Three-phase OPF based local flexibility market for mitigating unbalanced voltage in distribution systems

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Fan, Jiabin and Kockar, Ivana; (2021) Three-phase OPF based local flexibility market for mitigating unbalanced voltage in distribution systems. In: 2021 IEEE PES Innovative Smart Grid Technologies Europe. IEEE, FIN, pp. 1-5. ISBN 9781665448758 (https://doi.org/10.1109/ISGTEurope52324.2021.96400...)

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Abstract

This paper presents a three-phase optimal power flow (TOFP) based method for mitigating the voltage unbalance factor (VUF) with the help of demand-side flexibility. It can be expected that issues with the unbalanced voltage can increase in the future distribution system with significant levels of single-phase Distributed Energy Resources (DERs). Unhealthy voltage unbalance status reduces the efficiency of the distribution systems, leading to energy loss and heat problems in electrical devices. This paper has proposed a three-phase OPF (TOPF) based local flexibility market (LFM) framework, where Distribution System Operators (DSOs) can utilize the upwards or downwards flexibility to manage the voltage unbalance. A modified IEEE-34 bus distribution network is used to illustrate the implementation of the proposed methodology, with the simulation results showing that the VUF value varies with the unbalanced load and connected photovoltaic (PV) levels, while the VUF drops below the limiting threshold when the flexible phase-by-phase flexibility services are introduced. This means that the proposed approach could inform modification of flexible service product in the future local flexibility market framework to help DSOs mitigate the unbalanced voltage.

ORCID iDs

Fan, Jiabin and Kockar, Ivana ORCID logoORCID: https://orcid.org/0000-0001-9246-1303;
  • Item type:Book Section
    ID code:80092
    Dates:
    Date
    Event
    21 December 2021
    Published
    21 October 2021
    Published Online
    15 May 2021
    Accepted
    Notes:© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting /republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
    Subjects:Technology > Electrical engineering. Electronics Nuclear engineering
    Department:Faculty of Engineering > Electronic and Electrical Engineering
    Depositing user: Pure Administrator
    Date deposited:06 Apr 2022 16:03
    Last modified:11 Nov 2024 15:27
    URI:https://strathprints.strath.ac.uk/id/eprint/80092
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