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...
Main Authors: | , , , , , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
MDPI AG
2020-09-01
|
Series: | Energies |
Subjects: | |
Online Access: | https://www.mdpi.com/1996-1073/13/18/4679 |
id |
doaj-2eb4c822238445b1b4ff4a698a40d4f4 |
---|---|
record_format |
Article |
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 |
work_keys_str_mv |
AT zhaoliu anequivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT hongleideng anequivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT ruidongpeng anequivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT xiangyangpeng anequivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT ruiwang anequivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT wenchengzheng anequivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT pengyuwang anequivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT demingguo anequivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT gangliu anequivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT zhaoliu equivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT hongleideng equivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT ruidongpeng equivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT xiangyangpeng equivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT ruiwang equivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT wenchengzheng equivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT pengyuwang equivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT demingguo equivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines AT gangliu equivalentheattransfermodelinsteadofwindspeedmeasuringfordynamicthermalratingoftransmissionlines |
_version_ |
1724503313283547136 |