电网技术2024，Vol.48Issue(4)：1711-1720,中插81-中插83,13.DOI:10.13335/j.1000-3673.pst.2022.2202
考虑电压上升影响的"针-板"空气间隙直流负流注放电特性研究
DC Negative Streamer Discharge Characteristics of'Needle-plate'Air Gap Considering Influence of Voltage Rise
摘要
Abstract
The negative streamer discharge process is a highly nonlinear dynamic process with complex development.In this paper,a short air gap negative streamer discharge model is established for the'needle-plate'electrode structure and the 1cm air gap,and the rationality of the model is verified by simulation experiments.The effects of the applied voltage rise time and amplitude on the spatial electric field intensity,the charged particle concentration,the streamer development speed and the discharge current variation characteristics of the negative streamer discharge development process are analyzed.As the negative streamer develops from the'needle'electrode to the'plate'electrode,the axial electric field intensity and the electron concentration in the discharge region increase briefly and then decrease first and later increase.As the rise time of the applied voltage increases,the electric field intensity and the electron concentration of the streamer head increase nonlinearly.When the rise time of the applied voltage T=0.0 1ns increases to T=2ns,the average streamer velocity decreases by 3.38mm/ns.With the increase of the applied voltage amplitude,the electric field intensity and the electron concentration of the negative streamer head show a nonlinear upward trend.When the applied voltage amplitude increases from U0=-20kV to U0=-25kV,the average streamer velocity increases by 2.7mm/ns.关键词
"针-板"间隙/负流注/流注发展速度/放电电流/外加电压Key words
'needle-plate'gap/negative streamer/streamer velocity/discharge current/applied voltage分类
信息技术与安全科学引用本文复制引用
苏梦函,安韵竹,王清尘,沙晓,胡元潮,屈路..考虑电压上升影响的"针-板"空气间隙直流负流注放电特性研究[J].电网技术,2024,48(4):1711-1720,中插81-中插83,13.基金项目
国家自然科学基金青年基金项目(51807113) （51807113）
山东省自然科学基金面上项目(ZR2021ME092).Project Supported by the National Natural Science Foundation of China(51807113) （ZR2021ME092）
Shandong Provincial Natural Science Foundation.(ZR2021ME092). （ZR2021ME092）
