A Distributed Event-Triggered Control Strategy for DC Microgrids Based on Publish-Subscribe Model Over Industrial Wireless Sensor Networks

This paper presents a complete design, analysis, and performance evaluation of a novel distributed event-triggered control and estimation strategy for dc microgrids. The primary objective of this work is to efficiently stabilize the grid voltage, and to further balance the energy level of the energy...

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Bibliographic Details
Published in:IEEE transactions on smart grid 2019-07, Vol.10 (4), p.4323-4337
Main Authors: Alavi, Seyed Amir, Mehran, Kamyar, Hao, Yang, Rahimian, Ardavan, Mirsaeedi, Hamed, Vahidinasab, Vahid
Format: Article
Language:English
Subjects:
Analytical models
Communications traffic
Computer simulation
Control systems
Data exchange
DC microgrid
Decentralized control
Distributed generation
distributed state estimation
Electric power grids
Energy consumption
Energy levels
Energy storage
Event triggered control
Load modeling
Microgrids
Packet transmission
Performance evaluation
Publish-subscribe
publish-subscribe model
Remote sensors
Renewable energy sources
Sensors
Smart grid
Storage systems
Strategy
Voltage control
Wireless sensor networks
WSN
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Summary:This paper presents a complete design, analysis, and performance evaluation of a novel distributed event-triggered control and estimation strategy for dc microgrids. The primary objective of this work is to efficiently stabilize the grid voltage, and to further balance the energy level of the energy storage systems. The locally-installed distributed controllers are utilized to reduce the number of transmitted packets and battery usage of the installed sensors, based on a proposed event-triggered communication scheme. Also, to reduce the network traffic, an optimal observer is employed which utilizes a modified Kalman consensus filter to estimate the state of the dc microgrid via the distributed sensors. Furthermore, in order to effectively provide an intelligent data exchange mechanism for the proposed event-triggered controller, the publish-subscribe communication model is employed to setup a distributed control infrastructure in industrial wireless sensor networks. The performance of the proposed control and estimation strategy is validated via the simulations of a dc microgrid composed of renewable energy sources. The results confirm the appropriateness of the implemented strategy for the optimal utilization of the advanced industrial network architectures in the smart grids.
ISSN:1949-3053
1949-3061
DOI:10.1109/TSG.2018.2856893