电工技术学报  2021, Vol. 36 Issue (15): 3135-3146    DOI: 10.19595/j.cnki.1000-6753.tces.201548
高电压与等离子体专题 |
不同类型电源激励下HMDSO添加比例对Ar介质阻挡放电特性的影响
张龙龙, 崔行磊, 刘峰, 方志
南京工业大学电气工程与控制科学学院南京 211816
Effect of HMDSO Addition Ratio on ArDBD CharacteristicsExcited by Different Types of Power Sources
Zhang Longlong, CuiXinglei, Liu Feng, Fang Zhi
College of Electrical Engineering and Control Science Nanjing Tech University Nanjing 211816 China
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摘要 绝缘材料表面湿闪、污闪会对电力系统安全带来隐患。利用低温等离子进行疏水改性,可降低水滴在绝缘材料表面的浸润程度,抑制其吸附污渍、粉尘,进而提高耐湿闪、污闪等沿面耐压能力。为此,可在放电气体中添加疏水反应媒质,在材料表面引入相应疏水性基团,提高其疏水性。该文在Ar大气压介质阻挡放电(DBD)中添加六甲基二硅醚(Hexamethyldisiloxane, HMDSO)作为疏水反应媒质,研究高频、微秒脉冲和纳秒脉冲电源激励下HMDSO添加比例对DBD光学和电气特性影响规律。结果表明,不同电源激励下DBD均呈现丝状放电模式,尤其纳秒脉冲DBD放电区域中出现明亮的放电细丝,添加HMDSO后,DBD均匀性得到改善。高频和微秒脉冲激励下,HMDSO的添加会导致放电电流减小,发射光谱强度降低,放电减弱,而纳秒脉冲激励下放电电流和发射光谱强度先增加后减小,在添加比例为1.5%时,放电电流和发射光谱最大,放电最强。采用等效电路模型计算相应的能量效率,高频DBD能量效率最低,约为20%;纳秒脉冲DBD能量效率最高,约为70%,HMDSO添加对DBD能量效率影响不明显。三种类型电源相比,纳秒脉冲电源激励下放电强度和能量效率最大,在合适的HMDSO添加比例下产生活性粒子的能力更强,可为疏水改性提供更加有利的条件。
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张龙龙
崔行磊
刘峰
方志
关键词 大气压介质阻挡放电高频激励脉冲激励疏水改性放电特性    
Abstract:Wet flashover and pollution flashover on the surface of insulation material will bring hidden dangers to the safety of power systems. Hydrophobic modification with low-temperature plasma can reduce the wetting of water on the surface of the insulation material, inhibit the adsorption of dirt and dust, and improve its resistance to flashover such as wet flashover and pollution flashover.To achieve this goal, hydrophobic precursor can be added to the discharge gas, and hydrophobic groups can be introduced on the surface of the material to improve the hydrophobicity. In this paper, hexamethyldisiloxane (HMDSO) is added as hydrophobic precursor in Ar dielectric barrier discharge (DBD), and influences of HMDSO addition ratio on optical and electrical discharge characteristics are studied under high frequency, microsecond pulse and nanosecond pulse power source, respectively. Results show that DBD driven by different power sources all present filamentary discharge mode, and bright discharge filaments appear driven by nanosecond pulse source. The discharge uniformity is improved due to the addition of HMDSO. Driven by high frequency and microsecond pulse power source, the addition of HMDSO causes the discharge current and the emission spectrum intensity to decrease. The discharge current and emission spectrum intensity first increase and then decrease excited by nanosecond pulse power source. When the addition ratio is 1.5%, the discharge current and emission spectrum are the largest. The equivalent circuit model is used to calculate the corresponding discharge energy efficiency. The efficiency of high frequency DBD is the lowest, about 20%, and the efficiency of nanosecond pulse DBD is the highest, about 70%. The addition of HMDSO has no obvious effect on the efficiency. Comparing three types of power sources, the nanosecond pulse power source has the largest discharge intensity and energy efficiency, and has stronger ability to generate active particles with proper HMDSO ratio, which can provide more favorable conditions for hydrophobic modification.
Key wordsAtmospheric pressure dielectric barrier discharge    high frequency excitation    pulse excitation    hydrophobic modification    discharge characteristics   
收稿日期: 2020-04-14     
PACS: TM215  
基金资助:国家自然科学基金(51977104,52037004)和江苏省六大人才高峰项目(KTHY-020)资助
通讯作者: 崔行磊 男,1983年生,副教授,硕士生导师,研究方向为高电压气体放电理论及材料表面改性应用等。E-mail:cxl00@njtech.edu.cn   
作者简介: 张龙龙 男,1993年生,硕士研究生,研究方向为低温等离子体特性诊断及其应用。E-mail:Zll163Njtc@163.com
引用本文:   
张龙龙, 崔行磊, 刘峰, 方志. 不同类型电源激励下HMDSO添加比例对Ar介质阻挡放电特性的影响[J]. 电工技术学报, 2021, 36(15): 3135-3146. Zhang Longlong, CuiXinglei, Liu Feng, Fang Zhi. Effect of HMDSO Addition Ratio on ArDBD CharacteristicsExcited by Different Types of Power Sources. Transactions of China Electrotechnical Society, 2021, 36(15): 3135-3146.
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https://dgjsxb.ces-transaction.com/CN/10.19595/j.cnki.1000-6753.tces.201548          https://dgjsxb.ces-transaction.com/CN/Y2021/V36/I15/3135