全国高电压与放电等离子体学术会议专题引言

放电等离子体在材料处理、点火助燃、环境保护、生物医学等领域具有广阔的应用前景,但由于其内部过程及与材料相互作用非常复杂,研究工作面临诸多挑战。为了促进放电等离子体在我国电工学科的发展,中国电工技术学会于2016年4月20日正式批复成立了中国电工技术学会等离子体及应用专业委员会(以下简称“专委会”)。专委会立足放电等离子体技术,与高电压绝缘技术、脉冲功率技术等电工技术进行交叉融合,强调低温放电等离子体技术的研究与应用。随后,专委会于2016年11月26—27日在北京组织召开了全国高电压与放电等离子体学术会议,参加会议的有来自全国110多家高校、科研院所以及企业界的431名代表,共收到投稿摘要281篇、中英文全文论文132篇。此次专题邀请西安交通大学刘定新副教授和东北电力大学蔡新景副教授担任客座编辑,通过客座编辑在组稿、送审方面的辛勤工作,有22篇论文经严格的同行评议后推荐至《高电压技术》发表。

《高电压技术》一直关注放电等离子体技术的研究, 在该领域刊发了大量的论文, 并多次组织相关专题。本期“全国高电压与放电等离子体学术会议”专题共发表14篇论文, 另外8篇论文将于后续发表。通过这些论文的发表, 希望进一步提升电工学科研究人员对放电等离子体的认识与关注, 促进该领域研究的发展。本专题论文的主要内容包括:

(1)等离子体源的研究,包括:空军工程大学宋慧敏等研究了三电极合成射流激励器电极布局与电源系统的匹配特性,发现触发电源脉冲电压的上升速度对触发特性有重要的影响,据此提出了相应的设计准则并优化了电极的布局;嘉应学院冯发达等提出了一种适用于等离子体与催化相结合的反电晕等离子体发生器,实现一种新的等离子体催化方式;上海理工大学饶俊峰等设计了一种带截尾开关的高频纳秒脉冲功率源,可实现上千伏的重频脉冲放电。

(2)等离子体特性的仿真研究,包括:华南理工大学戴栋等仿真了不同外施电压频率下大气压冷等子体的时域非线性行为,确定了正柱区消散速率与等离子体动力学状态的定量关系;清华大学陈坚等建立了描述金属等离子体离子引出的一维流体模型,系统研究了不同工况下等离子体鞘层的时空演化特性,确定了离子引出时间和引出效率;华南理工大学宁文军等仿真了短间隙介质阻挡放电,发现了非线性现象的出现和演化可能是电子−离子参数失调的结果。

(3)等离子体特性的实验研究,包括:南京工业大学方志等研究了在氩气中添加六甲基二硅醚(HMDSO)对等离子体特性的影响,发现Si谱线在HMDSO体积分数为0.02%时出现极大值,因此工作于该气体组分有利于提高被处理材料的憎水性;大连理工大学李杰等发现在低压电极覆多孔绝缘材料能有效提高等离子体强度,进而有助于甲苯降解;西安交通大学姚聪伟等研究了电源频率对平板型介质阻挡放电特性的影响,发现增加频率有助于提高等离子体的均匀性,但会导致倍周期等非线性行为;西安交通大学李平等研究了多种放电结构下甲烷气体中的介质阻挡放电特性,发现针板结构比平板结构起始放电电压低,且气体温度更低。

(4)等离子体应用研究,包括:装备学院聂万胜等关于纳秒脉冲等离子体助燃技术综述,内容主要覆盖了助燃原理、实验与应用研究、诊断与仿真技术三个方面,指出了研究面临的挑战和未来发展的方向;中国科学院电工研究所王瑞雪等优化了绝缘材料表面电荷测量方法,并研究了等离子体处理对材料表面电特性的影响;大连海事大学徐书婧等研究了强电场放电协同水力空化过程中的气液传质,证实水力空化显著影响活性氧向水中的传质效率;大连海事大学田一平等研究了基于微流注与微辉光的强电离放电等离子体快速灭菌处理饮用水的技术,发现强电离放电协同水力空化可高效产生液相活性氧,并获得了应用该技术应急处理不同水质水源水的灭菌效果和水质改善情况。

值此专题出版之际,衷心感谢各位专家、学者对2016全国高电压与放电等离子体学术会议的关注,感谢大会主席和编辑出版主席对专题的指导和帮助,感谢各位作者的踊跃投稿以及各位审稿专家的严格评审;特别感谢《高电压技术》期刊编辑部的大力支持及各位编辑的热情付出。

中国电工技术学会等离子体及应用专业委员会

2017年5月15日

Introduction to the Special Issue of the National Conference on High Voltage & Discharge Plasmas

