低气压板-板与多针-板电极结构甲烷气体介质阻挡放电的对比

发布时间：2018-11-26 19:44

【摘要】：为深入理解低气压板板与多针板电极结构甲烷气体DBD放电特性的差异,主要设计并测量了两种电极结构的放电特性,研究了放电电气参量随气体压强变化规律,测量了两种电极结构的放电区发射光谱,诊断了两种电极结构CH双原子分子的转动温度,利用转动温度近似气体温度,得到了气体温度随气压变化的规律,并对所得到的结果进行了分析和讨论。结果表明:在等气隙条件下,两种电极结构随着气压的升高放电逐渐过渡到不稳定状态,放电半径逐渐缩小,有明显的同心圆形貌;多针-板阵列结构电极相对于板板电极结构,在电压正半周期时放电电流较大,在电压负半周时放电电流十分微弱。当气压较高时多针板阵列结构起始放电的极间电压较低;光谱计算表明在其他条件相同条件下,多针-板阵列结构的气体温度较低。
[Abstract]:In order to understand the difference of methane gas DBD discharge characteristics between low pressure plate and multi needle plate electrode structure, the discharge characteristics of two kinds of electrode structures were designed and measured, and the variation of discharge electrical parameters with gas pressure was studied. The emission spectra of two electrode structures in the discharge region were measured, and the rotational temperature of CH diatomic molecules with two electrode structures was diagnosed. The variation of gas temperature with the gas pressure was obtained by using the rotation temperature approximate to the gas temperature. The results obtained are analyzed and discussed. The results show that under the condition of equal air gap, the two electrode structures gradually transition to unstable state with the increase of air pressure, and the discharge radius decreases gradually, and the concentric circle morphology is obvious. Compared with the plate electrode structure, the multi-needle plate array electrode has a large discharge current at the positive half period of voltage, and a very weak discharge current at the negative half cycle voltage. When the pressure is high, the initial discharge voltage of the multi-pin plate array structure is lower, and the spectral calculation shows that the gas temperature of the multi-pin plate array structure is lower under the same conditions.
【作者单位】：西安交通大学电力设备电气绝缘国家重点实验室;安徽理工大学电气与信息工程学院;
【基金】：国家自然科学基金(51477135;51607003;11575003;81372076;51677146;51521065) 陕西省自然科学基础研究计划项目(2014JQ7254) 安徽省高校自然科学基金重点项目(KJ2016A194)~~
【分类号】：O461.2

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