Trichel脉冲放电中的模式转变实验研究  

Experimental Study of Mode Transition of Trichel Pulse Discharge

作　　者：张可心[1] 李文博[2] 张潮海[1] 

机构地区：[1]哈尔滨工业大学电气工程及自动化学院,哈尔滨150001 [2]哈尔滨工业大学能源科学与工程学院,哈尔滨150001

出　　处：《高电压技术》2016年第12期3775-3780,共6页High Voltage Engineering

基　　金：国家自然科学基金重点项目(51437002)~~

摘　　要：Trichel脉冲为一种典型的负电晕放电电流形式。为了进一步研究Trichel脉冲放电特征,针对于其放电随机性强、不利于对脉冲单体进行研究这一点,在空气中室温开放环境下,利用针-板电极结构对负电晕放电特性进行了研究,采用统计学方法对其参数—脉冲上升沿时间、半波下降时间、脉冲幅值、脉冲频率—进行概率分布分析。结果表明,在放电过程中,随着电压的上升,Trichel脉冲放电存在着模式转变的过程,模式转变发生为一个连续过程;在该实验条件下,模式转变过程始于电压值为-6.5 k V,止于电压值为8 k V时;在模式转变过程中,脉冲上升沿时间与半波下降时间几乎不变,脉冲幅值改变。脉冲幅值出现大幅度跳变为判断模式转变的一个主要依据。The Trichel pulse is a typical kind of negative corona current. To further investigate Trichel pulse discharge characteristics, considering that it is difficult to study pulse because of the discharge randomness, we used a needle-plate electrode structure to study the characteristics of Trichel pulse in air under the condition of room temperature. Using the statistical methods, we analyzed the probability distribution of parameters of Trichel pulse, including the rising time, the half-wave time, the amplitude of pulse, and the pulse frequency. The results show that, during the period of applied volt- age increasing, there is a mode transition. This transition process happens in a certain voltage region. Under the condition in this paper, the mode transition starts at the voltage of-6.5 kV, and ends at the voltage of-8 kV. In the period of mode transition process, the rising time and half-wave time is almost constant and the amplitudes of pulse will remarkably change. The change of amplitudes of pulses is the main difference between the two modes.

关 键 词：负电晕 Trichel脉冲 概率分布 脉冲幅值 模式转变 

分 类 号：X701.2[环境科学与工程—环境工程]