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首页> 外文会议>International Conference on Electric Power Equipment - Switching Technology >Study on the laser-induced plasma properties of vacuum interrupter shield under different pressure
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Study on the laser-induced plasma properties of vacuum interrupter shield under different pressure

机译：不同压力下真空灭弧室罩的激光诱导等离子体性能研究

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Vacuum degree online detection of vacuum interrupter has been investigated for more than 50 years. But, there is still no perferable means can be used to practical application. The change rules of Cu, H spectral lines intensities with pressure have been investigated in this paper. Further, the laser-induced plasma temperature and density are calculated using Boltzmann slope method and Stark broadening of Cu and H, respectively. Research results indicate that the H spectral line intensity increase with pressure from 0.001Pa to 1atm monotonically, which can be taken as characteristic signals of vacuum degree. In addition, the plasma temperature increase from ~6500K to ~12500K then decreased to ~8000K. The plasma density increase from 1.8 × 1017cm-3 to 5.6 × 1017cm-3 monotonically when vacuum degree change from 0.001Pa to 100000Pa, which can be used as a supplementary measurement and verification of spectral lines intensities. A new vacuum degree online detection method is proposed in this paper which can overcome the poor electromagnetic interference ability, low limit of detection and hard to realize online detection of tradition methods. This method is significant to vacuum degree online detection of vacuum interrupter.
机译：真空灭弧室的真空度在线检测已经进行了50多年的研究。但是，仍然没有任何可用于实际应用的手段。研究了Cu，H谱线强度随压力的变化规律。此外，分别使用玻尔兹曼斜率法和Cu和H的Stark展宽来计算激光诱导的等离子体温度和密度。研究结果表明，H谱线强度随压力从0.001Pa到1atm单调增加，可作为真空度的特征信号。此外，等离子温度从〜6500K升高到〜12500K，然后降低到〜8000K。血浆密度从1.8×10 17 cm -3 增加到5.6×10 17 cm -3 真空度从0.001Pa到100000Pa的变化，可以用作光谱线强度的补充测量和验证。提出了一种新的真空度在线检测方法，该方法克服了传统方法的电磁干扰能力差，检测下限低，难以实现在线检测的缺点。该方法对真空灭弧室的真空度在线检测具有重要意义。

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