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为研究直流电压下气体绝缘开关装置(GIS)内金属微粒处于不同运动状态时的超声波特性,以及基于微粒超声波特性判别运动状态的方法,建立了一套超声波测量系统,设计了GIS内部金属导电微粒的运动状态模型,分别是滚动、非贯穿性跳动和贯穿性跳动.采用该测量系统拾取了在直流电压下微粒运动产生的超声波脉冲信号,并在大量试验数据基础上,提出了基于超声波时间序列(相邻两次超声波脉冲关联)区分微粒运动状态的方法.为进一步量化分析,建立了超声波特征参数(相邻两次脉冲幅值之差一相邻脉冲发生时间间隔,即△u-△t).试验结果分析表明,依据统计分布图谱.可区分金属微粒运动的状态.“,”To research the ultrasonic characteristics of the metallic particles placed on different states in GIS (gas in-sulated switchgear) and the method based on ultrasonic characteristics that recognizes the motion states of the parti-cle, the ultrasonic measurement system is constructed in this paper based on the ultrasonic sensor.Three models on the motion states of metallic particle are designed in this test, which are the rolling, the penetrative jump, and the non-penetrative jump.A great deal of ultrasonic pulses generated by the motion particles under dc voltage are ac-quired using this system mentioned in this paper.Based on much experimental data, a method that recognized the particle states is proposed based on ultrasonic time sequences (the interdependence between ultrasonic pulses).To analyze quantitatively, furthermore, ultrasonic characteristic parameter △u-△t map (magnitude difference △u be-tween adjacent pulses, time difference between ultrasonic pulses △t) is also put forward in this paper.The results show that statistical maps can be used to recognize the motion states of metallic particle.