高压电器2023，Vol.59Issue(12)：195-200,6.DOI:10.13296/j.1001-1609.hva.2023.12.023
绝缘子表面氟化对金属颗粒的活性抑制
Inhibition of Metal Particle Activity by Fluorination on the Surface of Insulators
摘要
Abstract
The discharge of foreign matter is the main cause of insulation breakdown in the operation of GIS/GIL equipment.For improving the initial voltage of internal foreign matter during operation of the equipment,a study on the improvement of insulation performance under foreign matter by fluorination on the surface of insulator surface to improve insulation performance under foreign matter is developed.The direct fluorination treatment system for insula-tors and a 220 kV GIS real test system are set up and the DC withstand performance tests under such conditions as no foreign matter defects inside the equipment,foreign matter adsorption defects on the surface of insulators and free for-eign matter defects on the surface of the enclosure before and after fluorination of 126 kV insulator surface is devel-oped.It is found that at 0.2 MPa SF6 gas environment,the average flashover voltage of fluorinated insulators is in-creased by 13.5%compared to unfluorinated insulators,the average flashover voltage of foreign matter adsorption on the surface of fluorinated insulators is increased by 21.5%compared to unfluorinated insulators,and the minimum flashover voltage of free metal foreign matter inside the enclosure under 126 kV fluorinated insulators is increased by 18.6%compared to unfluorinated insulators.The corresponding test results can provide support for the suppression of foreign matter activity inside GIS/GIL.关键词
GIS/金属颗粒/绝缘子/表面氟化/绝缘性能Key words
GIS/metal particle/insulator/surface fluorination/insulation performance引用本文复制引用
牛勃,马飞越,相中华,安振连,刘绪光,王晓康..绝缘子表面氟化对金属颗粒的活性抑制[J].高压电器,2023,59(12):195-200,6.基金项目
国家自然科学基金(52177024) （52177024）
宁夏自然科学基金(2021AAC03494) （2021AAC03494）
国网宁夏电力有限公司科技项目(5229DK200057).Project Supported by National Natural Science Foundation of China(52177024),Natural Science Foundation of Ningxia(2021AAC03494),Science and Technology Project of State Grid Ningxia Electric Power Co.,Ltd.(5229DK200057). （5229DK200057）
