The Imbalance-Induced Resistive Heating Profiles Analysis for Low Voltage Transformers

Lurui Fang, Kang Ma, Xiao Song

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Abstract

Phase imbalance in the UK and European low voltage (415V, LV) distribution networks is a widely acknowledged issue. For LV transformers (11 kV/0.415 kV), phase imbalance causes extra energy losses on transformer windings. These extra energy losses induce the imbalance-induced resistive heating, which then causes the increase of LV transformers' winding temperature. A key barrier for understanding the general picture of imbalance-induced resistance heating is the absence of LV transformers' time series loading data, i.e. UK has 900,000 LV transformer, but most of them are not monitored. To address this challenge, a data-driven approach is proposed. It finds representative clusters of the imbalance-induced resistive heating profiles, leverage the data from only 800 LV transformers. Through an extensive case study, the representative imbalance-induced resistive heating profiles are given by cumulative density functions. The case study also reveals that up to 50% resistive heating is produced by the imbalance-induced resistive heating.
Original languageEnglish
Title of host publicationICEMPE 2019 - 2nd International Conference on Electrical Materials and Power Equipment, Proceedings
Subtitle of host publicationICEMPE 2019
PublisherIEEE
Pages560-563
Number of pages4
ISBN (Electronic)978-1-5386-8435-1
ISBN (Print)978-1-5386-8434-4
DOIs
Publication statusPublished - 3 Jun 2019

Publication series

NameICEMPE 2019 - 2nd International Conference on Electrical Materials and Power Equipment, Proceedings

Keywords

  • low voltage
  • phase imbalance
  • resistive heating
  • three-phase power
  • transformer operation

ASJC Scopus subject areas

  • Polymers and Plastics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering
  • Safety, Risk, Reliability and Quality
  • Electronic, Optical and Magnetic Materials

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