Chen, JunruJunruChenLi, RanRanLiSoroudi, AlirezaAlirezaSoroudiKeane, AndrewAndrewKeaneFlynn, DamianDamianFlynnO'Donnell, TerenceTerenceO'Donnell2020-08-182020-08-182019 IEEE2019-10-17978-1-7281-4878-6/192577-1647http://hdl.handle.net/10197/11482The 45th Annual Conference of the IEEE Industrial Electronics Society, Lisbon, Portugal, 14-17 October 2019The smart transformer (ST) implemented using power electronics converters, has the capability of independent voltage control and reactive power isolation between its primary and secondary terminals. This capability provides a flexibility in the power system to support the voltage at the primary side and control the demand at the secondary side. Using this flexibility, the system power flow could, for example, be optimized for lower costs. This paper proposes an ST model suitable for OPF analysis. The effects of using multiple STs at different penetration levels, on the daily generation costs in an IEEE 39 bus test system are presented.en© 2019 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.Smart transformerStatic modelEconomical dispatchOptimal power flowConference Publication10.1109/IECON.2019.89268172019-12-1715/spp/e3125https://creativecommons.org/licenses/by-nc-nd/3.0/ie/