Multi-terminal phase-changing soft open point SDP modeling for imbalance mitigation in active distribution networks

Lou, C., Yang, J. , Vega-Fuentes, E. , Meena, N. K. and Min, L. (2022) Multi-terminal phase-changing soft open point SDP modeling for imbalance mitigation in active distribution networks. International Journal of Electrical Power and Energy Systems, 142(Part A), 108228. (doi: 10.1016/j.ijepes.2022.108228)

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Active distribution networks (ADNs) are capable of mitigating phase imbalance caused by various operational conditions, including uneven growth of single-phase and intermittent distributed energy resources (DERs), incurring financial losses or costly infrastructure reinforcements. In this paper, the research gap for a flexible phase imbalance mitigating solution is addressed by proposing a multi-terminal phase-changing soft open point (PC-SOP). It is explored in detail on balancing the power flows and compared with other different types and ways of connection (including two-terminal and conventional). Then operational strategies based on different cases are presented for imbalance mitigation. Semidefinite programming (SDP) relaxation is utilized to convert the original non-convex nonlinear model into an SDP model which can be solved efficiently by commercial solvers. Two case studies demonstrations are conducted on IEEE 13-node and 123-node three-phase networks. It is found that multi-terminal PC-SOPs can minimize power losses by between 5.56 % and 28.98% and have better voltage control (all buses operate in the allowed voltage range [0.94, 1.10]) and less PV curtailment (reduced by at least 6.31 MW/24 h and 0.63 MW/24 h for the two test networks separately) when compared to conventional SOP technologies.

Item Type:Articles
Additional Information:Chengwei Lou would like to thank the China Scholarship Council (Reference: CSC201806350260) and the University of Glasgow for supporting his PhD study.
Glasgow Author(s) Enlighten ID:Yang, Dr Jin and Min, Liang and Vega, Mr Eduardo and Lou, Chengwei
Authors: Lou, C., Yang, J., Vega-Fuentes, E., Meena, N. K., and Min, L.
College/School:College of Science and Engineering > School of Engineering > Systems Power and Energy
Journal Name:International Journal of Electrical Power and Energy Systems
ISSN (Online):1879-3517
Published Online:10 May 2022
Copyright Holders:Copyright © 2022 The Author(s)
First Published:First published in International Journal of Electrical Power and Energy Systems 142(Part A): 108228
Publisher Policy:Reproduced under a Creative Commons License

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