中国电机工程学报2025，Vol.45Issue(11)：4493-4502,10.DOI:10.13334/j.0258-8013.pcsee.240351
考虑离子动力学的C4F7N放电模型及群参数研究
Study on Discharge Model and Swarm Parameters of C4F7N Considering Ion Kinetics
摘要
Abstract
This study aims to investigate the influence of complex ion kinetic processes,such as electron detachment,on the discharge characteristics of C4F7N,in order to overcome the limitations of existing electron kinetics models,considering only ionization and attachment processes under high-pressure conditions.We first conduct pulsed Townsend experiments on C4F7N under a wide range of reduced electric field and various pressure conditions.Through detailed analysis of the waveforms,a discharge model for C4F7N considering ion kinetics is established.Subsequently,we develop a theoretical model for the spatiotemporal evolution of electron avalanche in C4F7N.By combining genetic algorithms to fit current waveforms,the reaction rate coefficients of C4F7N are obtained for pressures ranging from 60 Pa to 5 kPa.Finally,a method for calculating effective ionization rate coefficients considering ion kinetics is proposed,and the insulation performance of C4F7N is reevaluated.The results show that the model incorporating ion kinetic processes can more accurately reflect the insulation characteristics of C4F7N.关键词
脉冲汤逊实验/离子动力学/电子群参数/七氟异丁腈(C4F7N)/临界击穿场强Key words
pulsed Townsend(PT)experiment/ion kinetics/swarm parameters/C4F7N/critical reduced electric field strength分类
动力与电气工程引用本文复制引用
郝迈,张博雅,刘沛琼,李兴文..考虑离子动力学的C4F7N放电模型及群参数研究[J].中国电机工程学报,2025,45(11):4493-4502,10.基金项目
国家自然科学基金项目(52277162).Project Supported by National Natural Science Foundation of China(52277162). （52277162）
