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Open AccessArticle

Performance Analysis of Distributed Estimation for Data Fusion Using a Statistical Approach in Smart Grid Noisy Wireless Sensor Networks

1
Department of Electrical and Information Engineering, Faculty of Engineering, University of Ruhuna, Galle 80000, Southern Province, Sri Lanka
2
Department of Electrical and Computer Engineering, Faculty of Information and Communication Technology, University of Calgary, Calgary, AB T5J0N3, Canada
*
Author to whom correspondence should be addressed.
Sensors 2020, 20(2), 567; https://doi.org/10.3390/s20020567
Received: 5 December 2019 / Revised: 28 December 2019 / Accepted: 16 January 2020 / Published: 20 January 2020
(This article belongs to the Special Issue Information Fusion in Sensor Networks)
Internet of Things (IoT) can significantly enhance various aspects of today’s electric power grid infrastructures for making reliable, efficient, and safe next-generation Smart Grids (SGs). However, harsh and complex power grid infrastructures and environments reduce the accuracy of the information propagating through IoT platforms. In particularly, information is corrupted due to the measurement errors, quantization errors, and transmission errors. This leads to major system failures and instabilities in power grids. Redundant information measurements and retransmissions are traditionally used to eliminate the errors in noisy communication networks. However, these techniques consume excessive resources such as energy and channel capacity and increase network latency. Therefore, we propose a novel statistical information fusion method not only for structural chain and tree-based sensor networks, but also for unstructured bidirectional graph noisy wireless sensor networks in SG environments. We evaluate the accuracy, energy savings, fusion complexity, and latency of the proposed method by comparing the said parameters with several distributed estimation algorithms using extensive simulations proposing it for several SG applications. Results prove that the overall performance of the proposed method outperforms other fusion techniques for all considered networks. Under Smart Grid communication environments, the proposed method guarantees for best performance in all fusion accuracy, complexity and energy consumption. Analytical upper bounds for the variance of the final aggregated value at the sink node for structured networks are also derived by considering all major errors. View Full-Text
Keywords: data fusion; distributed estimation; energy efficiency; latency; fusion complexity; information accuracy; internet of things; smart grid communications data fusion; distributed estimation; energy efficiency; latency; fusion complexity; information accuracy; internet of things; smart grid communications
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Seneviratne, C.; Wijesekara, P.A.D.S.N.; Leung, H. Performance Analysis of Distributed Estimation for Data Fusion Using a Statistical Approach in Smart Grid Noisy Wireless Sensor Networks. Sensors 2020, 20, 567.

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