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Smart Transformer and Low Frequency Transformer Comparison on Power Delivery Characteristics in the Power System

  • Junru Chen
  • , Rongwu Zhu
  • , Terence Oldonnell
  • , Marco Liserre
  • University College Dublin
  • Kiel University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Smart transformer is a power electronics-based transformer, offering voltage regulation and DC connectivity. As a transformer, its basic function is still power delivery. Smart transformer with advanced controls can support MV gird voltage by absorbing/injecting reactive power while actively regulate the LV grid voltage. Due to the controllable voltage in both MV and LV side, the power delivery of smart transformer is flexible. This paper focuses on the power delivery characteristic of smart transformer and compares with the conventional low frequency transformer with the help of STACTOM at its primary side or on load tap changer at its secondary side, in the power system by means of maximum deliverable power and power-voltage curve analysis. The Simulink results validate that the smart transformer improves system voltage stability compared to the traditional low frequency transformer with load tap changer.

Original languageEnglish
Title of host publication2018 110th AEIT International Annual Conference, AEIT 2018
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9788887237405
DOIs
StatePublished - 14 Dec 2018
Externally publishedYes
Event110th AEIT International Annual Conference, AEIT 2018 - Bari, Italy
Duration: 3 Oct 20185 Oct 2018

Publication series

Name2018 110th AEIT International Annual Conference, AEIT 2018

Conference

Conference110th AEIT International Annual Conference, AEIT 2018
Country/TerritoryItaly
CityBari
Period3/10/185/10/18

Keywords

  • Low frequency transformer
  • Power delivery
  • Smart transformer
  • Voltage stability

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