固相灭弧装置原理下多重雷击防护过程的仿真与实验研究

Simulation and Experimental Study on Multiple Lightning Protection Process Under Principle of Solid Phase Arc Extinguishing Device

国内外对多重雷击缺乏有效的应对措施,是导致雷击事故率居高不下的一个重要原因。现有的防雷规程基本都是针对单次雷击的防雷保护,缺少对多重雷击防护的考虑。文中创新性的给出了一个固相灭弧装置原理下针对多重雷击防护研究的文章,实现对多个工频建弧过程的深度抑制,并能防止重燃。通过Fluent软件仿真和实验,模拟固相灭弧装置对多重雷击的防护过程,仿真和实验结果表明:该装置对多重雷击具有良好的防护效果。在工程实践中,能大幅度的降低雷击跳闸率和事故率的发生,提高输电线路的供电可靠性。

The lack of effective countermeasures against multiple lightning strikes both at home and abroad is an important reason for the high lightning accident rate.The current lightning protection rules are basically for the protection of a single lightning strike and lack of consideration of multiple lightning protection.The article on the study of multiple lightning strikes under the principle of solid phase arc extinguishing device is innovatively given in this paper,which achieves deep suppression of multiple power frequency arc-building process and can prevent reignition.The protection process of multiple lightning strike by the solid phase arc extinguishing device is simulated through Fluent software simulation and experiment.The simulation and experimental results show that this device has a good protective effect on multiple lightning strikes.In engineering practice,it can reduce greatly the occurrence of lightning strike trip rate and accident rate as well as improve reliability of power supply of transmission lines.