高电压技术2025，Vol.51Issue(6)：2680-2690,11.DOI:10.13336/j.1003-6520.hve.20240321
用于GIS盆式绝缘子沿面耐电性能提升的电导率-温度自适应复合涂层制备方法及其性能
Preparation Method and Performance of Conductivity-temperature Adaptive Composite Coating for Improving the Surface Electrical Withstand Performance of GIS Basin Insulator
摘要
Abstract
As a key component of gas-insulated metal-enclosed switchgear(GIS),the surface electrical withstand per-formance of basin insulator is the key factor to determine the insulation margin of GIS equipment.In order to improve the surface electrical withstand performance of basin insulators,we proposed a preparation method of conductivity-tempera-ture adaptive composite coating for improving the surface electric field distribution.Meanwhile,we analyzed the com-prehensive performance of the coating under different filling ratios and the improved coating method,and studied the surface temperature distribution characteristics and surface electrical withstand performance of the research samples be-fore and after they were coated with conductivity-temperature adaptive composite coating.The results show that the surface temperature of the insulator sample decreases gradually from the guide rod to the grounding flange,and the sur-face temperature difference of the sample coated with the conductivity-temperature adaptive composite material is less than 10％compared with that of the uncoated sample.When the content of TiO2 is 30％～50％,the comprehensive proper-ties of the composites are better.Under the coupled electro-thermal field,the surface flashover voltage of basin insulator decreases gradually with the increase of surface temperature gradient.The conductivity-temperature adaptive composite materials with different components and different segments can improve the surface flashover voltage of the insulator.When the temperature of the guide rod is 40～80 ℃,the surface flashover voltage of the test sample coated with a 50％TiO2 filling composite material is increased by 17.74％～15.22％compared with that of the uncoated sample.The research results provide a reference for improving the surface electrical withstand performance of AC basin insulators.关键词
GIS/盆式绝缘子/沿面耐电性能/电导率-温度自适应复合涂层/闪络电压Key words
GIS/basin insulator/surface electrical withstand performance/conductivity-temperature adaptive composite coating/flashover voltage引用本文复制引用
葛医博,夏云峰,刘贯科,张海鹏,戴喜良,董冰冰..用于GIS盆式绝缘子沿面耐电性能提升的电导率-温度自适应复合涂层制备方法及其性能[J].高电压技术,2025,51(6):2680-2690,11.基金项目
南方电网公司科技项目(031900KK52220038(GDKJXM20220726)) （031900KK52220038(GDKJXM20220726）
中央高校基本科研业务费专项资金(JZ2023HGTB0242).Project supported by Science and Technology Project of China Southern Power Grid(031900KK52220038(GDKJXM20220726)),Fundamental Research Funds for the Central Universities(JZ2023HGTB0242). （JZ2023HGTB0242）
