Smart meter based two-layer distribution system state estimation in unbalanced MV/LV networks

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Khan, Maman Ahmad
Hayes, Barry P.
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Institute of Electrical and Electronics Engineers (IEEE)
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This article presents a smart meter based two-layer state estimation technique, design to enable integrated monitoring of medium-voltage (MV) and low-voltage (LV) power distribution networks. The main contributions of this work include the development of a novel topology reduction technique for LV networks in order to carry out state estimation with a reduced number of smart meter based measurements, and a linear LV state estimation technique, which reduces convergence problems in LV networks. In addition, a detailed framework for integrated MV/LV network state estimation in realistic, unbalanced three-phase networks is proposed and demonstrated using the IEEE 13 bus and IEEE 906 LV networks. The results suggest that the proposed two-layer state estimation technique is robust and provides improved distribution system state estimation accuracy compared to traditional approaches.
Distribution grid monitoring , Distribution system state estimation (DSSE) , Low-voltage (LV) network , Smart meters , Topology reduction
Khan, M. A. and Hayes, B. P. (2022) 'Smart meter based two-layer distribution system state estimation in unbalanced MV/LV networks', IEEE Transactions on Industrial Informatics, 18(1), pp. 688-2697. doi: 10.1109/TII.2021.3079267
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