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

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.
LanguageEnglish
Title of host publication2019 2nd International Conference on Electrical Materials and Power Equipment
Subtitle of host publicationICEMPE 2019
PublisherIEEE
ISBN (Electronic)978-1-5386-8435-1
ISBN (Print)978-1-5386-8434-4
DOIs
StatusPublished - 3 Jun 2019

Cite this

Fang, L., Ma, K., & Song, X. (2019). The Imbalance-Induced Resistive Heating Profiles Analysis for Low Voltage Transformers. In 2019 2nd International Conference on Electrical Materials and Power Equipment: ICEMPE 2019 IEEE. https://doi.org/10.1109/ICEMPE.2019.8727274

The Imbalance-Induced Resistive Heating Profiles Analysis for Low Voltage Transformers. / Fang, Lurui; Ma, Kang; Song, Xiao.

2019 2nd International Conference on Electrical Materials and Power Equipment: ICEMPE 2019. IEEE, 2019.

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

Fang, L, Ma, K & Song, X 2019, The Imbalance-Induced Resistive Heating Profiles Analysis for Low Voltage Transformers. in 2019 2nd International Conference on Electrical Materials and Power Equipment: ICEMPE 2019. IEEE. https://doi.org/10.1109/ICEMPE.2019.8727274
Fang L, Ma K, Song X. The Imbalance-Induced Resistive Heating Profiles Analysis for Low Voltage Transformers. In 2019 2nd International Conference on Electrical Materials and Power Equipment: ICEMPE 2019. IEEE. 2019 https://doi.org/10.1109/ICEMPE.2019.8727274
Fang, Lurui ; Ma, Kang ; Song, Xiao. / The Imbalance-Induced Resistive Heating Profiles Analysis for Low Voltage Transformers. 2019 2nd International Conference on Electrical Materials and Power Equipment: ICEMPE 2019. IEEE, 2019.
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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.",
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AB - 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.

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