Real‐time monitoring of transformer hot‐spot temperature based on nameplate data

Abstract This paper proposes a real‐time hot‐spot monitoring method for three‐phase two‐winding oil‐filled transformers under steady‐state conditions, where the corresponding test certificates are not accessible to the customers. For this purpose, the separate determination of iron‐core and copper l...

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Main Authors: Behrooz Rezaeealam, Saeid Askary
Format: Article
Language:English
Published: Wiley 2023-07-01
Series:IET Generation, Transmission & Distribution
Subjects:
Online Access:https://doi.org/10.1049/gtd2.12884
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author Behrooz Rezaeealam
Saeid Askary
author_facet Behrooz Rezaeealam
Saeid Askary
author_sort Behrooz Rezaeealam
collection DOAJ
description Abstract This paper proposes a real‐time hot‐spot monitoring method for three‐phase two‐winding oil‐filled transformers under steady‐state conditions, where the corresponding test certificates are not accessible to the customers. For this purpose, the separate determination of iron‐core and copper losses is achieved by real‐time measuring of voltages and currents in both primary and secondary sides and also employing nameplate data of the transformer, including the winding resistances. Subsequent calculations based on IEEE Std C57.110‐2018 provide the top‐oil and hot‐spot temperatures. It is shown that the estimated top‐oil and winding hot‐spot temperatures and also load and no‐load losses match with the measured ones with the maximum difference of 3.5%, 2%, 2.7%, and 9%, respectively.
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spelling doaj.art-fed29a4d0cc94a20b0c3b4f77eed31f62023-07-14T06:46:05ZengWileyIET Generation, Transmission & Distribution1751-86871751-86952023-07-0117143140315110.1049/gtd2.12884Real‐time monitoring of transformer hot‐spot temperature based on nameplate dataBehrooz Rezaeealam0Saeid Askary1Lorestan University Khorramabad Lorestan IranIlam Gas Refinery National Iranian Gas Company (NIGC) Ilam IranAbstract This paper proposes a real‐time hot‐spot monitoring method for three‐phase two‐winding oil‐filled transformers under steady‐state conditions, where the corresponding test certificates are not accessible to the customers. For this purpose, the separate determination of iron‐core and copper losses is achieved by real‐time measuring of voltages and currents in both primary and secondary sides and also employing nameplate data of the transformer, including the winding resistances. Subsequent calculations based on IEEE Std C57.110‐2018 provide the top‐oil and hot‐spot temperatures. It is shown that the estimated top‐oil and winding hot‐spot temperatures and also load and no‐load losses match with the measured ones with the maximum difference of 3.5%, 2%, 2.7%, and 9%, respectively.https://doi.org/10.1049/gtd2.12884loss measurementtransformers
spellingShingle Behrooz Rezaeealam
Saeid Askary
Real‐time monitoring of transformer hot‐spot temperature based on nameplate data
IET Generation, Transmission & Distribution
loss measurement
transformers
title Real‐time monitoring of transformer hot‐spot temperature based on nameplate data
title_full Real‐time monitoring of transformer hot‐spot temperature based on nameplate data
title_fullStr Real‐time monitoring of transformer hot‐spot temperature based on nameplate data
title_full_unstemmed Real‐time monitoring of transformer hot‐spot temperature based on nameplate data
title_short Real‐time monitoring of transformer hot‐spot temperature based on nameplate data
title_sort real time monitoring of transformer hot spot temperature based on nameplate data
topic loss measurement
transformers
url https://doi.org/10.1049/gtd2.12884
work_keys_str_mv AT behroozrezaeealam realtimemonitoringoftransformerhotspottemperaturebasedonnameplatedata
AT saeidaskary realtimemonitoringoftransformerhotspottemperaturebasedonnameplatedata