External Insulation Performance under DC Voltages of Polluted Post Insulators for Power Stations in Rainy Weather: A Brief Review and Recent Progress.
Saved in:
| Title: | External Insulation Performance under DC Voltages of Polluted Post Insulators for Power Stations in Rainy Weather: A Brief Review and Recent Progress. |
|---|---|
| Authors: | Dong, Yuxi1 (AUTHOR) 2004230006@mail.cugb.edu.cn, Wang, Zili1 (AUTHOR) 2104230071@mail.cugb.edu.cn, Diao, Mingguang1 (AUTHOR) dmg@cugb.edu.cn, Wang, Xi2 (AUTHOR) wangxi@epri.sgcc.com.cn, Deng, Yu2 (AUTHOR) dmg@cugb.edu.cn, Cao, Bin3 (AUTHOR) huhu0521@126.com, Xu, Ying4 (AUTHOR) xuying@chinasperi.sgcc.com.cn, Zhang, Chuyan1 (AUTHOR) dmg@cugb.edu.cn |
| Source: | Energies (19961073). Aug2024, Vol. 17 Issue 16, p4137. 16p. |
| Subjects: | Flashover, Electric power distribution grids, Meteorological stations, Raindrops, Pollution |
| Abstract: | The discharge and flashover phenomenon of post insulators in rainy weather has not been given sufficient consideration; however, with the construction of ultra-high voltage power grids, the performance of the external insulation and the ability to withstand special climate conditions need to be guaranteed. Therefore, it is meaningful to conduct studies on the discharge characteristics of contaminated post insulators under rainfall conditions. Moreover, the conventional perception tends to confuse the flashover of polluted insulators in the rain with the pollution flashover that occurs in the fog; however, in fact, the discharge of contaminated insulators that occurs during rainfall has characteristics that can be distinguished from the pollution flashover. In this study, firstly, the current status of research on the external insulation characteristics of post insulators was analyzed through an examination of the available literature. Secondly, the concept of a 'pollution rain flashover' of insulators was established and clarified, to distinguish it from the traditional meaning of 'pollution flashover' or 'contamination flashover'. Thirdly, research results on the pollution rain flashover of post insulators used in power stations in recent years were summarized, which included the characteristics and mechanism of the discharge, parameters and factors influencing the flashover voltage, and their influence laws. Particularly, the gap discharge between insulator sheds triggered by raindrops, which is the most significant feature of the pollution rain flashover, and the profile optimization of sheds, which is an effective way to improve the performance, were emphasized in this work. Fourthly, the prevention methods were studied, which mainly include the application of rainproof sheds and the shed optimization for pollution rain flashover of post insulators. Finally, a brief prospect is given for future research. [ABSTRACT FROM AUTHOR] |
| Copyright of Energies (19961073) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| Abstract: | The discharge and flashover phenomenon of post insulators in rainy weather has not been given sufficient consideration; however, with the construction of ultra-high voltage power grids, the performance of the external insulation and the ability to withstand special climate conditions need to be guaranteed. Therefore, it is meaningful to conduct studies on the discharge characteristics of contaminated post insulators under rainfall conditions. Moreover, the conventional perception tends to confuse the flashover of polluted insulators in the rain with the pollution flashover that occurs in the fog; however, in fact, the discharge of contaminated insulators that occurs during rainfall has characteristics that can be distinguished from the pollution flashover. In this study, firstly, the current status of research on the external insulation characteristics of post insulators was analyzed through an examination of the available literature. Secondly, the concept of a 'pollution rain flashover' of insulators was established and clarified, to distinguish it from the traditional meaning of 'pollution flashover' or 'contamination flashover'. Thirdly, research results on the pollution rain flashover of post insulators used in power stations in recent years were summarized, which included the characteristics and mechanism of the discharge, parameters and factors influencing the flashover voltage, and their influence laws. Particularly, the gap discharge between insulator sheds triggered by raindrops, which is the most significant feature of the pollution rain flashover, and the profile optimization of sheds, which is an effective way to improve the performance, were emphasized in this work. Fourthly, the prevention methods were studied, which mainly include the application of rainproof sheds and the shed optimization for pollution rain flashover of post insulators. Finally, a brief prospect is given for future research. [ABSTRACT FROM AUTHOR] |
|---|---|
| ISSN: | 19961073 |
| DOI: | 10.3390/en17164137 |
