Study on the influence mechanism of ambient humidity on the temperature rise of decay‐like composite insulators
Abstract At present, observing the temperature rise of composite insulators is an effective method for the detection of decay‐like defects. However, ambient humidity will affect the temperature rise of composite insulators, which will cause problems in screening the decay‐like composite insulators....
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-10-01
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| Series: | High Voltage |
| Online Access: | https://doi.org/10.1049/hve2.12170 |
| _version_ | 1797990473951870976 |
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| author | Zheng Zhong Yuan Chen Yunpeng Liu Sizu Hou Jianghai Geng |
| author_facet | Zheng Zhong Yuan Chen Yunpeng Liu Sizu Hou Jianghai Geng |
| author_sort | Zheng Zhong |
| collection | DOAJ |
| description | Abstract At present, observing the temperature rise of composite insulators is an effective method for the detection of decay‐like defects. However, ambient humidity will affect the temperature rise of composite insulators, which will cause problems in screening the decay‐like composite insulators. Therefore, it is urgent to study the temperature rise principle of decay‐like insulators and find out the influence mechanism of humidity on temperature rise. In this study, a four‐electrode system is designed to measure the surface current, volume current and interface current of the decay‐like short sample and the intact short sample under different humidity. Then the equivalent circuit models of short samples and the 500 kV full‐size decay‐like composite insulator are built to analyse the contribution rates of leakage conductance loss and polarisation loss to temperature rise. The results show that the contribution rates of the polarisation loss to the temperature rise of two samples are 35.8% and 23.6% in low humidity, while they are 98.3% and 64.4% in high humidity. For the full‐size decay‐like composite insulator, the contribution rates of polarisation loss to its temperature rise in high or low humidity are more than 99%. In addition, the proportion of polarisation loss increases at first and then decreases with the increase of the length of the decay‐like section. The conclusions of this study provide a theoretical basis for further understanding the corresponding relationship between decay‐like defects and temperature rise and improve the detection rate of decay‐like insulators. |
| first_indexed | 2024-04-11T08:35:56Z |
| format | Article |
| id | doaj.art-dd264be111124319b82200dace1cef8e |
| institution | Directory Open Access Journal |
| issn | 2397-7264 |
| language | English |
| last_indexed | 2024-04-11T08:35:56Z |
| publishDate | 2022-10-01 |
| publisher | Wiley |
| record_format | Article |
| series | High Voltage |
| spelling | doaj.art-dd264be111124319b82200dace1cef8e2022-12-22T04:34:19ZengWileyHigh Voltage2397-72642022-10-017591692410.1049/hve2.12170Study on the influence mechanism of ambient humidity on the temperature rise of decay‐like composite insulatorsZheng Zhong0Yuan Chen1Yunpeng Liu2Sizu Hou3Jianghai Geng4Hebei Key Laboratory of Power Transmission Equipment Security Defense North China Electric Power University Baoding ChinaHigh Voltage Technology Institute North China Electric Power Research Institute Beijing ChinaHebei Key Laboratory of Power Transmission Equipment Security Defense North China Electric Power University Baoding ChinaHebei Key Laboratory of Power Internet of Things Technology North China Electric Power University Baoding ChinaHebei Key Laboratory of Power Transmission Equipment Security Defense North China Electric Power University Baoding ChinaAbstract At present, observing the temperature rise of composite insulators is an effective method for the detection of decay‐like defects. However, ambient humidity will affect the temperature rise of composite insulators, which will cause problems in screening the decay‐like composite insulators. Therefore, it is urgent to study the temperature rise principle of decay‐like insulators and find out the influence mechanism of humidity on temperature rise. In this study, a four‐electrode system is designed to measure the surface current, volume current and interface current of the decay‐like short sample and the intact short sample under different humidity. Then the equivalent circuit models of short samples and the 500 kV full‐size decay‐like composite insulator are built to analyse the contribution rates of leakage conductance loss and polarisation loss to temperature rise. The results show that the contribution rates of the polarisation loss to the temperature rise of two samples are 35.8% and 23.6% in low humidity, while they are 98.3% and 64.4% in high humidity. For the full‐size decay‐like composite insulator, the contribution rates of polarisation loss to its temperature rise in high or low humidity are more than 99%. In addition, the proportion of polarisation loss increases at first and then decreases with the increase of the length of the decay‐like section. The conclusions of this study provide a theoretical basis for further understanding the corresponding relationship between decay‐like defects and temperature rise and improve the detection rate of decay‐like insulators.https://doi.org/10.1049/hve2.12170 |
| spellingShingle | Zheng Zhong Yuan Chen Yunpeng Liu Sizu Hou Jianghai Geng Study on the influence mechanism of ambient humidity on the temperature rise of decay‐like composite insulators High Voltage |
| title | Study on the influence mechanism of ambient humidity on the temperature rise of decay‐like composite insulators |
| title_full | Study on the influence mechanism of ambient humidity on the temperature rise of decay‐like composite insulators |
| title_fullStr | Study on the influence mechanism of ambient humidity on the temperature rise of decay‐like composite insulators |
| title_full_unstemmed | Study on the influence mechanism of ambient humidity on the temperature rise of decay‐like composite insulators |
| title_short | Study on the influence mechanism of ambient humidity on the temperature rise of decay‐like composite insulators |
| title_sort | study on the influence mechanism of ambient humidity on the temperature rise of decay like composite insulators |
| url | https://doi.org/10.1049/hve2.12170 |
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