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Optimal placement of PMUs and communication links for distributed state estimation in distribution networks

Zhao, Zhida, Yu, Hao, Li, Peng, Li, Peng, Kong, Xiangyu, Wu, Jianzhong and Wang, Chengshan 2019. Optimal placement of PMUs and communication links for distributed state estimation in distribution networks. Applied Energy 256 , 113963. 10.1016/j.apenergy.2019.113963

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Abstract

With the expansion in scale and complexity of distribution networks, distributed state estimation (DSE), a real-time database for other on-line applications, is becoming popular for large-scale active distribution networks (ADN). Measurements from phasor measurement units (PMUs) with the same time stamp can assist DSE to obtain faster and more accurate estimation; however, the configuration of PMUs and communication links should be updated to support data collection and transmission. This paper proposes an optimal PMUs and communication links placement method for DSE in distribution networks. A network partitioning method is presented with the aim of balancing calculation times among subareas. Then, a binary integer linear programming model that simultaneously considers the optimal placement of PMUs, phasor data concentrators (PDCs) and communication links is proposed. The economy of the configuration scheme is guaranteed on the premise that the network is fully observable. Finally, case studies on the IEEE 33-node, PG&E 69-node and IEEE 123-node systems verify the feasibility of the proposed method.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: Elsevier
ISSN: 0306-2619
Date of Acceptance: 4 October 2019
Last Modified: 07 Nov 2019 12:15
URI: http://orca.cf.ac.uk/id/eprint/126407

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