Dynamic thermoelectric modelling of oil-filled transformers for optimized integration of wind power in distribution networks

Syed Hamza Hasan Kazmi, Joachim Holbøll, Thomas Herskind Olesen, Troels Stybe Sørensen

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

Oil-filled power transformers are some of the most critical components in the distribution network. The grid upgrade cost along with congestion challenges associated with rapid increase in onshore wind energy integration in the distribution system can partly be resolved by dynamic loading of transformers. Distribution transformers can be dynamically rated if the temperatures, especially Top-Oil (TOT) and Hot-Spot (HST) temperatures, are accurately determined. This paper presents industry’s well-proven and established differential equations-based thermoelectric models for transformers. The models are validated, and the performances are compared with the measured temperatures for a 6.8 MVA wind turbine transformer. Moreover, the thermal lifetime utilization of the test transformer is calculated based on its loading and ambient conditions history for the year 2017, using the recommendations of international loading guides. The annual thermal variations and lifetime utilization of test distribution transformer are assessed for an increase in wind energy production in 2017. Based on this analysis, further wind energy integration is facilitated by deferring grid expansion costs related to transformers.
Original languageEnglish
Title of host publicationProceedings of 25th International Conference on Electricity Distribution
Number of pages5
PublisherCired
Publication date2019
Article number1744
Publication statusPublished - 2019
Event25th International Conference on Electricity Distribution - IFEMA North convention centre, Madrid, Spain
Duration: 3 Jun 20196 Jun 2019
http://www.cired2019.org/

Conference

Conference25th International Conference on Electricity Distribution
LocationIFEMA North convention centre
CountrySpain
CityMadrid
Period03/06/201906/06/2019
Internet address

Cite this

Kazmi, S. H. H., Holbøll, J., Olesen, T. H., & Sørensen, T. S. (2019). Dynamic thermoelectric modelling of oil-filled transformers for optimized integration of wind power in distribution networks. In Proceedings of 25th International Conference on Electricity Distribution [1744] Cired.
Kazmi, Syed Hamza Hasan ; Holbøll, Joachim ; Olesen, Thomas Herskind ; Sørensen, Troels Stybe. / Dynamic thermoelectric modelling of oil-filled transformers for optimized integration of wind power in distribution networks. Proceedings of 25th International Conference on Electricity Distribution. Cired, 2019.
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title = "Dynamic thermoelectric modelling of oil-filled transformers for optimized integration of wind power in distribution networks",
abstract = "Oil-filled power transformers are some of the most critical components in the distribution network. The grid upgrade cost along with congestion challenges associated with rapid increase in onshore wind energy integration in the distribution system can partly be resolved by dynamic loading of transformers. Distribution transformers can be dynamically rated if the temperatures, especially Top-Oil (TOT) and Hot-Spot (HST) temperatures, are accurately determined. This paper presents industry’s well-proven and established differential equations-based thermoelectric models for transformers. The models are validated, and the performances are compared with the measured temperatures for a 6.8 MVA wind turbine transformer. Moreover, the thermal lifetime utilization of the test transformer is calculated based on its loading and ambient conditions history for the year 2017, using the recommendations of international loading guides. The annual thermal variations and lifetime utilization of test distribution transformer are assessed for an increase in wind energy production in 2017. Based on this analysis, further wind energy integration is facilitated by deferring grid expansion costs related to transformers.",
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Kazmi, SHH, Holbøll, J, Olesen, TH & Sørensen, TS 2019, Dynamic thermoelectric modelling of oil-filled transformers for optimized integration of wind power in distribution networks. in Proceedings of 25th International Conference on Electricity Distribution., 1744, Cired, 25th International Conference on Electricity Distribution, Madrid, Spain, 03/06/2019.

Dynamic thermoelectric modelling of oil-filled transformers for optimized integration of wind power in distribution networks. / Kazmi, Syed Hamza Hasan; Holbøll, Joachim; Olesen, Thomas Herskind; Sørensen, Troels Stybe.

Proceedings of 25th International Conference on Electricity Distribution. Cired, 2019. 1744.

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

TY - GEN

T1 - Dynamic thermoelectric modelling of oil-filled transformers for optimized integration of wind power in distribution networks

AU - Kazmi, Syed Hamza Hasan

AU - Holbøll, Joachim

AU - Olesen, Thomas Herskind

AU - Sørensen, Troels Stybe

PY - 2019

Y1 - 2019

N2 - Oil-filled power transformers are some of the most critical components in the distribution network. The grid upgrade cost along with congestion challenges associated with rapid increase in onshore wind energy integration in the distribution system can partly be resolved by dynamic loading of transformers. Distribution transformers can be dynamically rated if the temperatures, especially Top-Oil (TOT) and Hot-Spot (HST) temperatures, are accurately determined. This paper presents industry’s well-proven and established differential equations-based thermoelectric models for transformers. The models are validated, and the performances are compared with the measured temperatures for a 6.8 MVA wind turbine transformer. Moreover, the thermal lifetime utilization of the test transformer is calculated based on its loading and ambient conditions history for the year 2017, using the recommendations of international loading guides. The annual thermal variations and lifetime utilization of test distribution transformer are assessed for an increase in wind energy production in 2017. Based on this analysis, further wind energy integration is facilitated by deferring grid expansion costs related to transformers.

AB - Oil-filled power transformers are some of the most critical components in the distribution network. The grid upgrade cost along with congestion challenges associated with rapid increase in onshore wind energy integration in the distribution system can partly be resolved by dynamic loading of transformers. Distribution transformers can be dynamically rated if the temperatures, especially Top-Oil (TOT) and Hot-Spot (HST) temperatures, are accurately determined. This paper presents industry’s well-proven and established differential equations-based thermoelectric models for transformers. The models are validated, and the performances are compared with the measured temperatures for a 6.8 MVA wind turbine transformer. Moreover, the thermal lifetime utilization of the test transformer is calculated based on its loading and ambient conditions history for the year 2017, using the recommendations of international loading guides. The annual thermal variations and lifetime utilization of test distribution transformer are assessed for an increase in wind energy production in 2017. Based on this analysis, further wind energy integration is facilitated by deferring grid expansion costs related to transformers.

M3 - Article in proceedings

BT - Proceedings of 25th International Conference on Electricity Distribution

PB - Cired

ER -

Kazmi SHH, Holbøll J, Olesen TH, Sørensen TS. Dynamic thermoelectric modelling of oil-filled transformers for optimized integration of wind power in distribution networks. In Proceedings of 25th International Conference on Electricity Distribution. Cired. 2019. 1744