刘绪光, 孙岩洲, 董克亮, 等.交直流电压下微间隙气体放电特性研究[J].河南理工大学学报（自然科学版）,2021,40(1):105-110.

LIU X G, SUN Y Z, DONG K L,,et al.Study on the characteristics of micro-gap gas discharge under AC/DC voltage[J].Journal of Henan Polytechnic University(Natural Science) ,2021,40(1):105-110.

交直流电压下微间隙气体放电特性研究

刘绪光1, 孙岩洲1, 董克亮1, 蒋智化1,2, 谢春玮3

1.河南理工大学 电气工程与自动化学院，河南 焦作 454000;2.新能源电力系统国家重点实验室，北京 102206;3.国网安徽省电力有限 公司阜阳城郊供电公司，安徽 阜阳  236000

摘要:为深入研究不同间距的电极在交直流电压作用下的放电机理，搭建基于微间隙精密距离控制的放电试验研究平台，测量不锈钢电极在1 ~ 100 μm间距下的击穿电压，绘制击穿电压曲线，并与巴申曲线进行对比，发现1 ~5 μm时与巴申曲线并不相符；随着间距增大，5 ~100 μm时击穿电压变化趋势与巴申曲线大致相同。通过计算可知，1 ~5 μm间距下的击穿场强达到108 V/m。根据测量的击穿电压曲线，估算出有效电子产额，分析其对约化电场E/p与电场倒数之间的依赖关系，发现1~5 μm间隙时，场致电子发射主要取决于高场强。最后研究不同间距与场致电子发射电流密度之间的关系，并通过F-N理论分析1 ~5 μm间隙时击穿电 压偏离巴申曲线的原因，证明场致电子发射对此起了决定作用。 

关键词:微间隙;击穿电压;约化电场;电流密度;场致电子发射

doi:10.16186/j.cnki.1673-9787.2019100028

基金项目:国家自然科学基金资助项目（U1204506）；新能源电力系统国家重点实验室资助项目（LAPS17011）

收稿日期:2019/10/11

修回日期:2019/12/16

出版日期:2021/01/15

Study on the characteristics of micro-gap gas discharge under AC/DC voltage

LIU Xuguang1, SUN Yanzhou1, DONG Keliang1, JIANG Zhihua1,2, XIE Chunwei3

1.School of Electrical Engineering and Automation， Henan Polytechnic University ，Jiaozuo  454000 ， Henan， China;2.State Key Laboratory of Alternative Electrical Power with Renewable Energy Sources， Beijing  102206 ， China;3.State Grid Anhui Fuyang Electric Power Supply Company， Fuyang  236000 ，Anhui， China

Abstract:In order to study the discharge mechanism of electrodes with different spacing under AC and DC voltage， an experimental platform based on micro-gap precise distance controller was built. The breakdown voltage of stainless steel electrodes at 1 〜100 μm was measured， and the breakdown voltage curve was drawn and compared with the Paschen curve. It was found that the breakdown voltage curve was not consistent with the Paschen curve at1 〜5 μm. With the increase of spacing， the trend of breakdown voltage at 5 〜100 μm was similar to that of Paschen curve. Through calculation， the breakdown field strength at 1 〜5 μm was 108 V/m. According to the measured breakdown voltage curve， the effective electron yield was estimated. The relationship between the reduced electric field E/p and the electric field reciprocal was analyzed. The dependence of the relationship was found that the field emission in the 1 〜5 μm was mainly determined by the high field strength. Finally， the relationship between different spacing and field emission current density was studied. The reason why the breakdown voltage deviated from the Paschen curve at l 〜5 μm gap was analyzed by F-N theory ，and it was concluded that field emission played a decisive role.

Key words:micro-gap;breakdown voltage;reduced electric field;current density;field-induced electron emission

 交直流电压下微间隙气体放电特性研究_刘绪光.pdf