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为了解低气压环境下的电晕放电电流特性,对放电电流进行理论研究和仿真计算,并建立了由气压泵、气压计、密闭气罐、高压静电源、动态电位测试仪等组成的低气压电晕放电模拟试验系统。利用针-板电极结构模型,进行了低气压环境下的针-板电晕放电试验,并结合气体放电理论,从微观粒子运动方面对试验结果进行分析。研究结果表明:随着气压的降低,放电电流脉冲上升沿时间和电流脉冲重复频率逐渐增大,但下降沿和脉冲持续时间基本不变。
In order to understand the characteristics of corona discharge current in low pressure environment, the discharge current is theoretically studied and simulated. The gas pressure pump, barometer, sealed gas tank, high voltage electrostatic source, dynamic potential tester Corona discharge simulation test system. The needle-plate corona discharge test under low pressure was carried out by using the needle-plate electrode model, and the experimental results were analyzed from the microscopic particle motion with gas discharge theory. The results show that with the decrease of pressure, the rising time of pulse current and the repetition frequency of current pulse increase gradually, but the falling edge and pulse duration are basically unchanged.