Please use this identifier to cite or link to this item:
http://hdl.handle.net/10553/112168
Title: | New phase-changing soft open point and impacts on optimising unbalanced power distribution networks | Authors: | Lou, CW Yang, J Li, TR Vega Fuentes, Eduardo |
UNESCO Clasification: | 3306 Ingeniería y tecnología eléctricas | Keywords: | Load flow Power distribution control Energy storage Power distribution faults Concave programming, et al |
Issue Date: | 2020 | Project: | Electricity Satnav – electricity smart availability topology of network for abundant electric vehicles (Reference: EP/R001456/2) Street2Grid – an electricity blockchain platform for P2P energy trading’ (Reference: EP/S001778/2) |
Journal: | IET Generation, Transmission and Distribution | Abstract: | Three-phase unbalanced conditions in distribution networks are conventionally caused by load imbalance, asymmetrical fault conditions of transformers and impedances of three phases. The uneven integration of single-phase distributed generation (DG) worsens the imbalance situation. These unbalanced conditions result in financial losses, inefficient utilisation of assets and security risks to the network infrastructure. In this study, a phase-changing soft open point (PC-SOP) is proposed as a new way of connecting soft open points (SOPs) to balance the power flows among three phases by controlling active power and reactive power. Then an operational strategy based on PC-SOPs is presented for three-phase four-wire unbalanced systems. By optimising the regulation of SOPs, optimal energy storage systems dispatch and DG curtailment, the proposed strategy can reduce power losses and three-phase imbalance. Second-order cone programming (SOCP) relaxation is utilised to convert the original non-convex and non-linear model into an SOCP model which can be solved efficiently by commercial solvers. Case studies are conducted on a modified IEEE 34-node three-phase four-wire system and the IEEE 123-node test feeder to verify the effectiveness, efficiency and scalability of the proposed PC-SOP concept and its operational strategy. | URI: | http://hdl.handle.net/10553/112168 | ISSN: | 1751-8687 | DOI: | 10.1049/iet-gtd.2019.1660 | Source: | IET Generation, Transmission and Distribution [ISSN 1751-8687], v. 14(23), p. 5685 – 5696, (Diciembre 2020) |
Appears in Collections: | Artículos |
Items in accedaCRIS are protected by copyright, with all rights reserved, unless otherwise indicated.