Discharge plasmas have a wide application prospect in material processing, combustion, environmental protection, biomedicine and so on. However, the complexity of plasma itself and its interaction with materials leads to a big challenge for the researches. In order to promote the development of discharge plasma in the electrical engineering disciplines of China, the Plasmas and their Applications Committee in the China Electrotechnical Society was formally approved and set up on April 20, 2016 . Subsequently, the committee organized a National Conference on High Voltage & Dishcarge Plasmas in November 26-27 the same year in Beijing. More than 431 people participated in the conference who were from more than 110 universities, research institutes and business community. The conference received a total of 281 abstracts and 132 full papers. Thanks to the effort made by the two guest editors, associate professor Dingxin Liu with Xi’an Jiaotong University and associate professor Xinjing Cai with Northeast Electric Power University, in soliciting papers and managing their peer review, 22 papers were recommended to be published in High Voltage Engineering after a strict peer review.

High Voltage Engineering has always been concerned with the research on discharge plasma, has published a large number of papers in this field, and has organized a number of related special issues. This issue of National Conference on High Voltage & Discharge Plasma topic published a total of 14 papers, and the other eight papers will be published later. Through the publication of these papers, we hope to further promote the awareness and attention on discharge plasmas among the researchers in the field of electrical engineering, and also the research and development in discharge plasmas as well. The main contents of this issue includes:

(1) Development of plasma sources. Huimin Song, from Air Force Engineering University, studied the arrangement of a three-electrode actuator and its matching characteristics with different power supply, and it is suggested that the rise speed of trigger voltage has important influences on the trigger characteristics. Fada Feng, from Jiaying University, proposed a novel back corona discharge source which is suitable for the combination of plasma and catalysis. Junfeng Rao, from the University of Shanghai for Science and Technology, designed a high-repetition pulse power source based on avalanche transistor, which can realize an output of high-repetition nanosecond pulse with a peak voltage of 1 kV.

(2) Numerical study on plasma characteristics. Dong Dai, from South China University of Technology, studied the effects of voltage and frequency on the time evolution of nonlinear phenomenon of dielectric barrier discharge by a 1-D fluid model, and then determined the quantitative relationship between the dissipation rate of positive column and the dynamic state of the plasma. Jian Chen, From Tsinghua University, developed a 1-D fluid model to describe the motions of each component in a metal ion extraction process, from which the ion extraction time and efficiency under different operating conditions were given. Wenjun Ning, from South China University of Technology, simulated the short-gap dielectric barrier discharge, and found that the appearance and evolution of nonlinear phenomenon is probably due to the mismatch between the generation and quenching of electron and ions.

(3) Experimental study on plasma characteristics. Zhi Fang, from Nanjing Tech University, studied the influence of HMDSO admixture on the discharge characteristics of an argon plasma jet array, and found that the spectral intensity of Si maximized when the concentration of HMDSO is 0.02%. Jie Li, from Dalian University of Technology, found that the porous insulating material attached to the low-voltage electrode would enhance the plasma intensity in a line-plate discharge device. Congwei Yao, from Xi’an Jiaotong University, studied the effect of voltage frequency on the plane-to-plane dielectric barrier discharge, and found that the increase of frequency would enhance the plasma homogeneity but also lead to nonlinearity. Ping Li, from Xi’an Jiaotong University, studied the dielectric barrier discharge in CH4 with different electrode configurations, and found that the needle-to-plane configuration is better than the plane-to-plane one to meet the application requirements.

(4) Applied research of plasmas. Wansheng Nie, from Equipment Academy, reviewed the plasma assisted combustion by nanosecond pulsed discharge, including the content of combustion enhancing theory, experimental and application studies, and diagnostics and simulation technologies, and finally pointed out the challenges and prospects of the research in this field. Ruixue Wang, from Institute of Electrical Engineering of Chinese Academy of Science, optimized the measuring method for the surface charge on dielectric materials, and studied the change of electrical characteristics of the material surface after plasma treatment. Shuliang Xu, from Dalian Maritime University, studied the heterogeneous mass transfer with the technology of the combination of high electric field discharge and hydraulic cavitation, and demonstrated that the hydraulic cavitation had remarkable influences on the mass transfer efficiency of reactive oxygen species. Yiping Tian, from Dalian Maritime University, developed a rapid disinfection technology for drinking water based on the combination of micro-streamer and micro-glow discharges, and evaluated the inactivation efficiency and the changes of general water-quality after the emergency treatment for the water with different original qualities.

On the occasion of this special issue, we would like to thank all the experts and scholars for their concern to the 2016 National Conference on High Voltage & Discharge Plasmas, the chairman and associate chairman of the conference for their guidance and help on this special issue, and the authors and reviewers for their great contribution. We specially appreciate the editors of High Voltage Engineering for their strong support and enthusiastic assistance during the whole process of this publication.

Plasmas and Their Applications Committee of China Electrotechnical Society

May 15, 2017

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