An Equivalent Heat Transfer Model Instead of Wind Speed Measuring for Dynamic Thermal Rating of Transmission Lines

With the increase in electricity demand, the ampacity calculation based on the dynamic thermal rating (DTR) technology is increasingly significant for assessing and improving the power transfer capacity of the existing overhead conductors. However, the DTR models now available present some inadequac...

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Main Authors:	Zhao Liu, Honglei Deng, Ruidong Peng, Xiangyang Peng, Rui Wang, Wencheng Zheng, Pengyu Wang, Deming Guo, Gang Liu
Format:	Article
Language:	English
Published:	MDPI AG 2020-09-01
Series:	Energies
Subjects:	dynamic thermal rating weather parameters overhead conductor conductor ampacity finite element method heat loss
Online Access:	https://www.mdpi.com/1996-1073/13/18/4679

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spelling	doaj-2eb4c822238445b1b4ff4a698a40d4f42020-11-25T03:47:07ZengMDPI AGEnergies1996-10732020-09-01134679467910.3390/en13184679An Equivalent Heat Transfer Model Instead of Wind Speed Measuring for Dynamic Thermal Rating of Transmission LinesZhao Liu0Honglei Deng1Ruidong Peng2Xiangyang Peng3Rui Wang4Wencheng Zheng5Pengyu Wang6Deming Guo7Gang Liu8School of Electric Power Engineering, South China University of Technology, Guangzhou 510640, ChinaSchool of Electric Power Engineering, South China University of Technology, Guangzhou 510640, ChinaSchool of Electric Power Engineering, South China University of Technology, Guangzhou 510640, ChinaSchool of Electric Power Engineering, South China University of Technology, Guangzhou 510640, ChinaSchool of Electric Power Engineering, South China University of Technology, Guangzhou 510640, ChinaSchool of Electric Power Engineering, South China University of Technology, Guangzhou 510640, ChinaSchool of Electric Power Engineering, South China University of Technology, Guangzhou 510640, ChinaSchool of Electric Power Engineering, South China University of Technology, Guangzhou 510640, ChinaSchool of Electric Power Engineering, South China University of Technology, Guangzhou 510640, ChinaWith the increase in electricity demand, the ampacity calculation based on the dynamic thermal rating (DTR) technology is increasingly significant for assessing and improving the power transfer capacity of the existing overhead conductors. However, the DTR models now available present some inadequacies in measurement techniques related to wind speed. Therefore, it is essential to propose a new model instead of wind speed measuring in DTR technology. In this paper, the influence analysis of various weather parameters on the conductor ampacity is carried out by using the real weather data. Based on the analysis, it is confirmed that the impact of wind speed is significant, especially in the case of the low wind speed. Moreover, an equivalent heat transfer (EHT) model for DTR technology is proposed instead of wind speed measuring. For this EHT model, the calculation of conductor ampacity is realized through investigating the correlation of heat losses between the heating aluminum (Al) ball and conductor. Finally, combined with the finite element method (FEM), the EHT model proposed in this paper is verified by the Institute of Electrical and Electronic Engineers (IEEE) standard. The results indicate that the error of the EHT model is less than 6% when employing the steady thermal behavior of the Al ball to calculate the ampacity. The EHT model is useful in the real-time thermal rating of overhead conductors. It can increase the utilization of overhead conductors while also avoiding the limitation of the existing measurement techniques related to wind speed.https://www.mdpi.com/1996-1073/13/18/4679dynamic thermal ratingweather parametersoverhead conductorconductor ampacityfinite element methodheat loss
collection	DOAJ
language	English
format	Article
sources	DOAJ
author	Zhao Liu Honglei Deng Ruidong Peng Xiangyang Peng Rui Wang Wencheng Zheng Pengyu Wang Deming Guo Gang Liu
spellingShingle	Zhao Liu Honglei Deng Ruidong Peng Xiangyang Peng Rui Wang Wencheng Zheng Pengyu Wang Deming Guo Gang Liu An Equivalent Heat Transfer Model Instead of Wind Speed Measuring for Dynamic Thermal Rating of Transmission Lines Energies dynamic thermal rating weather parameters overhead conductor conductor ampacity finite element method heat loss
author_facet	Zhao Liu Honglei Deng Ruidong Peng Xiangyang Peng Rui Wang Wencheng Zheng Pengyu Wang Deming Guo Gang Liu
author_sort	Zhao Liu
title	An Equivalent Heat Transfer Model Instead of Wind Speed Measuring for Dynamic Thermal Rating of Transmission Lines
title_short	An Equivalent Heat Transfer Model Instead of Wind Speed Measuring for Dynamic Thermal Rating of Transmission Lines
title_full	An Equivalent Heat Transfer Model Instead of Wind Speed Measuring for Dynamic Thermal Rating of Transmission Lines
title_fullStr	An Equivalent Heat Transfer Model Instead of Wind Speed Measuring for Dynamic Thermal Rating of Transmission Lines
title_full_unstemmed	An Equivalent Heat Transfer Model Instead of Wind Speed Measuring for Dynamic Thermal Rating of Transmission Lines
title_sort	equivalent heat transfer model instead of wind speed measuring for dynamic thermal rating of transmission lines
publisher	MDPI AG
series	Energies
issn	1996-1073
publishDate	2020-09-01
description	With the increase in electricity demand, the ampacity calculation based on the dynamic thermal rating (DTR) technology is increasingly significant for assessing and improving the power transfer capacity of the existing overhead conductors. However, the DTR models now available present some inadequacies in measurement techniques related to wind speed. Therefore, it is essential to propose a new model instead of wind speed measuring in DTR technology. In this paper, the influence analysis of various weather parameters on the conductor ampacity is carried out by using the real weather data. Based on the analysis, it is confirmed that the impact of wind speed is significant, especially in the case of the low wind speed. Moreover, an equivalent heat transfer (EHT) model for DTR technology is proposed instead of wind speed measuring. For this EHT model, the calculation of conductor ampacity is realized through investigating the correlation of heat losses between the heating aluminum (Al) ball and conductor. Finally, combined with the finite element method (FEM), the EHT model proposed in this paper is verified by the Institute of Electrical and Electronic Engineers (IEEE) standard. The results indicate that the error of the EHT model is less than 6% when employing the steady thermal behavior of the Al ball to calculate the ampacity. The EHT model is useful in the real-time thermal rating of overhead conductors. It can increase the utilization of overhead conductors while also avoiding the limitation of the existing measurement techniques related to wind speed.
topic	dynamic thermal rating weather parameters overhead conductor conductor ampacity finite element method heat loss
url	https://www.mdpi.com/1996-1073/13/18/4679
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An Equivalent Heat Transfer Model Instead of Wind Speed Measuring for Dynamic Thermal Rating of Transmission Lines

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