device.
Highlights
Due to the growing energy demand and environmental protection issues, distributed energy resources (DERs), such as renewable distributed generators (RDGs), battery energy storage systems (BESSs), and controllable distributed generators (CDGs), are becoming the major considerations for the modern power industry
The results show that the system cansystem automatically update theupdate systemthe information and adjustand the simulation results show that the MG
Diesel generators and BESSs are considered as the main power supply in the MG system
Summary
Due to the growing energy demand and environmental protection issues, distributed energy resources (DERs), such as renewable distributed generators (RDGs), battery energy storage systems (BESSs), and controllable distributed generators (CDGs), are becoming the major considerations for the modern power industry. Due to the influence of uncertain factors such as intermittent fluctuations in renewable energy sources (RESs) and faults [17,18], these equipment may connect/disconnect to/from the MG system In these cases, EMSs could not automatically update the device characteristics, or adjust operation algorithms to adapt to new operation mode [16,19]. A distributed control method using the MAS technology has been developed for MG control [22] This approach presented an algorithm based on the symmetrical assignment problem to optimize power exchange between the supply units and the local demands, as well the utility grid. An operation algorithm based on the auto-configuration function of an MG is proposed for registration/deregistration whenever a new device connects to the MG system or an existing device. A mixed integer linear program based-mathematical modelis isshown shownininSection
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